scsi: ufs: Split the drivers/scsi/ufs directory

Split the drivers/scsi/ufs directory into 'core' and 'host' directories
under the drivers/ufs/ directory. Move shared header files into the
include/ufs/ directory. This separation makes it clear which header files
UFS drivers are allowed to include (include/ufs/*.h) and which header files
UFS drivers are not allowed to include (drivers/ufs/core/*.h).

Update the MAINTAINERS file. Add myself as a UFS reviewer.

Link: https://lore.kernel.org/r/20220511212552.655341-1-bvanassche@acm.org
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Avri Altman <avri.altman@wdc.com>
Cc: Bean Huo <beanhuo@micron.com>
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: Keoseong Park <keosung.park@samsung.com>
Tested-by: Bean Huo <beanhuo@micron.com>
Tested-by: Adrian Hunter <adrian.hunter@intel.com>
Reviewed-by: Bean Huo <beanhuo@micron.com>
Acked-by: Avri Altman <avri.altman@wdc.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

1 files changed, 0 insertions, 9944 deletions

diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
deleted file mode 100644
index 1fb3a8b9b03e..000000000000
--- a/drivers/scsi/ufs/ufshcd.c
+++ /dev/null
@@ -1,9944 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * Universal Flash Storage Host controller driver Core
- * Copyright (C) 2011-2013 Samsung India Software Operations
- * Copyright (c) 2013-2016, The Linux Foundation. All rights reserved.
- *
- * Authors:
- *	Santosh Yaraganavi <santosh.sy@samsung.com>
- *	Vinayak Holikatti <h.vinayak@samsung.com>
- */
-
-#include <linux/async.h>
-#include <linux/devfreq.h>
-#include <linux/nls.h>
-#include <linux/of.h>
-#include <linux/bitfield.h>
-#include <linux/blk-pm.h>
-#include <linux/blkdev.h>
-#include <linux/clk.h>
-#include <linux/delay.h>
-#include <linux/interrupt.h>
-#include <linux/module.h>
-#include <linux/regulator/consumer.h>
-#include <scsi/scsi_cmnd.h>
-#include <scsi/scsi_dbg.h>
-#include <scsi/scsi_driver.h>
-#include <scsi/scsi_eh.h>
-#include "ufshcd-priv.h"
-#include "ufs_quirks.h"
-#include "unipro.h"
-#include "ufs-sysfs.h"
-#include "ufs-debugfs.h"
-#include "ufs-fault-injection.h"
-#include "ufs_bsg.h"
-#include "ufshcd-crypto.h"
-#include "ufshpb.h"
-#include <asm/unaligned.h>
-
-#define CREATE_TRACE_POINTS
-#include <trace/events/ufs.h>
-
-#define UFSHCD_ENABLE_INTRS	(UTP_TRANSFER_REQ_COMPL |\
-				 UTP_TASK_REQ_COMPL |\
-				 UFSHCD_ERROR_MASK)
-/* UIC command timeout, unit: ms */
-#define UIC_CMD_TIMEOUT	500
-
-/* NOP OUT retries waiting for NOP IN response */
-#define NOP_OUT_RETRIES    10
-/* Timeout after 50 msecs if NOP OUT hangs without response */
-#define NOP_OUT_TIMEOUT    50 /* msecs */
-
-/* Query request retries */
-#define QUERY_REQ_RETRIES 3
-/* Query request timeout */
-#define QUERY_REQ_TIMEOUT 1500 /* 1.5 seconds */
-
-/* Task management command timeout */
-#define TM_CMD_TIMEOUT	100 /* msecs */
-
-/* maximum number of retries for a general UIC command  */
-#define UFS_UIC_COMMAND_RETRIES 3
-
-/* maximum number of link-startup retries */
-#define DME_LINKSTARTUP_RETRIES 3
-
-/* Maximum retries for Hibern8 enter */
-#define UIC_HIBERN8_ENTER_RETRIES 3
-
-/* maximum number of reset retries before giving up */
-#define MAX_HOST_RESET_RETRIES 5
-
-/* Maximum number of error handler retries before giving up */
-#define MAX_ERR_HANDLER_RETRIES 5
-
-/* Expose the flag value from utp_upiu_query.value */
-#define MASK_QUERY_UPIU_FLAG_LOC 0xFF
-
-/* Interrupt aggregation default timeout, unit: 40us */
-#define INT_AGGR_DEF_TO	0x02
-
-/* default delay of autosuspend: 2000 ms */
-#define RPM_AUTOSUSPEND_DELAY_MS 2000
-
-/* Default delay of RPM device flush delayed work */
-#define RPM_DEV_FLUSH_RECHECK_WORK_DELAY_MS 5000
-
-/* Default value of wait time before gating device ref clock */
-#define UFSHCD_REF_CLK_GATING_WAIT_US 0xFF /* microsecs */
-
-/* Polling time to wait for fDeviceInit */
-#define FDEVICEINIT_COMPL_TIMEOUT 1500 /* millisecs */
-
-#define ufshcd_toggle_vreg(_dev, _vreg, _on)				\
-	({                                                              \
-		int _ret;                                               \
-		if (_on)                                                \
-			_ret = ufshcd_enable_vreg(_dev, _vreg);         \
-		else                                                    \
-			_ret = ufshcd_disable_vreg(_dev, _vreg);        \
-		_ret;                                                   \
-	})
-
-#define ufshcd_hex_dump(prefix_str, buf, len) do {                       \
-	size_t __len = (len);                                            \
-	print_hex_dump(KERN_ERR, prefix_str,                             \
-		       __len > 4 ? DUMP_PREFIX_OFFSET : DUMP_PREFIX_NONE,\
-		       16, 4, buf, __len, false);                        \
-} while (0)
-
-int ufshcd_dump_regs(struct ufs_hba *hba, size_t offset, size_t len,
-		     const char *prefix)
-{
-	u32 *regs;
-	size_t pos;
-
-	if (offset % 4 != 0 || len % 4 != 0) /* keep readl happy */
-		return -EINVAL;
-
-	regs = kzalloc(len, GFP_ATOMIC);
-	if (!regs)
-		return -ENOMEM;
-
-	for (pos = 0; pos < len; pos += 4) {
-		if (offset == 0 &&
-		    pos >= REG_UIC_ERROR_CODE_PHY_ADAPTER_LAYER &&
-		    pos <= REG_UIC_ERROR_CODE_DME)
-			continue;
-		regs[pos / 4] = ufshcd_readl(hba, offset + pos);
-	}
-
-	ufshcd_hex_dump(prefix, regs, len);
-	kfree(regs);
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(ufshcd_dump_regs);
-
-enum {
-	UFSHCD_MAX_CHANNEL	= 0,
-	UFSHCD_MAX_ID		= 1,
-	UFSHCD_NUM_RESERVED	= 1,
-	UFSHCD_CMD_PER_LUN	= 32 - UFSHCD_NUM_RESERVED,
-	UFSHCD_CAN_QUEUE	= 32 - UFSHCD_NUM_RESERVED,
-};
-
-static const char *const ufshcd_state_name[] = {
-	[UFSHCD_STATE_RESET]			= "reset",
-	[UFSHCD_STATE_OPERATIONAL]		= "operational",
-	[UFSHCD_STATE_ERROR]			= "error",
-	[UFSHCD_STATE_EH_SCHEDULED_FATAL]	= "eh_fatal",
-	[UFSHCD_STATE_EH_SCHEDULED_NON_FATAL]	= "eh_non_fatal",
-};
-
-/* UFSHCD error handling flags */
-enum {
-	UFSHCD_EH_IN_PROGRESS = (1 << 0),
-};
-
-/* UFSHCD UIC layer error flags */
-enum {
-	UFSHCD_UIC_DL_PA_INIT_ERROR = (1 << 0), /* Data link layer error */
-	UFSHCD_UIC_DL_NAC_RECEIVED_ERROR = (1 << 1), /* Data link layer error */
-	UFSHCD_UIC_DL_TCx_REPLAY_ERROR = (1 << 2), /* Data link layer error */
-	UFSHCD_UIC_NL_ERROR = (1 << 3), /* Network layer error */
-	UFSHCD_UIC_TL_ERROR = (1 << 4), /* Transport Layer error */
-	UFSHCD_UIC_DME_ERROR = (1 << 5), /* DME error */
-	UFSHCD_UIC_PA_GENERIC_ERROR = (1 << 6), /* Generic PA error */
-};
-
-#define ufshcd_set_eh_in_progress(h) \
-	((h)->eh_flags |= UFSHCD_EH_IN_PROGRESS)
-#define ufshcd_eh_in_progress(h) \
-	((h)->eh_flags & UFSHCD_EH_IN_PROGRESS)
-#define ufshcd_clear_eh_in_progress(h) \
-	((h)->eh_flags &= ~UFSHCD_EH_IN_PROGRESS)
-
-struct ufs_pm_lvl_states ufs_pm_lvl_states[] = {
-	[UFS_PM_LVL_0] = {UFS_ACTIVE_PWR_MODE, UIC_LINK_ACTIVE_STATE},
-	[UFS_PM_LVL_1] = {UFS_ACTIVE_PWR_MODE, UIC_LINK_HIBERN8_STATE},
-	[UFS_PM_LVL_2] = {UFS_SLEEP_PWR_MODE, UIC_LINK_ACTIVE_STATE},
-	[UFS_PM_LVL_3] = {UFS_SLEEP_PWR_MODE, UIC_LINK_HIBERN8_STATE},
-	[UFS_PM_LVL_4] = {UFS_POWERDOWN_PWR_MODE, UIC_LINK_HIBERN8_STATE},
-	[UFS_PM_LVL_5] = {UFS_POWERDOWN_PWR_MODE, UIC_LINK_OFF_STATE},
-	/*
-	 * For DeepSleep, the link is first put in hibern8 and then off.
-	 * Leaving the link in hibern8 is not supported.
-	 */
-	[UFS_PM_LVL_6] = {UFS_DEEPSLEEP_PWR_MODE, UIC_LINK_OFF_STATE},
-};
-
-static inline enum ufs_dev_pwr_mode
-ufs_get_pm_lvl_to_dev_pwr_mode(enum ufs_pm_level lvl)
-{
-	return ufs_pm_lvl_states[lvl].dev_state;
-}
-
-static inline enum uic_link_state
-ufs_get_pm_lvl_to_link_pwr_state(enum ufs_pm_level lvl)
-{
-	return ufs_pm_lvl_states[lvl].link_state;
-}
-
-static inline enum ufs_pm_level
-ufs_get_desired_pm_lvl_for_dev_link_state(enum ufs_dev_pwr_mode dev_state,
-					enum uic_link_state link_state)
-{
-	enum ufs_pm_level lvl;
-
-	for (lvl = UFS_PM_LVL_0; lvl < UFS_PM_LVL_MAX; lvl++) {
-		if ((ufs_pm_lvl_states[lvl].dev_state == dev_state) &&
-			(ufs_pm_lvl_states[lvl].link_state == link_state))
-			return lvl;
-	}
-
-	/* if no match found, return the level 0 */
-	return UFS_PM_LVL_0;
-}
-
-static const struct ufs_dev_quirk ufs_fixups[] = {
-	/* UFS cards deviations table */
-	{ .wmanufacturerid = UFS_VENDOR_MICRON,
-	  .model = UFS_ANY_MODEL,
-	  .quirk = UFS_DEVICE_QUIRK_DELAY_BEFORE_LPM |
-		   UFS_DEVICE_QUIRK_SWAP_L2P_ENTRY_FOR_HPB_READ },
-	{ .wmanufacturerid = UFS_VENDOR_SAMSUNG,
-	  .model = UFS_ANY_MODEL,
-	  .quirk = UFS_DEVICE_QUIRK_DELAY_BEFORE_LPM |
-		   UFS_DEVICE_QUIRK_HOST_PA_TACTIVATE |
-		   UFS_DEVICE_QUIRK_RECOVERY_FROM_DL_NAC_ERRORS },
-	{ .wmanufacturerid = UFS_VENDOR_SKHYNIX,
-	  .model = UFS_ANY_MODEL,
-	  .quirk = UFS_DEVICE_QUIRK_HOST_PA_SAVECONFIGTIME },
-	{ .wmanufacturerid = UFS_VENDOR_SKHYNIX,
-	  .model = "hB8aL1" /*H28U62301AMR*/,
-	  .quirk = UFS_DEVICE_QUIRK_HOST_VS_DEBUGSAVECONFIGTIME },
-	{ .wmanufacturerid = UFS_VENDOR_TOSHIBA,
-	  .model = UFS_ANY_MODEL,
-	  .quirk = UFS_DEVICE_QUIRK_DELAY_BEFORE_LPM },
-	{ .wmanufacturerid = UFS_VENDOR_TOSHIBA,
-	  .model = "THGLF2G9C8KBADG",
-	  .quirk = UFS_DEVICE_QUIRK_PA_TACTIVATE },
-	{ .wmanufacturerid = UFS_VENDOR_TOSHIBA,
-	  .model = "THGLF2G9D8KBADG",
-	  .quirk = UFS_DEVICE_QUIRK_PA_TACTIVATE },
-	{}
-};
-
-static irqreturn_t ufshcd_tmc_handler(struct ufs_hba *hba);
-static void ufshcd_async_scan(void *data, async_cookie_t cookie);
-static int ufshcd_reset_and_restore(struct ufs_hba *hba);
-static int ufshcd_eh_host_reset_handler(struct scsi_cmnd *cmd);
-static int ufshcd_clear_tm_cmd(struct ufs_hba *hba, int tag);
-static void ufshcd_hba_exit(struct ufs_hba *hba);
-static int ufshcd_probe_hba(struct ufs_hba *hba, bool init_dev_params);
-static int ufshcd_setup_clocks(struct ufs_hba *hba, bool on);
-static inline void ufshcd_add_delay_before_dme_cmd(struct ufs_hba *hba);
-static int ufshcd_host_reset_and_restore(struct ufs_hba *hba);
-static void ufshcd_resume_clkscaling(struct ufs_hba *hba);
-static void ufshcd_suspend_clkscaling(struct ufs_hba *hba);
-static void __ufshcd_suspend_clkscaling(struct ufs_hba *hba);
-static int ufshcd_scale_clks(struct ufs_hba *hba, bool scale_up);
-static irqreturn_t ufshcd_intr(int irq, void *__hba);
-static int ufshcd_change_power_mode(struct ufs_hba *hba,
-			     struct ufs_pa_layer_attr *pwr_mode);
-static int ufshcd_setup_hba_vreg(struct ufs_hba *hba, bool on);
-static int ufshcd_setup_vreg(struct ufs_hba *hba, bool on);
-static inline int ufshcd_config_vreg_hpm(struct ufs_hba *hba,
-					 struct ufs_vreg *vreg);
-static int ufshcd_try_to_abort_task(struct ufs_hba *hba, int tag);
-static void ufshcd_wb_toggle_flush_during_h8(struct ufs_hba *hba, bool set);
-static inline void ufshcd_wb_toggle_flush(struct ufs_hba *hba, bool enable);
-static void ufshcd_hba_vreg_set_lpm(struct ufs_hba *hba);
-static void ufshcd_hba_vreg_set_hpm(struct ufs_hba *hba);
-
-static inline void ufshcd_enable_irq(struct ufs_hba *hba)
-{
-	if (!hba->is_irq_enabled) {
-		enable_irq(hba->irq);
-		hba->is_irq_enabled = true;
-	}
-}
-
-static inline void ufshcd_disable_irq(struct ufs_hba *hba)
-{
-	if (hba->is_irq_enabled) {
-		disable_irq(hba->irq);
-		hba->is_irq_enabled = false;
-	}
-}
-
-static inline void ufshcd_wb_config(struct ufs_hba *hba)
-{
-	if (!ufshcd_is_wb_allowed(hba))
-		return;
-
-	ufshcd_wb_toggle(hba, true);
-
-	ufshcd_wb_toggle_flush_during_h8(hba, true);
-	if (!(hba->quirks & UFSHCI_QUIRK_SKIP_MANUAL_WB_FLUSH_CTRL))
-		ufshcd_wb_toggle_flush(hba, true);
-}
-
-static void ufshcd_scsi_unblock_requests(struct ufs_hba *hba)
-{
-	if (atomic_dec_and_test(&hba->scsi_block_reqs_cnt))
-		scsi_unblock_requests(hba->host);
-}
-
-static void ufshcd_scsi_block_requests(struct ufs_hba *hba)
-{
-	if (atomic_inc_return(&hba->scsi_block_reqs_cnt) == 1)
-		scsi_block_requests(hba->host);
-}
-
-static void ufshcd_add_cmd_upiu_trace(struct ufs_hba *hba, unsigned int tag,
-				      enum ufs_trace_str_t str_t)
-{
-	struct utp_upiu_req *rq = hba->lrb[tag].ucd_req_ptr;
-	struct utp_upiu_header *header;
-
-	if (!trace_ufshcd_upiu_enabled())
-		return;
-
-	if (str_t == UFS_CMD_SEND)
-		header = &rq->header;
-	else
-		header = &hba->lrb[tag].ucd_rsp_ptr->header;
-
-	trace_ufshcd_upiu(dev_name(hba->dev), str_t, header, &rq->sc.cdb,
-			  UFS_TSF_CDB);
-}
-
-static void ufshcd_add_query_upiu_trace(struct ufs_hba *hba,
-					enum ufs_trace_str_t str_t,
-					struct utp_upiu_req *rq_rsp)
-{
-	if (!trace_ufshcd_upiu_enabled())
-		return;
-
-	trace_ufshcd_upiu(dev_name(hba->dev), str_t, &rq_rsp->header,
-			  &rq_rsp->qr, UFS_TSF_OSF);
-}
-
-static void ufshcd_add_tm_upiu_trace(struct ufs_hba *hba, unsigned int tag,
-				     enum ufs_trace_str_t str_t)
-{
-	struct utp_task_req_desc *descp = &hba->utmrdl_base_addr[tag];
-
-	if (!trace_ufshcd_upiu_enabled())
-		return;
-
-	if (str_t == UFS_TM_SEND)
-		trace_ufshcd_upiu(dev_name(hba->dev), str_t,
-				  &descp->upiu_req.req_header,
-				  &descp->upiu_req.input_param1,
-				  UFS_TSF_TM_INPUT);
-	else
-		trace_ufshcd_upiu(dev_name(hba->dev), str_t,
-				  &descp->upiu_rsp.rsp_header,
-				  &descp->upiu_rsp.output_param1,
-				  UFS_TSF_TM_OUTPUT);
-}
-
-static void ufshcd_add_uic_command_trace(struct ufs_hba *hba,
-					 struct uic_command *ucmd,
-					 enum ufs_trace_str_t str_t)
-{
-	u32 cmd;
-
-	if (!trace_ufshcd_uic_command_enabled())
-		return;
-
-	if (str_t == UFS_CMD_SEND)
-		cmd = ucmd->command;
-	else
-		cmd = ufshcd_readl(hba, REG_UIC_COMMAND);
-
-	trace_ufshcd_uic_command(dev_name(hba->dev), str_t, cmd,
-				 ufshcd_readl(hba, REG_UIC_COMMAND_ARG_1),
-				 ufshcd_readl(hba, REG_UIC_COMMAND_ARG_2),
-				 ufshcd_readl(hba, REG_UIC_COMMAND_ARG_3));
-}
-
-static void ufshcd_add_command_trace(struct ufs_hba *hba, unsigned int tag,
-				     enum ufs_trace_str_t str_t)
-{
-	u64 lba = 0;
-	u8 opcode = 0, group_id = 0;
-	u32 intr, doorbell;
-	struct ufshcd_lrb *lrbp = &hba->lrb[tag];
-	struct scsi_cmnd *cmd = lrbp->cmd;
-	struct request *rq = scsi_cmd_to_rq(cmd);
-	int transfer_len = -1;
-
-	if (!cmd)
-		return;
-
-	/* trace UPIU also */
-	ufshcd_add_cmd_upiu_trace(hba, tag, str_t);
-	if (!trace_ufshcd_command_enabled())
-		return;
-
-	opcode = cmd->cmnd[0];
-
-	if (opcode == READ_10 || opcode == WRITE_10) {
-		/*
-		 * Currently we only fully trace read(10) and write(10) commands
-		 */
-		transfer_len =
-		       be32_to_cpu(lrbp->ucd_req_ptr->sc.exp_data_transfer_len);
-		lba = scsi_get_lba(cmd);
-		if (opcode == WRITE_10)
-			group_id = lrbp->cmd->cmnd[6];
-	} else if (opcode == UNMAP) {
-		/*
-		 * The number of Bytes to be unmapped beginning with the lba.
-		 */
-		transfer_len = blk_rq_bytes(rq);
-		lba = scsi_get_lba(cmd);
-	}
-
-	intr = ufshcd_readl(hba, REG_INTERRUPT_STATUS);
-	doorbell = ufshcd_readl(hba, REG_UTP_TRANSFER_REQ_DOOR_BELL);
-	trace_ufshcd_command(dev_name(hba->dev), str_t, tag,
-			doorbell, transfer_len, intr, lba, opcode, group_id);
-}
-
-static void ufshcd_print_clk_freqs(struct ufs_hba *hba)
-{
-	struct ufs_clk_info *clki;
-	struct list_head *head = &hba->clk_list_head;
-
-	if (list_empty(head))
-		return;
-
-	list_for_each_entry(clki, head, list) {
-		if (!IS_ERR_OR_NULL(clki->clk) && clki->min_freq &&
-				clki->max_freq)
-			dev_err(hba->dev, "clk: %s, rate: %u\n",
-					clki->name, clki->curr_freq);
-	}
-}
-
-static void ufshcd_print_evt(struct ufs_hba *hba, u32 id,
-			     char *err_name)
-{
-	int i;
-	bool found = false;
-	struct ufs_event_hist *e;
-
-	if (id >= UFS_EVT_CNT)
-		return;
-
-	e = &hba->ufs_stats.event[id];
-
-	for (i = 0; i < UFS_EVENT_HIST_LENGTH; i++) {
-		int p = (i + e->pos) % UFS_EVENT_HIST_LENGTH;
-
-		if (e->tstamp[p] == 0)
-			continue;
-		dev_err(hba->dev, "%s[%d] = 0x%x at %lld us\n", err_name, p,
-			e->val[p], ktime_to_us(e->tstamp[p]));
-		found = true;
-	}
-
-	if (!found)
-		dev_err(hba->dev, "No record of %s\n", err_name);
-	else
-		dev_err(hba->dev, "%s: total cnt=%llu\n", err_name, e->cnt);
-}
-
-static void ufshcd_print_evt_hist(struct ufs_hba *hba)
-{
-	ufshcd_dump_regs(hba, 0, UFSHCI_REG_SPACE_SIZE, "host_regs: ");
-
-	ufshcd_print_evt(hba, UFS_EVT_PA_ERR, "pa_err");
-	ufshcd_print_evt(hba, UFS_EVT_DL_ERR, "dl_err");
-	ufshcd_print_evt(hba, UFS_EVT_NL_ERR, "nl_err");
-	ufshcd_print_evt(hba, UFS_EVT_TL_ERR, "tl_err");
-	ufshcd_print_evt(hba, UFS_EVT_DME_ERR, "dme_err");
-	ufshcd_print_evt(hba, UFS_EVT_AUTO_HIBERN8_ERR,
-			 "auto_hibern8_err");
-	ufshcd_print_evt(hba, UFS_EVT_FATAL_ERR, "fatal_err");
-	ufshcd_print_evt(hba, UFS_EVT_LINK_STARTUP_FAIL,
-			 "link_startup_fail");
-	ufshcd_print_evt(hba, UFS_EVT_RESUME_ERR, "resume_fail");
-	ufshcd_print_evt(hba, UFS_EVT_SUSPEND_ERR,
-			 "suspend_fail");
-	ufshcd_print_evt(hba, UFS_EVT_DEV_RESET, "dev_reset");
-	ufshcd_print_evt(hba, UFS_EVT_HOST_RESET, "host_reset");
-	ufshcd_print_evt(hba, UFS_EVT_ABORT, "task_abort");
-
-	ufshcd_vops_dbg_register_dump(hba);
-}
-
-static
-void ufshcd_print_trs(struct ufs_hba *hba, unsigned long bitmap, bool pr_prdt)
-{
-	struct ufshcd_lrb *lrbp;
-	int prdt_length;
-	int tag;
-
-	for_each_set_bit(tag, &bitmap, hba->nutrs) {
-		lrbp = &hba->lrb[tag];
-
-		dev_err(hba->dev, "UPIU[%d] - issue time %lld us\n",
-				tag, ktime_to_us(lrbp->issue_time_stamp));
-		dev_err(hba->dev, "UPIU[%d] - complete time %lld us\n",
-				tag, ktime_to_us(lrbp->compl_time_stamp));
-		dev_err(hba->dev,
-			"UPIU[%d] - Transfer Request Descriptor phys@0x%llx\n",
-			tag, (u64)lrbp->utrd_dma_addr);
-
-		ufshcd_hex_dump("UPIU TRD: ", lrbp->utr_descriptor_ptr,
-				sizeof(struct utp_transfer_req_desc));
-		dev_err(hba->dev, "UPIU[%d] - Request UPIU phys@0x%llx\n", tag,
-			(u64)lrbp->ucd_req_dma_addr);
-		ufshcd_hex_dump("UPIU REQ: ", lrbp->ucd_req_ptr,
-				sizeof(struct utp_upiu_req));
-		dev_err(hba->dev, "UPIU[%d] - Response UPIU phys@0x%llx\n", tag,
-			(u64)lrbp->ucd_rsp_dma_addr);
-		ufshcd_hex_dump("UPIU RSP: ", lrbp->ucd_rsp_ptr,
-				sizeof(struct utp_upiu_rsp));
-
-		prdt_length = le16_to_cpu(
-			lrbp->utr_descriptor_ptr->prd_table_length);
-		if (hba->quirks & UFSHCD_QUIRK_PRDT_BYTE_GRAN)
-			prdt_length /= sizeof(struct ufshcd_sg_entry);
-
-		dev_err(hba->dev,
-			"UPIU[%d] - PRDT - %d entries  phys@0x%llx\n",
-			tag, prdt_length,
-			(u64)lrbp->ucd_prdt_dma_addr);
-
-		if (pr_prdt)
-			ufshcd_hex_dump("UPIU PRDT: ", lrbp->ucd_prdt_ptr,
-				sizeof(struct ufshcd_sg_entry) * prdt_length);
-	}
-}
-
-static void ufshcd_print_tmrs(struct ufs_hba *hba, unsigned long bitmap)
-{
-	int tag;
-
-	for_each_set_bit(tag, &bitmap, hba->nutmrs) {
-		struct utp_task_req_desc *tmrdp = &hba->utmrdl_base_addr[tag];
-
-		dev_err(hba->dev, "TM[%d] - Task Management Header\n", tag);
-		ufshcd_hex_dump("", tmrdp, sizeof(*tmrdp));
-	}
-}
-
-static void ufshcd_print_host_state(struct ufs_hba *hba)
-{
-	struct scsi_device *sdev_ufs = hba->ufs_device_wlun;
-
-	dev_err(hba->dev, "UFS Host state=%d\n", hba->ufshcd_state);
-	dev_err(hba->dev, "outstanding reqs=0x%lx tasks=0x%lx\n",
-		hba->outstanding_reqs, hba->outstanding_tasks);
-	dev_err(hba->dev, "saved_err=0x%x, saved_uic_err=0x%x\n",
-		hba->saved_err, hba->saved_uic_err);
-	dev_err(hba->dev, "Device power mode=%d, UIC link state=%d\n",
-		hba->curr_dev_pwr_mode, hba->uic_link_state);
-	dev_err(hba->dev, "PM in progress=%d, sys. suspended=%d\n",
-		hba->pm_op_in_progress, hba->is_sys_suspended);
-	dev_err(hba->dev, "Auto BKOPS=%d, Host self-block=%d\n",
-		hba->auto_bkops_enabled, hba->host->host_self_blocked);
-	dev_err(hba->dev, "Clk gate=%d\n", hba->clk_gating.state);
-	dev_err(hba->dev,
-		"last_hibern8_exit_tstamp at %lld us, hibern8_exit_cnt=%d\n",
-		ktime_to_us(hba->ufs_stats.last_hibern8_exit_tstamp),
-		hba->ufs_stats.hibern8_exit_cnt);
-	dev_err(hba->dev, "last intr at %lld us, last intr status=0x%x\n",
-		ktime_to_us(hba->ufs_stats.last_intr_ts),
-		hba->ufs_stats.last_intr_status);
-	dev_err(hba->dev, "error handling flags=0x%x, req. abort count=%d\n",
-		hba->eh_flags, hba->req_abort_count);
-	dev_err(hba->dev, "hba->ufs_version=0x%x, Host capabilities=0x%x, caps=0x%x\n",
-		hba->ufs_version, hba->capabilities, hba->caps);
-	dev_err(hba->dev, "quirks=0x%x, dev. quirks=0x%x\n", hba->quirks,
-		hba->dev_quirks);
-	if (sdev_ufs)
-		dev_err(hba->dev, "UFS dev info: %.8s %.16s rev %.4s\n",
-			sdev_ufs->vendor, sdev_ufs->model, sdev_ufs->rev);
-
-	ufshcd_print_clk_freqs(hba);
-}
-
-/**
- * ufshcd_print_pwr_info - print power params as saved in hba
- * power info
- * @hba: per-adapter instance
- */
-static void ufshcd_print_pwr_info(struct ufs_hba *hba)
-{
-	static const char * const names[] = {
-		"INVALID MODE",
-		"FAST MODE",
-		"SLOW_MODE",
-		"INVALID MODE",
-		"FASTAUTO_MODE",
-		"SLOWAUTO_MODE",
-		"INVALID MODE",
-	};
-
-	/*
-	 * Using dev_dbg to avoid messages during runtime PM to avoid
-	 * never-ending cycles of messages written back to storage by user space
-	 * causing runtime resume, causing more messages and so on.
-	 */
-	dev_dbg(hba->dev, "%s:[RX, TX]: gear=[%d, %d], lane[%d, %d], pwr[%s, %s], rate = %d\n",
-		 __func__,
-		 hba->pwr_info.gear_rx, hba->pwr_info.gear_tx,
-		 hba->pwr_info.lane_rx, hba->pwr_info.lane_tx,
-		 names[hba->pwr_info.pwr_rx],
-		 names[hba->pwr_info.pwr_tx],
-		 hba->pwr_info.hs_rate);
-}
-
-static void ufshcd_device_reset(struct ufs_hba *hba)
-{
-	int err;
-
-	err = ufshcd_vops_device_reset(hba);
-
-	if (!err) {
-		ufshcd_set_ufs_dev_active(hba);
-		if (ufshcd_is_wb_allowed(hba)) {
-			hba->dev_info.wb_enabled = false;
-			hba->dev_info.wb_buf_flush_enabled = false;
-		}
-	}
-	if (err != -EOPNOTSUPP)
-		ufshcd_update_evt_hist(hba, UFS_EVT_DEV_RESET, err);
-}
-
-void ufshcd_delay_us(unsigned long us, unsigned long tolerance)
-{
-	if (!us)
-		return;
-
-	if (us < 10)
-		udelay(us);
-	else
-		usleep_range(us, us + tolerance);
-}
-EXPORT_SYMBOL_GPL(ufshcd_delay_us);
-
-/**
- * ufshcd_wait_for_register - wait for register value to change
- * @hba: per-adapter interface
- * @reg: mmio register offset
- * @mask: mask to apply to the read register value
- * @val: value to wait for
- * @interval_us: polling interval in microseconds
- * @timeout_ms: timeout in milliseconds
- *
- * Return:
- * -ETIMEDOUT on error, zero on success.
- */
-static int ufshcd_wait_for_register(struct ufs_hba *hba, u32 reg, u32 mask,
-				u32 val, unsigned long interval_us,
-				unsigned long timeout_ms)
-{
-	int err = 0;
-	unsigned long timeout = jiffies + msecs_to_jiffies(timeout_ms);
-
-	/* ignore bits that we don't intend to wait on */
-	val = val & mask;
-
-	while ((ufshcd_readl(hba, reg) & mask) != val) {
-		usleep_range(interval_us, interval_us + 50);
-		if (time_after(jiffies, timeout)) {
-			if ((ufshcd_readl(hba, reg) & mask) != val)
-				err = -ETIMEDOUT;
-			break;
-		}
-	}
-
-	return err;
-}
-
-/**
- * ufshcd_get_intr_mask - Get the interrupt bit mask
- * @hba: Pointer to adapter instance
- *
- * Returns interrupt bit mask per version
- */
-static inline u32 ufshcd_get_intr_mask(struct ufs_hba *hba)
-{
-	if (hba->ufs_version == ufshci_version(1, 0))
-		return INTERRUPT_MASK_ALL_VER_10;
-	if (hba->ufs_version <= ufshci_version(2, 0))
-		return INTERRUPT_MASK_ALL_VER_11;
-
-	return INTERRUPT_MASK_ALL_VER_21;
-}
-
-/**
- * ufshcd_get_ufs_version - Get the UFS version supported by the HBA
- * @hba: Pointer to adapter instance
- *
- * Returns UFSHCI version supported by the controller
- */
-static inline u32 ufshcd_get_ufs_version(struct ufs_hba *hba)
-{
-	u32 ufshci_ver;
-
-	if (hba->quirks & UFSHCD_QUIRK_BROKEN_UFS_HCI_VERSION)
-		ufshci_ver = ufshcd_vops_get_ufs_hci_version(hba);
-	else
-		ufshci_ver = ufshcd_readl(hba, REG_UFS_VERSION);
-
-	/*
-	 * UFSHCI v1.x uses a different version scheme, in order
-	 * to allow the use of comparisons with the ufshci_version
-	 * function, we convert it to the same scheme as ufs 2.0+.
-	 */
-	if (ufshci_ver & 0x00010000)
-		return ufshci_version(1, ufshci_ver & 0x00000100);
-
-	return ufshci_ver;
-}
-
-/**
- * ufshcd_is_device_present - Check if any device connected to
- *			      the host controller
- * @hba: pointer to adapter instance
- *
- * Returns true if device present, false if no device detected
- */
-static inline bool ufshcd_is_device_present(struct ufs_hba *hba)
-{
-	return ufshcd_readl(hba, REG_CONTROLLER_STATUS) & DEVICE_PRESENT;
-}
-
-/**
- * ufshcd_get_tr_ocs - Get the UTRD Overall Command Status
- * @lrbp: pointer to local command reference block
- *
- * This function is used to get the OCS field from UTRD
- * Returns the OCS field in the UTRD
- */
-static enum utp_ocs ufshcd_get_tr_ocs(struct ufshcd_lrb *lrbp)
-{
-	return le32_to_cpu(lrbp->utr_descriptor_ptr->header.dword_2) & MASK_OCS;
-}
-
-/**
- * ufshcd_utrl_clear - Clear a bit in UTRLCLR register
- * @hba: per adapter instance
- * @pos: position of the bit to be cleared
- */
-static inline void ufshcd_utrl_clear(struct ufs_hba *hba, u32 pos)
-{
-	if (hba->quirks & UFSHCI_QUIRK_BROKEN_REQ_LIST_CLR)
-		ufshcd_writel(hba, (1 << pos), REG_UTP_TRANSFER_REQ_LIST_CLEAR);
-	else
-		ufshcd_writel(hba, ~(1 << pos),
-				REG_UTP_TRANSFER_REQ_LIST_CLEAR);
-}
-
-/**
- * ufshcd_utmrl_clear - Clear a bit in UTRMLCLR register
- * @hba: per adapter instance
- * @pos: position of the bit to be cleared
- */
-static inline void ufshcd_utmrl_clear(struct ufs_hba *hba, u32 pos)
-{
-	if (hba->quirks & UFSHCI_QUIRK_BROKEN_REQ_LIST_CLR)
-		ufshcd_writel(hba, (1 << pos), REG_UTP_TASK_REQ_LIST_CLEAR);
-	else
-		ufshcd_writel(hba, ~(1 << pos), REG_UTP_TASK_REQ_LIST_CLEAR);
-}
-
-/**
- * ufshcd_get_lists_status - Check UCRDY, UTRLRDY and UTMRLRDY
- * @reg: Register value of host controller status
- *
- * Returns integer, 0 on Success and positive value if failed
- */
-static inline int ufshcd_get_lists_status(u32 reg)
-{
-	return !((reg & UFSHCD_STATUS_READY) == UFSHCD_STATUS_READY);
-}
-
-/**
- * ufshcd_get_uic_cmd_result - Get the UIC command result
- * @hba: Pointer to adapter instance
- *
- * This function gets the result of UIC command completion
- * Returns 0 on success, non zero value on error
- */
-static inline int ufshcd_get_uic_cmd_result(struct ufs_hba *hba)
-{
-	return ufshcd_readl(hba, REG_UIC_COMMAND_ARG_2) &
-	       MASK_UIC_COMMAND_RESULT;
-}
-
-/**
- * ufshcd_get_dme_attr_val - Get the value of attribute returned by UIC command
- * @hba: Pointer to adapter instance
- *
- * This function gets UIC command argument3
- * Returns 0 on success, non zero value on error
- */
-static inline u32 ufshcd_get_dme_attr_val(struct ufs_hba *hba)
-{
-	return ufshcd_readl(hba, REG_UIC_COMMAND_ARG_3);
-}
-
-/**
- * ufshcd_get_req_rsp - returns the TR response transaction type
- * @ucd_rsp_ptr: pointer to response UPIU
- */
-static inline int
-ufshcd_get_req_rsp(struct utp_upiu_rsp *ucd_rsp_ptr)
-{
-	return be32_to_cpu(ucd_rsp_ptr->header.dword_0) >> 24;
-}
-
-/**
- * ufshcd_get_rsp_upiu_result - Get the result from response UPIU
- * @ucd_rsp_ptr: pointer to response UPIU
- *
- * This function gets the response status and scsi_status from response UPIU
- * Returns the response result code.
- */
-static inline int
-ufshcd_get_rsp_upiu_result(struct utp_upiu_rsp *ucd_rsp_ptr)
-{
-	return be32_to_cpu(ucd_rsp_ptr->header.dword_1) & MASK_RSP_UPIU_RESULT;
-}
-
-/*
- * ufshcd_get_rsp_upiu_data_seg_len - Get the data segment length
- *				from response UPIU
- * @ucd_rsp_ptr: pointer to response UPIU
- *
- * Return the data segment length.
- */
-static inline unsigned int
-ufshcd_get_rsp_upiu_data_seg_len(struct utp_upiu_rsp *ucd_rsp_ptr)
-{
-	return be32_to_cpu(ucd_rsp_ptr->header.dword_2) &
-		MASK_RSP_UPIU_DATA_SEG_LEN;
-}
-
-/**
- * ufshcd_is_exception_event - Check if the device raised an exception event
- * @ucd_rsp_ptr: pointer to response UPIU
- *
- * The function checks if the device raised an exception event indicated in
- * the Device Information field of response UPIU.
- *
- * Returns true if exception is raised, false otherwise.
- */
-static inline bool ufshcd_is_exception_event(struct utp_upiu_rsp *ucd_rsp_ptr)
-{
-	return be32_to_cpu(ucd_rsp_ptr->header.dword_2) &
-			MASK_RSP_EXCEPTION_EVENT;
-}
-
-/**
- * ufshcd_reset_intr_aggr - Reset interrupt aggregation values.
- * @hba: per adapter instance
- */
-static inline void
-ufshcd_reset_intr_aggr(struct ufs_hba *hba)
-{
-	ufshcd_writel(hba, INT_AGGR_ENABLE |
-		      INT_AGGR_COUNTER_AND_TIMER_RESET,
-		      REG_UTP_TRANSFER_REQ_INT_AGG_CONTROL);
-}
-
-/**
- * ufshcd_config_intr_aggr - Configure interrupt aggregation values.
- * @hba: per adapter instance
- * @cnt: Interrupt aggregation counter threshold
- * @tmout: Interrupt aggregation timeout value
- */
-static inline void
-ufshcd_config_intr_aggr(struct ufs_hba *hba, u8 cnt, u8 tmout)
-{
-	ufshcd_writel(hba, INT_AGGR_ENABLE | INT_AGGR_PARAM_WRITE |
-		      INT_AGGR_COUNTER_THLD_VAL(cnt) |
-		      INT_AGGR_TIMEOUT_VAL(tmout),
-		      REG_UTP_TRANSFER_REQ_INT_AGG_CONTROL);
-}
-
-/**
- * ufshcd_disable_intr_aggr - Disables interrupt aggregation.
- * @hba: per adapter instance
- */
-static inline void ufshcd_disable_intr_aggr(struct ufs_hba *hba)
-{
-	ufshcd_writel(hba, 0, REG_UTP_TRANSFER_REQ_INT_AGG_CONTROL);
-}
-
-/**
- * ufshcd_enable_run_stop_reg - Enable run-stop registers,
- *			When run-stop registers are set to 1, it indicates the
- *			host controller that it can process the requests
- * @hba: per adapter instance
- */
-static void ufshcd_enable_run_stop_reg(struct ufs_hba *hba)
-{
-	ufshcd_writel(hba, UTP_TASK_REQ_LIST_RUN_STOP_BIT,
-		      REG_UTP_TASK_REQ_LIST_RUN_STOP);
-	ufshcd_writel(hba, UTP_TRANSFER_REQ_LIST_RUN_STOP_BIT,
-		      REG_UTP_TRANSFER_REQ_LIST_RUN_STOP);
-}
-
-/**
- * ufshcd_hba_start - Start controller initialization sequence
- * @hba: per adapter instance
- */
-static inline void ufshcd_hba_start(struct ufs_hba *hba)
-{
-	u32 val = CONTROLLER_ENABLE;
-
-	if (ufshcd_crypto_enable(hba))
-		val |= CRYPTO_GENERAL_ENABLE;
-
-	ufshcd_writel(hba, val, REG_CONTROLLER_ENABLE);
-}
-
-/**
- * ufshcd_is_hba_active - Get controller state
- * @hba: per adapter instance
- *
- * Returns true if and only if the controller is active.
- */
-static inline bool ufshcd_is_hba_active(struct ufs_hba *hba)
-{
-	return ufshcd_readl(hba, REG_CONTROLLER_ENABLE) & CONTROLLER_ENABLE;
-}
-
-u32 ufshcd_get_local_unipro_ver(struct ufs_hba *hba)
-{
-	/* HCI version 1.0 and 1.1 supports UniPro 1.41 */
-	if (hba->ufs_version <= ufshci_version(1, 1))
-		return UFS_UNIPRO_VER_1_41;
-	else
-		return UFS_UNIPRO_VER_1_6;
-}
-EXPORT_SYMBOL(ufshcd_get_local_unipro_ver);
-
-static bool ufshcd_is_unipro_pa_params_tuning_req(struct ufs_hba *hba)
-{
-	/*
-	 * If both host and device support UniPro ver1.6 or later, PA layer
-	 * parameters tuning happens during link startup itself.
-	 *
-	 * We can manually tune PA layer parameters if either host or device
-	 * doesn't support UniPro ver 1.6 or later. But to keep manual tuning
-	 * logic simple, we will only do manual tuning if local unipro version
-	 * doesn't support ver1.6 or later.
-	 */
-	return ufshcd_get_local_unipro_ver(hba) < UFS_UNIPRO_VER_1_6;
-}
-
-/**
- * ufshcd_set_clk_freq - set UFS controller clock frequencies
- * @hba: per adapter instance
- * @scale_up: If True, set max possible frequency othewise set low frequency
- *
- * Returns 0 if successful
- * Returns < 0 for any other errors
- */
-static int ufshcd_set_clk_freq(struct ufs_hba *hba, bool scale_up)
-{
-	int ret = 0;
-	struct ufs_clk_info *clki;
-	struct list_head *head = &hba->clk_list_head;
-
-	if (list_empty(head))
-		goto out;
-
-	list_for_each_entry(clki, head, list) {
-		if (!IS_ERR_OR_NULL(clki->clk)) {
-			if (scale_up && clki->max_freq) {
-				if (clki->curr_freq == clki->max_freq)
-					continue;
-
-				ret = clk_set_rate(clki->clk, clki->max_freq);
-				if (ret) {
-					dev_err(hba->dev, "%s: %s clk set rate(%dHz) failed, %d\n",
-						__func__, clki->name,
-						clki->max_freq, ret);
-					break;
-				}
-				trace_ufshcd_clk_scaling(dev_name(hba->dev),
-						"scaled up", clki->name,
-						clki->curr_freq,
-						clki->max_freq);
-
-				clki->curr_freq = clki->max_freq;
-
-			} else if (!scale_up && clki->min_freq) {
-				if (clki->curr_freq == clki->min_freq)
-					continue;
-
-				ret = clk_set_rate(clki->clk, clki->min_freq);
-				if (ret) {
-					dev_err(hba->dev, "%s: %s clk set rate(%dHz) failed, %d\n",
-						__func__, clki->name,
-						clki->min_freq, ret);
-					break;
-				}
-				trace_ufshcd_clk_scaling(dev_name(hba->dev),
-						"scaled down", clki->name,
-						clki->curr_freq,
-						clki->min_freq);
-				clki->curr_freq = clki->min_freq;
-			}
-		}
-		dev_dbg(hba->dev, "%s: clk: %s, rate: %lu\n", __func__,
-				clki->name, clk_get_rate(clki->clk));
-	}
-
-out:
-	return ret;
-}
-
-/**
- * ufshcd_scale_clks - scale up or scale down UFS controller clocks
- * @hba: per adapter instance
- * @scale_up: True if scaling up and false if scaling down
- *
- * Returns 0 if successful
- * Returns < 0 for any other errors
- */
-static int ufshcd_scale_clks(struct ufs_hba *hba, bool scale_up)
-{
-	int ret = 0;
-	ktime_t start = ktime_get();
-
-	ret = ufshcd_vops_clk_scale_notify(hba, scale_up, PRE_CHANGE);
-	if (ret)
-		goto out;
-
-	ret = ufshcd_set_clk_freq(hba, scale_up);
-	if (ret)
-		goto out;
-
-	ret = ufshcd_vops_clk_scale_notify(hba, scale_up, POST_CHANGE);
-	if (ret)
-		ufshcd_set_clk_freq(hba, !scale_up);
-
-out:
-	trace_ufshcd_profile_clk_scaling(dev_name(hba->dev),
-			(scale_up ? "up" : "down"),
-			ktime_to_us(ktime_sub(ktime_get(), start)), ret);
-	return ret;
-}
-
-/**
- * ufshcd_is_devfreq_scaling_required - check if scaling is required or not
- * @hba: per adapter instance
- * @scale_up: True if scaling up and false if scaling down
- *
- * Returns true if scaling is required, false otherwise.
- */
-static bool ufshcd_is_devfreq_scaling_required(struct ufs_hba *hba,
-					       bool scale_up)
-{
-	struct ufs_clk_info *clki;
-	struct list_head *head = &hba->clk_list_head;
-
-	if (list_empty(head))
-		return false;
-
-	list_for_each_entry(clki, head, list) {
-		if (!IS_ERR_OR_NULL(clki->clk)) {
-			if (scale_up && clki->max_freq) {
-				if (clki->curr_freq == clki->max_freq)
-					continue;
-				return true;
-			} else if (!scale_up && clki->min_freq) {
-				if (clki->curr_freq == clki->min_freq)
-					continue;
-				return true;
-			}
-		}
-	}
-
-	return false;
-}
-
-/*
- * Determine the number of pending commands by counting the bits in the SCSI
- * device budget maps. This approach has been selected because a bit is set in
- * the budget map before scsi_host_queue_ready() checks the host_self_blocked
- * flag. The host_self_blocked flag can be modified by calling
- * scsi_block_requests() or scsi_unblock_requests().
- */
-static u32 ufshcd_pending_cmds(struct ufs_hba *hba)
-{
-	struct scsi_device *sdev;
-	u32 pending = 0;
-
-	lockdep_assert_held(hba->host->host_lock);
-	__shost_for_each_device(sdev, hba->host)
-		pending += sbitmap_weight(&sdev->budget_map);
-
-	return pending;
-}
-
-static int ufshcd_wait_for_doorbell_clr(struct ufs_hba *hba,
-					u64 wait_timeout_us)
-{
-	unsigned long flags;
-	int ret = 0;
-	u32 tm_doorbell;
-	u32 tr_pending;
-	bool timeout = false, do_last_check = false;
-	ktime_t start;
-
-	ufshcd_hold(hba, false);
-	spin_lock_irqsave(hba->host->host_lock, flags);
-	/*
-	 * Wait for all the outstanding tasks/transfer requests.
-	 * Verify by checking the doorbell registers are clear.
-	 */
-	start = ktime_get();
-	do {
-		if (hba->ufshcd_state != UFSHCD_STATE_OPERATIONAL) {
-			ret = -EBUSY;
-			goto out;
-		}
-
-		tm_doorbell = ufshcd_readl(hba, REG_UTP_TASK_REQ_DOOR_BELL);
-		tr_pending = ufshcd_pending_cmds(hba);
-		if (!tm_doorbell && !tr_pending) {
-			timeout = false;
-			break;
-		} else if (do_last_check) {
-			break;
-		}
-
-		spin_unlock_irqrestore(hba->host->host_lock, flags);
-		schedule();
-		if (ktime_to_us(ktime_sub(ktime_get(), start)) >
-		    wait_timeout_us) {
-			timeout = true;
-			/*
-			 * We might have scheduled out for long time so make
-			 * sure to check if doorbells are cleared by this time
-			 * or not.
-			 */
-			do_last_check = true;
-		}
-		spin_lock_irqsave(hba->host->host_lock, flags);
-	} while (tm_doorbell || tr_pending);
-
-	if (timeout) {
-		dev_err(hba->dev,
-			"%s: timedout waiting for doorbell to clear (tm=0x%x, tr=0x%x)\n",
-			__func__, tm_doorbell, tr_pending);
-		ret = -EBUSY;
-	}
-out:
-	spin_unlock_irqrestore(hba->host->host_lock, flags);
-	ufshcd_release(hba);
-	return ret;
-}
-
-/**
- * ufshcd_scale_gear - scale up/down UFS gear
- * @hba: per adapter instance
- * @scale_up: True for scaling up gear and false for scaling down
- *
- * Returns 0 for success,
- * Returns -EBUSY if scaling can't happen at this time
- * Returns non-zero for any other errors
- */
-static int ufshcd_scale_gear(struct ufs_hba *hba, bool scale_up)
-{
-	int ret = 0;
-	struct ufs_pa_layer_attr new_pwr_info;
-
-	if (scale_up) {
-		memcpy(&new_pwr_info, &hba->clk_scaling.saved_pwr_info.info,
-		       sizeof(struct ufs_pa_layer_attr));
-	} else {
-		memcpy(&new_pwr_info, &hba->pwr_info,
-		       sizeof(struct ufs_pa_layer_attr));
-
-		if (hba->pwr_info.gear_tx > hba->clk_scaling.min_gear ||
-		    hba->pwr_info.gear_rx > hba->clk_scaling.min_gear) {
-			/* save the current power mode */
-			memcpy(&hba->clk_scaling.saved_pwr_info.info,
-				&hba->pwr_info,
-				sizeof(struct ufs_pa_layer_attr));
-
-			/* scale down gear */
-			new_pwr_info.gear_tx = hba->clk_scaling.min_gear;
-			new_pwr_info.gear_rx = hba->clk_scaling.min_gear;
-		}
-	}
-
-	/* check if the power mode needs to be changed or not? */
-	ret = ufshcd_config_pwr_mode(hba, &new_pwr_info);
-	if (ret)
-		dev_err(hba->dev, "%s: failed err %d, old gear: (tx %d rx %d), new gear: (tx %d rx %d)",
-			__func__, ret,
-			hba->pwr_info.gear_tx, hba->pwr_info.gear_rx,
-			new_pwr_info.gear_tx, new_pwr_info.gear_rx);
-
-	return ret;
-}
-
-static int ufshcd_clock_scaling_prepare(struct ufs_hba *hba)
-{
-	#define DOORBELL_CLR_TOUT_US		(1000 * 1000) /* 1 sec */
-	int ret = 0;
-	/*
-	 * make sure that there are no outstanding requests when
-	 * clock scaling is in progress
-	 */
-	ufshcd_scsi_block_requests(hba);
-	down_write(&hba->clk_scaling_lock);
-
-	if (!hba->clk_scaling.is_allowed ||
-	    ufshcd_wait_for_doorbell_clr(hba, DOORBELL_CLR_TOUT_US)) {
-		ret = -EBUSY;
-		up_write(&hba->clk_scaling_lock);
-		ufshcd_scsi_unblock_requests(hba);
-		goto out;
-	}
-
-	/* let's not get into low power until clock scaling is completed */
-	ufshcd_hold(hba, false);
-
-out:
-	return ret;
-}
-
-static void ufshcd_clock_scaling_unprepare(struct ufs_hba *hba, bool writelock)
-{
-	if (writelock)
-		up_write(&hba->clk_scaling_lock);
-	else
-		up_read(&hba->clk_scaling_lock);
-	ufshcd_scsi_unblock_requests(hba);
-	ufshcd_release(hba);
-}
-
-/**
- * ufshcd_devfreq_scale - scale up/down UFS clocks and gear
- * @hba: per adapter instance
- * @scale_up: True for scaling up and false for scalin down
- *
- * Returns 0 for success,
- * Returns -EBUSY if scaling can't happen at this time
- * Returns non-zero for any other errors
- */
-static int ufshcd_devfreq_scale(struct ufs_hba *hba, bool scale_up)
-{
-	int ret = 0;
-	bool is_writelock = true;
-
-	ret = ufshcd_clock_scaling_prepare(hba);
-	if (ret)
-		return ret;
-
-	/* scale down the gear before scaling down clocks */
-	if (!scale_up) {
-		ret = ufshcd_scale_gear(hba, false);
-		if (ret)
-			goto out_unprepare;
-	}
-
-	ret = ufshcd_scale_clks(hba, scale_up);
-	if (ret) {
-		if (!scale_up)
-			ufshcd_scale_gear(hba, true);
-		goto out_unprepare;
-	}
-
-	/* scale up the gear after scaling up clocks */
-	if (scale_up) {
-		ret = ufshcd_scale_gear(hba, true);
-		if (ret) {
-			ufshcd_scale_clks(hba, false);
-			goto out_unprepare;
-		}
-	}
-
-	/* Enable Write Booster if we have scaled up else disable it */
-	downgrade_write(&hba->clk_scaling_lock);
-	is_writelock = false;
-	ufshcd_wb_toggle(hba, scale_up);
-
-out_unprepare:
-	ufshcd_clock_scaling_unprepare(hba, is_writelock);
-	return ret;
-}
-
-static void ufshcd_clk_scaling_suspend_work(struct work_struct *work)
-{
-	struct ufs_hba *hba = container_of(work, struct ufs_hba,
-					   clk_scaling.suspend_work);
-	unsigned long irq_flags;
-
-	spin_lock_irqsave(hba->host->host_lock, irq_flags);
-	if (hba->clk_scaling.active_reqs || hba->clk_scaling.is_suspended) {
-		spin_unlock_irqrestore(hba->host->host_lock, irq_flags);
-		return;
-	}
-	hba->clk_scaling.is_suspended = true;
-	spin_unlock_irqrestore(hba->host->host_lock, irq_flags);
-
-	__ufshcd_suspend_clkscaling(hba);
-}
-
-static void ufshcd_clk_scaling_resume_work(struct work_struct *work)
-{
-	struct ufs_hba *hba = container_of(work, struct ufs_hba,
-					   clk_scaling.resume_work);
-	unsigned long irq_flags;
-
-	spin_lock_irqsave(hba->host->host_lock, irq_flags);
-	if (!hba->clk_scaling.is_suspended) {
-		spin_unlock_irqrestore(hba->host->host_lock, irq_flags);
-		return;
-	}
-	hba->clk_scaling.is_suspended = false;
-	spin_unlock_irqrestore(hba->host->host_lock, irq_flags);
-
-	devfreq_resume_device(hba->devfreq);
-}
-
-static int ufshcd_devfreq_target(struct device *dev,
-				unsigned long *freq, u32 flags)
-{
-	int ret = 0;
-	struct ufs_hba *hba = dev_get_drvdata(dev);
-	ktime_t start;
-	bool scale_up, sched_clk_scaling_suspend_work = false;
-	struct list_head *clk_list = &hba->clk_list_head;
-	struct ufs_clk_info *clki;
-	unsigned long irq_flags;
-
-	if (!ufshcd_is_clkscaling_supported(hba))
-		return -EINVAL;
-
-	clki = list_first_entry(&hba->clk_list_head, struct ufs_clk_info, list);
-	/* Override with the closest supported frequency */
-	*freq = (unsigned long) clk_round_rate(clki->clk, *freq);
-	spin_lock_irqsave(hba->host->host_lock, irq_flags);
-	if (ufshcd_eh_in_progress(hba)) {
-		spin_unlock_irqrestore(hba->host->host_lock, irq_flags);
-		return 0;
-	}
-
-	if (!hba->clk_scaling.active_reqs)
-		sched_clk_scaling_suspend_work = true;
-
-	if (list_empty(clk_list)) {
-		spin_unlock_irqrestore(hba->host->host_lock, irq_flags);
-		goto out;
-	}
-
-	/* Decide based on the rounded-off frequency and update */
-	scale_up = *freq == clki->max_freq;
-	if (!scale_up)
-		*freq = clki->min_freq;
-	/* Update the frequency */
-	if (!ufshcd_is_devfreq_scaling_required(hba, scale_up)) {
-		spin_unlock_irqrestore(hba->host->host_lock, irq_flags);
-		ret = 0;
-		goto out; /* no state change required */
-	}
-	spin_unlock_irqrestore(hba->host->host_lock, irq_flags);
-
-	start = ktime_get();
-	ret = ufshcd_devfreq_scale(hba, scale_up);
-
-	trace_ufshcd_profile_clk_scaling(dev_name(hba->dev),
-		(scale_up ? "up" : "down"),
-		ktime_to_us(ktime_sub(ktime_get(), start)), ret);
-
-out:
-	if (sched_clk_scaling_suspend_work)
-		queue_work(hba->clk_scaling.workq,
-			   &hba->clk_scaling.suspend_work);
-
-	return ret;
-}
-
-static int ufshcd_devfreq_get_dev_status(struct device *dev,
-		struct devfreq_dev_status *stat)
-{
-	struct ufs_hba *hba = dev_get_drvdata(dev);
-	struct ufs_clk_scaling *scaling = &hba->clk_scaling;
-	unsigned long flags;
-	struct list_head *clk_list = &hba->clk_list_head;
-	struct ufs_clk_info *clki;
-	ktime_t curr_t;
-
-	if (!ufshcd_is_clkscaling_supported(hba))
-		return -EINVAL;
-
-	memset(stat, 0, sizeof(*stat));
-
-	spin_lock_irqsave(hba->host->host_lock, flags);
-	curr_t = ktime_get();
-	if (!scaling->window_start_t)
-		goto start_window;
-
-	clki = list_first_entry(clk_list, struct ufs_clk_info, list);
-	/*
-	 * If current frequency is 0, then the ondemand governor considers
-	 * there's no initial frequency set. And it always requests to set
-	 * to max. frequency.
-	 */
-	stat->current_frequency = clki->curr_freq;
-	if (scaling->is_busy_started)
-		scaling->tot_busy_t += ktime_us_delta(curr_t,
-				scaling->busy_start_t);
-
-	stat->total_time = ktime_us_delta(curr_t, scaling->window_start_t);
-	stat->busy_time = scaling->tot_busy_t;
-start_window:
-	scaling->window_start_t = curr_t;
-	scaling->tot_busy_t = 0;
-
-	if (hba->outstanding_reqs) {
-		scaling->busy_start_t = curr_t;
-		scaling->is_busy_started = true;
-	} else {
-		scaling->busy_start_t = 0;
-		scaling->is_busy_started = false;
-	}
-	spin_unlock_irqrestore(hba->host->host_lock, flags);
-	return 0;
-}
-
-static int ufshcd_devfreq_init(struct ufs_hba *hba)
-{
-	struct list_head *clk_list = &hba->clk_list_head;
-	struct ufs_clk_info *clki;
-	struct devfreq *devfreq;
-	int ret;
-
-	/* Skip devfreq if we don't have any clocks in the list */
-	if (list_empty(clk_list))
-		return 0;
-
-	clki = list_first_entry(clk_list, struct ufs_clk_info, list);
-	dev_pm_opp_add(hba->dev, clki->min_freq, 0);
-	dev_pm_opp_add(hba->dev, clki->max_freq, 0);
-
-	ufshcd_vops_config_scaling_param(hba, &hba->vps->devfreq_profile,
-					 &hba->vps->ondemand_data);
-	devfreq = devfreq_add_device(hba->dev,
-			&hba->vps->devfreq_profile,
-			DEVFREQ_GOV_SIMPLE_ONDEMAND,
-			&hba->vps->ondemand_data);
-	if (IS_ERR(devfreq)) {
-		ret = PTR_ERR(devfreq);
-		dev_err(hba->dev, "Unable to register with devfreq %d\n", ret);
-
-		dev_pm_opp_remove(hba->dev, clki->min_freq);
-		dev_pm_opp_remove(hba->dev, clki->max_freq);
-		return ret;
-	}
-
-	hba->devfreq = devfreq;
-
-	return 0;
-}
-
-static void ufshcd_devfreq_remove(struct ufs_hba *hba)
-{
-	struct list_head *clk_list = &hba->clk_list_head;
-	struct ufs_clk_info *clki;
-
-	if (!hba->devfreq)
-		return;
-
-	devfreq_remove_device(hba->devfreq);
-	hba->devfreq = NULL;
-
-	clki = list_first_entry(clk_list, struct ufs_clk_info, list);
-	dev_pm_opp_remove(hba->dev, clki->min_freq);
-	dev_pm_opp_remove(hba->dev, clki->max_freq);
-}
-
-static void __ufshcd_suspend_clkscaling(struct ufs_hba *hba)
-{
-	unsigned long flags;
-
-	devfreq_suspend_device(hba->devfreq);
-	spin_lock_irqsave(hba->host->host_lock, flags);
-	hba->clk_scaling.window_start_t = 0;
-	spin_unlock_irqrestore(hba->host->host_lock, flags);
-}
-
-static void ufshcd_suspend_clkscaling(struct ufs_hba *hba)
-{
-	unsigned long flags;
-	bool suspend = false;
-
-	cancel_work_sync(&hba->clk_scaling.suspend_work);
-	cancel_work_sync(&hba->clk_scaling.resume_work);
-
-	spin_lock_irqsave(hba->host->host_lock, flags);
-	if (!hba->clk_scaling.is_suspended) {
-		suspend = true;
-		hba->clk_scaling.is_suspended = true;
-	}
-	spin_unlock_irqrestore(hba->host->host_lock, flags);
-
-	if (suspend)
-		__ufshcd_suspend_clkscaling(hba);
-}
-
-static void ufshcd_resume_clkscaling(struct ufs_hba *hba)
-{
-	unsigned long flags;
-	bool resume = false;
-
-	spin_lock_irqsave(hba->host->host_lock, flags);
-	if (hba->clk_scaling.is_suspended) {
-		resume = true;
-		hba->clk_scaling.is_suspended = false;
-	}
-	spin_unlock_irqrestore(hba->host->host_lock, flags);
-
-	if (resume)
-		devfreq_resume_device(hba->devfreq);
-}
-
-static ssize_t ufshcd_clkscale_enable_show(struct device *dev,
-		struct device_attribute *attr, char *buf)
-{
-	struct ufs_hba *hba = dev_get_drvdata(dev);
-
-	return sysfs_emit(buf, "%d\n", hba->clk_scaling.is_enabled);
-}
-
-static ssize_t ufshcd_clkscale_enable_store(struct device *dev,
-		struct device_attribute *attr, const char *buf, size_t count)
-{
-	struct ufs_hba *hba = dev_get_drvdata(dev);
-	u32 value;
-	int err = 0;
-
-	if (kstrtou32(buf, 0, &value))
-		return -EINVAL;
-
-	down(&hba->host_sem);
-	if (!ufshcd_is_user_access_allowed(hba)) {
-		err = -EBUSY;
-		goto out;
-	}
-
-	value = !!value;
-	if (value == hba->clk_scaling.is_enabled)
-		goto out;
-
-	ufshcd_rpm_get_sync(hba);
-	ufshcd_hold(hba, false);
-
-	hba->clk_scaling.is_enabled = value;
-
-	if (value) {
-		ufshcd_resume_clkscaling(hba);
-	} else {
-		ufshcd_suspend_clkscaling(hba);
-		err = ufshcd_devfreq_scale(hba, true);
-		if (err)
-			dev_err(hba->dev, "%s: failed to scale clocks up %d\n",
-					__func__, err);
-	}
-
-	ufshcd_release(hba);
-	ufshcd_rpm_put_sync(hba);
-out:
-	up(&hba->host_sem);
-	return err ? err : count;
-}
-
-static void ufshcd_init_clk_scaling_sysfs(struct ufs_hba *hba)
-{
-	hba->clk_scaling.enable_attr.show = ufshcd_clkscale_enable_show;
-	hba->clk_scaling.enable_attr.store = ufshcd_clkscale_enable_store;
-	sysfs_attr_init(&hba->clk_scaling.enable_attr.attr);
-	hba->clk_scaling.enable_attr.attr.name = "clkscale_enable";
-	hba->clk_scaling.enable_attr.attr.mode = 0644;
-	if (device_create_file(hba->dev, &hba->clk_scaling.enable_attr))
-		dev_err(hba->dev, "Failed to create sysfs for clkscale_enable\n");
-}
-
-static void ufshcd_remove_clk_scaling_sysfs(struct ufs_hba *hba)
-{
-	if (hba->clk_scaling.enable_attr.attr.name)
-		device_remove_file(hba->dev, &hba->clk_scaling.enable_attr);
-}
-
-static void ufshcd_init_clk_scaling(struct ufs_hba *hba)
-{
-	char wq_name[sizeof("ufs_clkscaling_00")];
-
-	if (!ufshcd_is_clkscaling_supported(hba))
-		return;
-
-	if (!hba->clk_scaling.min_gear)
-		hba->clk_scaling.min_gear = UFS_HS_G1;
-
-	INIT_WORK(&hba->clk_scaling.suspend_work,
-		  ufshcd_clk_scaling_suspend_work);
-	INIT_WORK(&hba->clk_scaling.resume_work,
-		  ufshcd_clk_scaling_resume_work);
-
-	snprintf(wq_name, sizeof(wq_name), "ufs_clkscaling_%d",
-		 hba->host->host_no);
-	hba->clk_scaling.workq = create_singlethread_workqueue(wq_name);
-
-	hba->clk_scaling.is_initialized = true;
-}
-
-static void ufshcd_exit_clk_scaling(struct ufs_hba *hba)
-{
-	if (!hba->clk_scaling.is_initialized)
-		return;
-
-	ufshcd_remove_clk_scaling_sysfs(hba);
-	destroy_workqueue(hba->clk_scaling.workq);
-	ufshcd_devfreq_remove(hba);
-	hba->clk_scaling.is_initialized = false;
-}
-
-static void ufshcd_ungate_work(struct work_struct *work)
-{
-	int ret;
-	unsigned long flags;
-	struct ufs_hba *hba = container_of(work, struct ufs_hba,
-			clk_gating.ungate_work);
-
-	cancel_delayed_work_sync(&hba->clk_gating.gate_work);
-
-	spin_lock_irqsave(hba->host->host_lock, flags);
-	if (hba->clk_gating.state == CLKS_ON) {
-		spin_unlock_irqrestore(hba->host->host_lock, flags);
-		goto unblock_reqs;
-	}
-
-	spin_unlock_irqrestore(hba->host->host_lock, flags);
-	ufshcd_hba_vreg_set_hpm(hba);
-	ufshcd_setup_clocks(hba, true);
-
-	ufshcd_enable_irq(hba);
-
-	/* Exit from hibern8 */
-	if (ufshcd_can_hibern8_during_gating(hba)) {
-		/* Prevent gating in this path */
-		hba->clk_gating.is_suspended = true;
-		if (ufshcd_is_link_hibern8(hba)) {
-			ret = ufshcd_uic_hibern8_exit(hba);
-			if (ret)
-				dev_err(hba->dev, "%s: hibern8 exit failed %d\n",
-					__func__, ret);
-			else
-				ufshcd_set_link_active(hba);
-		}
-		hba->clk_gating.is_suspended = false;
-	}
-unblock_reqs:
-	ufshcd_scsi_unblock_requests(hba);
-}
-
-/**
- * ufshcd_hold - Enable clocks that were gated earlier due to ufshcd_release.
- * Also, exit from hibern8 mode and set the link as active.
- * @hba: per adapter instance
- * @async: This indicates whether caller should ungate clocks asynchronously.
- */
-int ufshcd_hold(struct ufs_hba *hba, bool async)
-{
-	int rc = 0;
-	bool flush_result;
-	unsigned long flags;
-
-	if (!ufshcd_is_clkgating_allowed(hba) ||
-	    !hba->clk_gating.is_initialized)
-		goto out;
-	spin_lock_irqsave(hba->host->host_lock, flags);
-	hba->clk_gating.active_reqs++;
-
-start:
-	switch (hba->clk_gating.state) {
-	case CLKS_ON:
-		/*
-		 * Wait for the ungate work to complete if in progress.
-		 * Though the clocks may be in ON state, the link could
-		 * still be in hibner8 state if hibern8 is allowed
-		 * during clock gating.
-		 * Make sure we exit hibern8 state also in addition to
-		 * clocks being ON.
-		 */
-		if (ufshcd_can_hibern8_during_gating(hba) &&
-		    ufshcd_is_link_hibern8(hba)) {
-			if (async) {
-				rc = -EAGAIN;
-				hba->clk_gating.active_reqs--;
-				break;
-			}
-			spin_unlock_irqrestore(hba->host->host_lock, flags);
-			flush_result = flush_work(&hba->clk_gating.ungate_work);
-			if (hba->clk_gating.is_suspended && !flush_result)
-				goto out;
-			spin_lock_irqsave(hba->host->host_lock, flags);
-			goto start;
-		}
-		break;
-	case REQ_CLKS_OFF:
-		if (cancel_delayed_work(&hba->clk_gating.gate_work)) {
-			hba->clk_gating.state = CLKS_ON;
-			trace_ufshcd_clk_gating(dev_name(hba->dev),
-						hba->clk_gating.state);
-			break;
-		}
-		/*
-		 * If we are here, it means gating work is either done or
-		 * currently running. Hence, fall through to cancel gating
-		 * work and to enable clocks.
-		 */
-		fallthrough;
-	case CLKS_OFF:
-		hba->clk_gating.state = REQ_CLKS_ON;
-		trace_ufshcd_clk_gating(dev_name(hba->dev),
-					hba->clk_gating.state);
-		if (queue_work(hba->clk_gating.clk_gating_workq,
-			       &hba->clk_gating.ungate_work))
-			ufshcd_scsi_block_requests(hba);
-		/*
-		 * fall through to check if we should wait for this
-		 * work to be done or not.
-		 */
-		fallthrough;
-	case REQ_CLKS_ON:
-		if (async) {
-			rc = -EAGAIN;
-			hba->clk_gating.active_reqs--;
-			break;
-		}
-
-		spin_unlock_irqrestore(hba->host->host_lock, flags);
-		flush_work(&hba->clk_gating.ungate_work);
-		/* Make sure state is CLKS_ON before returning */
-		spin_lock_irqsave(hba->host->host_lock, flags);
-		goto start;
-	default:
-		dev_err(hba->dev, "%s: clk gating is in invalid state %d\n",
-				__func__, hba->clk_gating.state);
-		break;
-	}
-	spin_unlock_irqrestore(hba->host->host_lock, flags);
-out:
-	return rc;
-}
-EXPORT_SYMBOL_GPL(ufshcd_hold);
-
-static void ufshcd_gate_work(struct work_struct *work)
-{
-	struct ufs_hba *hba = container_of(work, struct ufs_hba,
-			clk_gating.gate_work.work);
-	unsigned long flags;
-	int ret;
-
-	spin_lock_irqsave(hba->host->host_lock, flags);
-	/*
-	 * In case you are here to cancel this work the gating state
-	 * would be marked as REQ_CLKS_ON. In this case save time by
-	 * skipping the gating work and exit after changing the clock
-	 * state to CLKS_ON.
-	 */
-	if (hba->clk_gating.is_suspended ||
-		(hba->clk_gating.state != REQ_CLKS_OFF)) {
-		hba->clk_gating.state = CLKS_ON;
-		trace_ufshcd_clk_gating(dev_name(hba->dev),
-					hba->clk_gating.state);
-		goto rel_lock;
-	}
-
-	if (hba->clk_gating.active_reqs
-		|| hba->ufshcd_state != UFSHCD_STATE_OPERATIONAL
-		|| hba->outstanding_reqs || hba->outstanding_tasks
-		|| hba->active_uic_cmd || hba->uic_async_done)
-		goto rel_lock;
-
-	spin_unlock_irqrestore(hba->host->host_lock, flags);
-
-	/* put the link into hibern8 mode before turning off clocks */
-	if (ufshcd_can_hibern8_during_gating(hba)) {
-		ret = ufshcd_uic_hibern8_enter(hba);
-		if (ret) {
-			hba->clk_gating.state = CLKS_ON;
-			dev_err(hba->dev, "%s: hibern8 enter failed %d\n",
-					__func__, ret);
-			trace_ufshcd_clk_gating(dev_name(hba->dev),
-						hba->clk_gating.state);
-			goto out;
-		}
-		ufshcd_set_link_hibern8(hba);
-	}
-
-	ufshcd_disable_irq(hba);
-
-	ufshcd_setup_clocks(hba, false);
-
-	/* Put the host controller in low power mode if possible */
-	ufshcd_hba_vreg_set_lpm(hba);
-	/*
-	 * In case you are here to cancel this work the gating state
-	 * would be marked as REQ_CLKS_ON. In this case keep the state
-	 * as REQ_CLKS_ON which would anyway imply that clocks are off
-	 * and a request to turn them on is pending. By doing this way,
-	 * we keep the state machine in tact and this would ultimately
-	 * prevent from doing cancel work multiple times when there are
-	 * new requests arriving before the current cancel work is done.
-	 */
-	spin_lock_irqsave(hba->host->host_lock, flags);
-	if (hba->clk_gating.state == REQ_CLKS_OFF) {
-		hba->clk_gating.state = CLKS_OFF;
-		trace_ufshcd_clk_gating(dev_name(hba->dev),
-					hba->clk_gating.state);
-	}
-rel_lock:
-	spin_unlock_irqrestore(hba->host->host_lock, flags);
-out:
-	return;
-}
-
-/* host lock must be held before calling this variant */
-static void __ufshcd_release(struct ufs_hba *hba)
-{
-	if (!ufshcd_is_clkgating_allowed(hba))
-		return;
-
-	hba->clk_gating.active_reqs--;
-
-	if (hba->clk_gating.active_reqs || hba->clk_gating.is_suspended ||
-	    hba->ufshcd_state != UFSHCD_STATE_OPERATIONAL ||
-	    hba->outstanding_tasks || !hba->clk_gating.is_initialized ||
-	    hba->active_uic_cmd || hba->uic_async_done ||
-	    hba->clk_gating.state == CLKS_OFF)
-		return;
-
-	hba->clk_gating.state = REQ_CLKS_OFF;
-	trace_ufshcd_clk_gating(dev_name(hba->dev), hba->clk_gating.state);
-	queue_delayed_work(hba->clk_gating.clk_gating_workq,
-			   &hba->clk_gating.gate_work,
-			   msecs_to_jiffies(hba->clk_gating.delay_ms));
-}
-
-void ufshcd_release(struct ufs_hba *hba)
-{
-	unsigned long flags;
-
-	spin_lock_irqsave(hba->host->host_lock, flags);
-	__ufshcd_release(hba);
-	spin_unlock_irqrestore(hba->host->host_lock, flags);
-}
-EXPORT_SYMBOL_GPL(ufshcd_release);
-
-static ssize_t ufshcd_clkgate_delay_show(struct device *dev,
-		struct device_attribute *attr, char *buf)
-{
-	struct ufs_hba *hba = dev_get_drvdata(dev);
-
-	return sysfs_emit(buf, "%lu\n", hba->clk_gating.delay_ms);
-}
-
-void ufshcd_clkgate_delay_set(struct device *dev, unsigned long value)
-{
-	struct ufs_hba *hba = dev_get_drvdata(dev);
-	unsigned long flags;
-
-	spin_lock_irqsave(hba->host->host_lock, flags);
-	hba->clk_gating.delay_ms = value;
-	spin_unlock_irqrestore(hba->host->host_lock, flags);
-}
-EXPORT_SYMBOL_GPL(ufshcd_clkgate_delay_set);
-
-static ssize_t ufshcd_clkgate_delay_store(struct device *dev,
-		struct device_attribute *attr, const char *buf, size_t count)
-{
-	unsigned long value;
-
-	if (kstrtoul(buf, 0, &value))
-		return -EINVAL;
-
-	ufshcd_clkgate_delay_set(dev, value);
-	return count;
-}
-
-static ssize_t ufshcd_clkgate_enable_show(struct device *dev,
-		struct device_attribute *attr, char *buf)
-{
-	struct ufs_hba *hba = dev_get_drvdata(dev);
-
-	return sysfs_emit(buf, "%d\n", hba->clk_gating.is_enabled);
-}
-
-static ssize_t ufshcd_clkgate_enable_store(struct device *dev,
-		struct device_attribute *attr, const char *buf, size_t count)
-{
-	struct ufs_hba *hba = dev_get_drvdata(dev);
-	unsigned long flags;
-	u32 value;
-
-	if (kstrtou32(buf, 0, &value))
-		return -EINVAL;
-
-	value = !!value;
-
-	spin_lock_irqsave(hba->host->host_lock, flags);
-	if (value == hba->clk_gating.is_enabled)
-		goto out;
-
-	if (value)
-		__ufshcd_release(hba);
-	else
-		hba->clk_gating.active_reqs++;
-
-	hba->clk_gating.is_enabled = value;
-out:
-	spin_unlock_irqrestore(hba->host->host_lock, flags);
-	return count;
-}
-
-static void ufshcd_init_clk_gating_sysfs(struct ufs_hba *hba)
-{
-	hba->clk_gating.delay_attr.show = ufshcd_clkgate_delay_show;
-	hba->clk_gating.delay_attr.store = ufshcd_clkgate_delay_store;
-	sysfs_attr_init(&hba->clk_gating.delay_attr.attr);
-	hba->clk_gating.delay_attr.attr.name = "clkgate_delay_ms";
-	hba->clk_gating.delay_attr.attr.mode = 0644;
-	if (device_create_file(hba->dev, &hba->clk_gating.delay_attr))
-		dev_err(hba->dev, "Failed to create sysfs for clkgate_delay\n");
-
-	hba->clk_gating.enable_attr.show = ufshcd_clkgate_enable_show;
-	hba->clk_gating.enable_attr.store = ufshcd_clkgate_enable_store;
-	sysfs_attr_init(&hba->clk_gating.enable_attr.attr);
-	hba->clk_gating.enable_attr.attr.name = "clkgate_enable";
-	hba->clk_gating.enable_attr.attr.mode = 0644;
-	if (device_create_file(hba->dev, &hba->clk_gating.enable_attr))
-		dev_err(hba->dev, "Failed to create sysfs for clkgate_enable\n");
-}
-
-static void ufshcd_remove_clk_gating_sysfs(struct ufs_hba *hba)
-{
-	if (hba->clk_gating.delay_attr.attr.name)
-		device_remove_file(hba->dev, &hba->clk_gating.delay_attr);
-	if (hba->clk_gating.enable_attr.attr.name)
-		device_remove_file(hba->dev, &hba->clk_gating.enable_attr);
-}
-
-static void ufshcd_init_clk_gating(struct ufs_hba *hba)
-{
-	char wq_name[sizeof("ufs_clk_gating_00")];
-
-	if (!ufshcd_is_clkgating_allowed(hba))
-		return;
-
-	hba->clk_gating.state = CLKS_ON;
-
-	hba->clk_gating.delay_ms = 150;
-	INIT_DELAYED_WORK(&hba->clk_gating.gate_work, ufshcd_gate_work);
-	INIT_WORK(&hba->clk_gating.ungate_work, ufshcd_ungate_work);
-
-	snprintf(wq_name, ARRAY_SIZE(wq_name), "ufs_clk_gating_%d",
-		 hba->host->host_no);
-	hba->clk_gating.clk_gating_workq = alloc_ordered_workqueue(wq_name,
-					WQ_MEM_RECLAIM | WQ_HIGHPRI);
-
-	ufshcd_init_clk_gating_sysfs(hba);
-
-	hba->clk_gating.is_enabled = true;
-	hba->clk_gating.is_initialized = true;
-}
-
-static void ufshcd_exit_clk_gating(struct ufs_hba *hba)
-{
-	if (!hba->clk_gating.is_initialized)
-		return;
-
-	ufshcd_remove_clk_gating_sysfs(hba);
-
-	/* Ungate the clock if necessary. */
-	ufshcd_hold(hba, false);
-	hba->clk_gating.is_initialized = false;
-	ufshcd_release(hba);
-
-	destroy_workqueue(hba->clk_gating.clk_gating_workq);
-}
-
-/* Must be called with host lock acquired */
-static void ufshcd_clk_scaling_start_busy(struct ufs_hba *hba)
-{
-	bool queue_resume_work = false;
-	ktime_t curr_t = ktime_get();
-	unsigned long flags;
-
-	if (!ufshcd_is_clkscaling_supported(hba))
-		return;
-
-	spin_lock_irqsave(hba->host->host_lock, flags);
-	if (!hba->clk_scaling.active_reqs++)
-		queue_resume_work = true;
-
-	if (!hba->clk_scaling.is_enabled || hba->pm_op_in_progress) {
-		spin_unlock_irqrestore(hba->host->host_lock, flags);
-		return;
-	}
-
-	if (queue_resume_work)
-		queue_work(hba->clk_scaling.workq,
-			   &hba->clk_scaling.resume_work);
-
-	if (!hba->clk_scaling.window_start_t) {
-		hba->clk_scaling.window_start_t = curr_t;
-		hba->clk_scaling.tot_busy_t = 0;
-		hba->clk_scaling.is_busy_started = false;
-	}
-
-	if (!hba->clk_scaling.is_busy_started) {
-		hba->clk_scaling.busy_start_t = curr_t;
-		hba->clk_scaling.is_busy_started = true;
-	}
-	spin_unlock_irqrestore(hba->host->host_lock, flags);
-}
-
-static void ufshcd_clk_scaling_update_busy(struct ufs_hba *hba)
-{
-	struct ufs_clk_scaling *scaling = &hba->clk_scaling;
-	unsigned long flags;
-
-	if (!ufshcd_is_clkscaling_supported(hba))
-		return;
-
-	spin_lock_irqsave(hba->host->host_lock, flags);
-	hba->clk_scaling.active_reqs--;
-	if (!hba->outstanding_reqs && scaling->is_busy_started) {
-		scaling->tot_busy_t += ktime_to_us(ktime_sub(ktime_get(),
-					scaling->busy_start_t));
-		scaling->busy_start_t = 0;
-		scaling->is_busy_started = false;
-	}
-	spin_unlock_irqrestore(hba->host->host_lock, flags);
-}
-
-static inline int ufshcd_monitor_opcode2dir(u8 opcode)
-{
-	if (opcode == READ_6 || opcode == READ_10 || opcode == READ_16)
-		return READ;
-	else if (opcode == WRITE_6 || opcode == WRITE_10 || opcode == WRITE_16)
-		return WRITE;
-	else
-		return -EINVAL;
-}
-
-static inline bool ufshcd_should_inform_monitor(struct ufs_hba *hba,
-						struct ufshcd_lrb *lrbp)
-{
-	struct ufs_hba_monitor *m = &hba->monitor;
-
-	return (m->enabled && lrbp && lrbp->cmd &&
-		(!m->chunk_size || m->chunk_size == lrbp->cmd->sdb.length) &&
-		ktime_before(hba->monitor.enabled_ts, lrbp->issue_time_stamp));
-}
-
-static void ufshcd_start_monitor(struct ufs_hba *hba, struct ufshcd_lrb *lrbp)
-{
-	int dir = ufshcd_monitor_opcode2dir(*lrbp->cmd->cmnd);
-	unsigned long flags;
-
-	spin_lock_irqsave(hba->host->host_lock, flags);
-	if (dir >= 0 && hba->monitor.nr_queued[dir]++ == 0)
-		hba->monitor.busy_start_ts[dir] = ktime_get();
-	spin_unlock_irqrestore(hba->host->host_lock, flags);
-}
-
-static void ufshcd_update_monitor(struct ufs_hba *hba, struct ufshcd_lrb *lrbp)
-{
-	int dir = ufshcd_monitor_opcode2dir(*lrbp->cmd->cmnd);
-	unsigned long flags;
-
-	spin_lock_irqsave(hba->host->host_lock, flags);
-	if (dir >= 0 && hba->monitor.nr_queued[dir] > 0) {
-		struct request *req = scsi_cmd_to_rq(lrbp->cmd);
-		struct ufs_hba_monitor *m = &hba->monitor;
-		ktime_t now, inc, lat;
-
-		now = lrbp->compl_time_stamp;
-		inc = ktime_sub(now, m->busy_start_ts[dir]);
-		m->total_busy[dir] = ktime_add(m->total_busy[dir], inc);
-		m->nr_sec_rw[dir] += blk_rq_sectors(req);
-
-		/* Update latencies */
-		m->nr_req[dir]++;
-		lat = ktime_sub(now, lrbp->issue_time_stamp);
-		m->lat_sum[dir] += lat;
-		if (m->lat_max[dir] < lat || !m->lat_max[dir])
-			m->lat_max[dir] = lat;
-		if (m->lat_min[dir] > lat || !m->lat_min[dir])
-			m->lat_min[dir] = lat;
-
-		m->nr_queued[dir]--;
-		/* Push forward the busy start of monitor */
-		m->busy_start_ts[dir] = now;
-	}
-	spin_unlock_irqrestore(hba->host->host_lock, flags);
-}
-
-/**
- * ufshcd_send_command - Send SCSI or device management commands
- * @hba: per adapter instance
- * @task_tag: Task tag of the command
- */
-static inline
-void ufshcd_send_command(struct ufs_hba *hba, unsigned int task_tag)
-{
-	struct ufshcd_lrb *lrbp = &hba->lrb[task_tag];
-	unsigned long flags;
-
-	lrbp->issue_time_stamp = ktime_get();
-	lrbp->compl_time_stamp = ktime_set(0, 0);
-	ufshcd_add_command_trace(hba, task_tag, UFS_CMD_SEND);
-	ufshcd_clk_scaling_start_busy(hba);
-	if (unlikely(ufshcd_should_inform_monitor(hba, lrbp)))
-		ufshcd_start_monitor(hba, lrbp);
-
-	spin_lock_irqsave(&hba->outstanding_lock, flags);
-	if (hba->vops && hba->vops->setup_xfer_req)
-		hba->vops->setup_xfer_req(hba, task_tag, !!lrbp->cmd);
-	__set_bit(task_tag, &hba->outstanding_reqs);
-	ufshcd_writel(hba, 1 << task_tag, REG_UTP_TRANSFER_REQ_DOOR_BELL);
-	spin_unlock_irqrestore(&hba->outstanding_lock, flags);
-}
-
-/**
- * ufshcd_copy_sense_data - Copy sense data in case of check condition
- * @lrbp: pointer to local reference block
- */
-static inline void ufshcd_copy_sense_data(struct ufshcd_lrb *lrbp)
-{
-	u8 *const sense_buffer = lrbp->cmd->sense_buffer;
-	int len;
-
-	if (sense_buffer &&
-	    ufshcd_get_rsp_upiu_data_seg_len(lrbp->ucd_rsp_ptr)) {
-		int len_to_copy;
-
-		len = be16_to_cpu(lrbp->ucd_rsp_ptr->sr.sense_data_len);
-		len_to_copy = min_t(int, UFS_SENSE_SIZE, len);
-
-		memcpy(sense_buffer, lrbp->ucd_rsp_ptr->sr.sense_data,
-		       len_to_copy);
-	}
-}
-
-/**
- * ufshcd_copy_query_response() - Copy the Query Response and the data
- * descriptor
- * @hba: per adapter instance
- * @lrbp: pointer to local reference block
- */
-static
-int ufshcd_copy_query_response(struct ufs_hba *hba, struct ufshcd_lrb *lrbp)
-{
-	struct ufs_query_res *query_res = &hba->dev_cmd.query.response;
-
-	memcpy(&query_res->upiu_res, &lrbp->ucd_rsp_ptr->qr, QUERY_OSF_SIZE);
-
-	/* Get the descriptor */
-	if (hba->dev_cmd.query.descriptor &&
-	    lrbp->ucd_rsp_ptr->qr.opcode == UPIU_QUERY_OPCODE_READ_DESC) {
-		u8 *descp = (u8 *)lrbp->ucd_rsp_ptr +
-				GENERAL_UPIU_REQUEST_SIZE;
-		u16 resp_len;
-		u16 buf_len;
-
-		/* data segment length */
-		resp_len = be32_to_cpu(lrbp->ucd_rsp_ptr->header.dword_2) &
-						MASK_QUERY_DATA_SEG_LEN;
-		buf_len = be16_to_cpu(
-				hba->dev_cmd.query.request.upiu_req.length);
-		if (likely(buf_len >= resp_len)) {
-			memcpy(hba->dev_cmd.query.descriptor, descp, resp_len);
-		} else {
-			dev_warn(hba->dev,
-				 "%s: rsp size %d is bigger than buffer size %d",
-				 __func__, resp_len, buf_len);
-			return -EINVAL;
-		}
-	}
-
-	return 0;
-}
-
-/**
- * ufshcd_hba_capabilities - Read controller capabilities
- * @hba: per adapter instance
- *
- * Return: 0 on success, negative on error.
- */
-static inline int ufshcd_hba_capabilities(struct ufs_hba *hba)
-{
-	int err;
-
-	hba->capabilities = ufshcd_readl(hba, REG_CONTROLLER_CAPABILITIES);
-
-	/* nutrs and nutmrs are 0 based values */
-	hba->nutrs = (hba->capabilities & MASK_TRANSFER_REQUESTS_SLOTS) + 1;
-	hba->nutmrs =
-	((hba->capabilities & MASK_TASK_MANAGEMENT_REQUEST_SLOTS) >> 16) + 1;
-	hba->reserved_slot = hba->nutrs - 1;
-
-	/* Read crypto capabilities */
-	err = ufshcd_hba_init_crypto_capabilities(hba);
-	if (err)
-		dev_err(hba->dev, "crypto setup failed\n");
-
-	return err;
-}
-
-/**
- * ufshcd_ready_for_uic_cmd - Check if controller is ready
- *                            to accept UIC commands
- * @hba: per adapter instance
- * Return true on success, else false
- */
-static inline bool ufshcd_ready_for_uic_cmd(struct ufs_hba *hba)
-{
-	return ufshcd_readl(hba, REG_CONTROLLER_STATUS) & UIC_COMMAND_READY;
-}
-
-/**
- * ufshcd_get_upmcrs - Get the power mode change request status
- * @hba: Pointer to adapter instance
- *
- * This function gets the UPMCRS field of HCS register
- * Returns value of UPMCRS field
- */
-static inline u8 ufshcd_get_upmcrs(struct ufs_hba *hba)
-{
-	return (ufshcd_readl(hba, REG_CONTROLLER_STATUS) >> 8) & 0x7;
-}
-
-/**
- * ufshcd_dispatch_uic_cmd - Dispatch an UIC command to the Unipro layer
- * @hba: per adapter instance
- * @uic_cmd: UIC command
- */
-static inline void
-ufshcd_dispatch_uic_cmd(struct ufs_hba *hba, struct uic_command *uic_cmd)
-{
-	lockdep_assert_held(&hba->uic_cmd_mutex);
-
-	WARN_ON(hba->active_uic_cmd);
-
-	hba->active_uic_cmd = uic_cmd;
-
-	/* Write Args */
-	ufshcd_writel(hba, uic_cmd->argument1, REG_UIC_COMMAND_ARG_1);
-	ufshcd_writel(hba, uic_cmd->argument2, REG_UIC_COMMAND_ARG_2);
-	ufshcd_writel(hba, uic_cmd->argument3, REG_UIC_COMMAND_ARG_3);
-
-	ufshcd_add_uic_command_trace(hba, uic_cmd, UFS_CMD_SEND);
-
-	/* Write UIC Cmd */
-	ufshcd_writel(hba, uic_cmd->command & COMMAND_OPCODE_MASK,
-		      REG_UIC_COMMAND);
-}
-
-/**
- * ufshcd_wait_for_uic_cmd - Wait for completion of an UIC command
- * @hba: per adapter instance
- * @uic_cmd: UIC command
- *
- * Returns 0 only if success.
- */
-static int
-ufshcd_wait_for_uic_cmd(struct ufs_hba *hba, struct uic_command *uic_cmd)
-{
-	int ret;
-	unsigned long flags;
-
-	lockdep_assert_held(&hba->uic_cmd_mutex);
-
-	if (wait_for_completion_timeout(&uic_cmd->done,
-					msecs_to_jiffies(UIC_CMD_TIMEOUT))) {
-		ret = uic_cmd->argument2 & MASK_UIC_COMMAND_RESULT;
-	} else {
-		ret = -ETIMEDOUT;
-		dev_err(hba->dev,
-			"uic cmd 0x%x with arg3 0x%x completion timeout\n",
-			uic_cmd->command, uic_cmd->argument3);
-
-		if (!uic_cmd->cmd_active) {
-			dev_err(hba->dev, "%s: UIC cmd has been completed, return the result\n",
-				__func__);
-			ret = uic_cmd->argument2 & MASK_UIC_COMMAND_RESULT;
-		}
-	}
-
-	spin_lock_irqsave(hba->host->host_lock, flags);
-	hba->active_uic_cmd = NULL;
-	spin_unlock_irqrestore(hba->host->host_lock, flags);
-
-	return ret;
-}
-
-/**
- * __ufshcd_send_uic_cmd - Send UIC commands and retrieve the result
- * @hba: per adapter instance
- * @uic_cmd: UIC command
- * @completion: initialize the completion only if this is set to true
- *
- * Returns 0 only if success.
- */
-static int
-__ufshcd_send_uic_cmd(struct ufs_hba *hba, struct uic_command *uic_cmd,
-		      bool completion)
-{
-	lockdep_assert_held(&hba->uic_cmd_mutex);
-	lockdep_assert_held(hba->host->host_lock);
-
-	if (!ufshcd_ready_for_uic_cmd(hba)) {
-		dev_err(hba->dev,
-			"Controller not ready to accept UIC commands\n");
-		return -EIO;
-	}
-
-	if (completion)
-		init_completion(&uic_cmd->done);
-
-	uic_cmd->cmd_active = 1;
-	ufshcd_dispatch_uic_cmd(hba, uic_cmd);
-
-	return 0;
-}
-
-/**
- * ufshcd_send_uic_cmd - Send UIC commands and retrieve the result
- * @hba: per adapter instance
- * @uic_cmd: UIC command
- *
- * Returns 0 only if success.
- */
-int ufshcd_send_uic_cmd(struct ufs_hba *hba, struct uic_command *uic_cmd)
-{
-	int ret;
-	unsigned long flags;
-
-	if (hba->quirks & UFSHCD_QUIRK_BROKEN_UIC_CMD)
-		return 0;
-
-	ufshcd_hold(hba, false);
-	mutex_lock(&hba->uic_cmd_mutex);
-	ufshcd_add_delay_before_dme_cmd(hba);
-
-	spin_lock_irqsave(hba->host->host_lock, flags);
-	ret = __ufshcd_send_uic_cmd(hba, uic_cmd, true);
-	spin_unlock_irqrestore(hba->host->host_lock, flags);
-	if (!ret)
-		ret = ufshcd_wait_for_uic_cmd(hba, uic_cmd);
-
-	mutex_unlock(&hba->uic_cmd_mutex);
-
-	ufshcd_release(hba);
-	return ret;
-}
-
-/**
- * ufshcd_map_sg - Map scatter-gather list to prdt
- * @hba: per adapter instance
- * @lrbp: pointer to local reference block
- *
- * Returns 0 in case of success, non-zero value in case of failure
- */
-static int ufshcd_map_sg(struct ufs_hba *hba, struct ufshcd_lrb *lrbp)
-{
-	struct ufshcd_sg_entry *prd_table;
-	struct scatterlist *sg;
-	struct scsi_cmnd *cmd;
-	int sg_segments;
-	int i;
-
-	cmd = lrbp->cmd;
-	sg_segments = scsi_dma_map(cmd);
-	if (sg_segments < 0)
-		return sg_segments;
-
-	if (sg_segments) {
-
-		if (hba->quirks & UFSHCD_QUIRK_PRDT_BYTE_GRAN)
-			lrbp->utr_descriptor_ptr->prd_table_length =
-				cpu_to_le16((sg_segments *
-					sizeof(struct ufshcd_sg_entry)));
-		else
-			lrbp->utr_descriptor_ptr->prd_table_length =
-				cpu_to_le16(sg_segments);
-
-		prd_table = lrbp->ucd_prdt_ptr;
-
-		scsi_for_each_sg(cmd, sg, sg_segments, i) {
-			const unsigned int len = sg_dma_len(sg);
-
-			/*
-			 * From the UFSHCI spec: "Data Byte Count (DBC): A '0'
-			 * based value that indicates the length, in bytes, of
-			 * the data block. A maximum of length of 256KB may
-			 * exist for any entry. Bits 1:0 of this field shall be
-			 * 11b to indicate Dword granularity. A value of '3'
-			 * indicates 4 bytes, '7' indicates 8 bytes, etc."
-			 */
-			WARN_ONCE(len > 256 * 1024, "len = %#x\n", len);
-			prd_table[i].size = cpu_to_le32(len - 1);
-			prd_table[i].addr = cpu_to_le64(sg->dma_address);
-			prd_table[i].reserved = 0;
-		}
-	} else {
-		lrbp->utr_descriptor_ptr->prd_table_length = 0;
-	}
-
-	return 0;
-}
-
-/**
- * ufshcd_enable_intr - enable interrupts
- * @hba: per adapter instance
- * @intrs: interrupt bits
- */
-static void ufshcd_enable_intr(struct ufs_hba *hba, u32 intrs)
-{
-	u32 set = ufshcd_readl(hba, REG_INTERRUPT_ENABLE);
-
-	if (hba->ufs_version == ufshci_version(1, 0)) {
-		u32 rw;
-		rw = set & INTERRUPT_MASK_RW_VER_10;
-		set = rw | ((set ^ intrs) & intrs);
-	} else {
-		set |= intrs;
-	}
-
-	ufshcd_writel(hba, set, REG_INTERRUPT_ENABLE);
-}
-
-/**
- * ufshcd_disable_intr - disable interrupts
- * @hba: per adapter instance
- * @intrs: interrupt bits
- */
-static void ufshcd_disable_intr(struct ufs_hba *hba, u32 intrs)
-{
-	u32 set = ufshcd_readl(hba, REG_INTERRUPT_ENABLE);
-
-	if (hba->ufs_version == ufshci_version(1, 0)) {
-		u32 rw;
-		rw = (set & INTERRUPT_MASK_RW_VER_10) &
-			~(intrs & INTERRUPT_MASK_RW_VER_10);
-		set = rw | ((set & intrs) & ~INTERRUPT_MASK_RW_VER_10);
-
-	} else {
-		set &= ~intrs;
-	}
-
-	ufshcd_writel(hba, set, REG_INTERRUPT_ENABLE);
-}
-
-/**
- * ufshcd_prepare_req_desc_hdr() - Fills the requests header
- * descriptor according to request
- * @lrbp: pointer to local reference block
- * @upiu_flags: flags required in the header
- * @cmd_dir: requests data direction
- */
-static void ufshcd_prepare_req_desc_hdr(struct ufshcd_lrb *lrbp,
-			u8 *upiu_flags, enum dma_data_direction cmd_dir)
-{
-	struct utp_transfer_req_desc *req_desc = lrbp->utr_descriptor_ptr;
-	u32 data_direction;
-	u32 dword_0;
-	u32 dword_1 = 0;
-	u32 dword_3 = 0;
-
-	if (cmd_dir == DMA_FROM_DEVICE) {
-		data_direction = UTP_DEVICE_TO_HOST;
-		*upiu_flags = UPIU_CMD_FLAGS_READ;
-	} else if (cmd_dir == DMA_TO_DEVICE) {
-		data_direction = UTP_HOST_TO_DEVICE;
-		*upiu_flags = UPIU_CMD_FLAGS_WRITE;
-	} else {
-		data_direction = UTP_NO_DATA_TRANSFER;
-		*upiu_flags = UPIU_CMD_FLAGS_NONE;
-	}
-
-	dword_0 = data_direction | (lrbp->command_type
-				<< UPIU_COMMAND_TYPE_OFFSET);
-	if (lrbp->intr_cmd)
-		dword_0 |= UTP_REQ_DESC_INT_CMD;
-
-	/* Prepare crypto related dwords */
-	ufshcd_prepare_req_desc_hdr_crypto(lrbp, &dword_0, &dword_1, &dword_3);
-
-	/* Transfer request descriptor header fields */
-	req_desc->header.dword_0 = cpu_to_le32(dword_0);
-	req_desc->header.dword_1 = cpu_to_le32(dword_1);
-	/*
-	 * assigning invalid value for command status. Controller
-	 * updates OCS on command completion, with the command
-	 * status
-	 */
-	req_desc->header.dword_2 =
-		cpu_to_le32(OCS_INVALID_COMMAND_STATUS);
-	req_desc->header.dword_3 = cpu_to_le32(dword_3);
-
-	req_desc->prd_table_length = 0;
-}
-
-/**
- * ufshcd_prepare_utp_scsi_cmd_upiu() - fills the utp_transfer_req_desc,
- * for scsi commands
- * @lrbp: local reference block pointer
- * @upiu_flags: flags
- */
-static
-void ufshcd_prepare_utp_scsi_cmd_upiu(struct ufshcd_lrb *lrbp, u8 upiu_flags)
-{
-	struct scsi_cmnd *cmd = lrbp->cmd;
-	struct utp_upiu_req *ucd_req_ptr = lrbp->ucd_req_ptr;
-	unsigned short cdb_len;
-
-	/* command descriptor fields */
-	ucd_req_ptr->header.dword_0 = UPIU_HEADER_DWORD(
-				UPIU_TRANSACTION_COMMAND, upiu_flags,
-				lrbp->lun, lrbp->task_tag);
-	ucd_req_ptr->header.dword_1 = UPIU_HEADER_DWORD(
-				UPIU_COMMAND_SET_TYPE_SCSI, 0, 0, 0);
-
-	/* Total EHS length and Data segment length will be zero */
-	ucd_req_ptr->header.dword_2 = 0;
-
-	ucd_req_ptr->sc.exp_data_transfer_len = cpu_to_be32(cmd->sdb.length);
-
-	cdb_len = min_t(unsigned short, cmd->cmd_len, UFS_CDB_SIZE);
-	memset(ucd_req_ptr->sc.cdb, 0, UFS_CDB_SIZE);
-	memcpy(ucd_req_ptr->sc.cdb, cmd->cmnd, cdb_len);
-
-	memset(lrbp->ucd_rsp_ptr, 0, sizeof(struct utp_upiu_rsp));
-}
-
-/**
- * ufshcd_prepare_utp_query_req_upiu() - fills the utp_transfer_req_desc,
- * for query requsts
- * @hba: UFS hba
- * @lrbp: local reference block pointer
- * @upiu_flags: flags
- */
-static void ufshcd_prepare_utp_query_req_upiu(struct ufs_hba *hba,
-				struct ufshcd_lrb *lrbp, u8 upiu_flags)
-{
-	struct utp_upiu_req *ucd_req_ptr = lrbp->ucd_req_ptr;
-	struct ufs_query *query = &hba->dev_cmd.query;
-	u16 len = be16_to_cpu(query->request.upiu_req.length);
-
-	/* Query request header */
-	ucd_req_ptr->header.dword_0 = UPIU_HEADER_DWORD(
-			UPIU_TRANSACTION_QUERY_REQ, upiu_flags,
-			lrbp->lun, lrbp->task_tag);
-	ucd_req_ptr->header.dword_1 = UPIU_HEADER_DWORD(
-			0, query->request.query_func, 0, 0);
-
-	/* Data segment length only need for WRITE_DESC */
-	if (query->request.upiu_req.opcode == UPIU_QUERY_OPCODE_WRITE_DESC)
-		ucd_req_ptr->header.dword_2 =
-			UPIU_HEADER_DWORD(0, 0, (len >> 8), (u8)len);
-	else
-		ucd_req_ptr->header.dword_2 = 0;
-
-	/* Copy the Query Request buffer as is */
-	memcpy(&ucd_req_ptr->qr, &query->request.upiu_req,
-			QUERY_OSF_SIZE);
-
-	/* Copy the Descriptor */
-	if (query->request.upiu_req.opcode == UPIU_QUERY_OPCODE_WRITE_DESC)
-		memcpy(ucd_req_ptr + 1, query->descriptor, len);
-
-	memset(lrbp->ucd_rsp_ptr, 0, sizeof(struct utp_upiu_rsp));
-}
-
-static inline void ufshcd_prepare_utp_nop_upiu(struct ufshcd_lrb *lrbp)
-{
-	struct utp_upiu_req *ucd_req_ptr = lrbp->ucd_req_ptr;
-
-	memset(ucd_req_ptr, 0, sizeof(struct utp_upiu_req));
-
-	/* command descriptor fields */
-	ucd_req_ptr->header.dword_0 =
-		UPIU_HEADER_DWORD(
-			UPIU_TRANSACTION_NOP_OUT, 0, 0, lrbp->task_tag);
-	/* clear rest of the fields of basic header */
-	ucd_req_ptr->header.dword_1 = 0;
-	ucd_req_ptr->header.dword_2 = 0;
-
-	memset(lrbp->ucd_rsp_ptr, 0, sizeof(struct utp_upiu_rsp));
-}
-
-/**
- * ufshcd_compose_devman_upiu - UFS Protocol Information Unit(UPIU)
- *			     for Device Management Purposes
- * @hba: per adapter instance
- * @lrbp: pointer to local reference block
- */
-static int ufshcd_compose_devman_upiu(struct ufs_hba *hba,
-				      struct ufshcd_lrb *lrbp)
-{
-	u8 upiu_flags;
-	int ret = 0;
-
-	if (hba->ufs_version <= ufshci_version(1, 1))
-		lrbp->command_type = UTP_CMD_TYPE_DEV_MANAGE;
-	else
-		lrbp->command_type = UTP_CMD_TYPE_UFS_STORAGE;
-
-	ufshcd_prepare_req_desc_hdr(lrbp, &upiu_flags, DMA_NONE);
-	if (hba->dev_cmd.type == DEV_CMD_TYPE_QUERY)
-		ufshcd_prepare_utp_query_req_upiu(hba, lrbp, upiu_flags);
-	else if (hba->dev_cmd.type == DEV_CMD_TYPE_NOP)
-		ufshcd_prepare_utp_nop_upiu(lrbp);
-	else
-		ret = -EINVAL;
-
-	return ret;
-}
-
-/**
- * ufshcd_comp_scsi_upiu - UFS Protocol Information Unit(UPIU)
- *			   for SCSI Purposes
- * @hba: per adapter instance
- * @lrbp: pointer to local reference block
- */
-static int ufshcd_comp_scsi_upiu(struct ufs_hba *hba, struct ufshcd_lrb *lrbp)
-{
-	u8 upiu_flags;
-	int ret = 0;
-
-	if (hba->ufs_version <= ufshci_version(1, 1))
-		lrbp->command_type = UTP_CMD_TYPE_SCSI;
-	else
-		lrbp->command_type = UTP_CMD_TYPE_UFS_STORAGE;
-
-	if (likely(lrbp->cmd)) {
-		ufshcd_prepare_req_desc_hdr(lrbp, &upiu_flags,
-						lrbp->cmd->sc_data_direction);
-		ufshcd_prepare_utp_scsi_cmd_upiu(lrbp, upiu_flags);
-	} else {
-		ret = -EINVAL;
-	}
-
-	return ret;
-}
-
-/**
- * ufshcd_upiu_wlun_to_scsi_wlun - maps UPIU W-LUN id to SCSI W-LUN ID
- * @upiu_wlun_id: UPIU W-LUN id
- *
- * Returns SCSI W-LUN id
- */
-static inline u16 ufshcd_upiu_wlun_to_scsi_wlun(u8 upiu_wlun_id)
-{
-	return (upiu_wlun_id & ~UFS_UPIU_WLUN_ID) | SCSI_W_LUN_BASE;
-}
-
-static inline bool is_device_wlun(struct scsi_device *sdev)
-{
-	return sdev->lun ==
-		ufshcd_upiu_wlun_to_scsi_wlun(UFS_UPIU_UFS_DEVICE_WLUN);
-}
-
-/*
- * Associate the UFS controller queue with the default and poll HCTX types.
- * Initialize the mq_map[] arrays.
- */
-static int ufshcd_map_queues(struct Scsi_Host *shost)
-{
-	int i, ret;
-
-	for (i = 0; i < shost->nr_maps; i++) {
-		struct blk_mq_queue_map *map = &shost->tag_set.map[i];
-
-		switch (i) {
-		case HCTX_TYPE_DEFAULT:
-		case HCTX_TYPE_POLL:
-			map->nr_queues = 1;
-			break;
-		case HCTX_TYPE_READ:
-			map->nr_queues = 0;
-			continue;
-		default:
-			WARN_ON_ONCE(true);
-		}
-		map->queue_offset = 0;
-		ret = blk_mq_map_queues(map);
-		WARN_ON_ONCE(ret);
-	}
-
-	return 0;
-}
-
-static void ufshcd_init_lrb(struct ufs_hba *hba, struct ufshcd_lrb *lrb, int i)
-{
-	struct utp_transfer_cmd_desc *cmd_descp = hba->ucdl_base_addr;
-	struct utp_transfer_req_desc *utrdlp = hba->utrdl_base_addr;
-	dma_addr_t cmd_desc_element_addr = hba->ucdl_dma_addr +
-		i * sizeof(struct utp_transfer_cmd_desc);
-	u16 response_offset = offsetof(struct utp_transfer_cmd_desc,
-				       response_upiu);
-	u16 prdt_offset = offsetof(struct utp_transfer_cmd_desc, prd_table);
-
-	lrb->utr_descriptor_ptr = utrdlp + i;
-	lrb->utrd_dma_addr = hba->utrdl_dma_addr +
-		i * sizeof(struct utp_transfer_req_desc);
-	lrb->ucd_req_ptr = (struct utp_upiu_req *)(cmd_descp + i);
-	lrb->ucd_req_dma_addr = cmd_desc_element_addr;
-	lrb->ucd_rsp_ptr = (struct utp_upiu_rsp *)cmd_descp[i].response_upiu;
-	lrb->ucd_rsp_dma_addr = cmd_desc_element_addr + response_offset;
-	lrb->ucd_prdt_ptr = cmd_descp[i].prd_table;
-	lrb->ucd_prdt_dma_addr = cmd_desc_element_addr + prdt_offset;
-}
-
-/**
- * ufshcd_queuecommand - main entry point for SCSI requests
- * @host: SCSI host pointer
- * @cmd: command from SCSI Midlayer
- *
- * Returns 0 for success, non-zero in case of failure
- */
-static int ufshcd_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd)
-{
-	struct ufs_hba *hba = shost_priv(host);
-	int tag = scsi_cmd_to_rq(cmd)->tag;
-	struct ufshcd_lrb *lrbp;
-	int err = 0;
-
-	WARN_ONCE(tag < 0 || tag >= hba->nutrs, "Invalid tag %d\n", tag);
-
-	/*
-	 * Allows the UFS error handler to wait for prior ufshcd_queuecommand()
-	 * calls.
-	 */
-	rcu_read_lock();
-
-	switch (hba->ufshcd_state) {
-	case UFSHCD_STATE_OPERATIONAL:
-		break;
-	case UFSHCD_STATE_EH_SCHEDULED_NON_FATAL:
-		/*
-		 * SCSI error handler can call ->queuecommand() while UFS error
-		 * handler is in progress. Error interrupts could change the
-		 * state from UFSHCD_STATE_RESET to
-		 * UFSHCD_STATE_EH_SCHEDULED_NON_FATAL. Prevent requests
-		 * being issued in that case.
-		 */
-		if (ufshcd_eh_in_progress(hba)) {
-			err = SCSI_MLQUEUE_HOST_BUSY;
-			goto out;
-		}
-		break;
-	case UFSHCD_STATE_EH_SCHEDULED_FATAL:
-		/*
-		 * pm_runtime_get_sync() is used at error handling preparation
-		 * stage. If a scsi cmd, e.g. the SSU cmd, is sent from hba's
-		 * PM ops, it can never be finished if we let SCSI layer keep
-		 * retrying it, which gets err handler stuck forever. Neither
-		 * can we let the scsi cmd pass through, because UFS is in bad
-		 * state, the scsi cmd may eventually time out, which will get
-		 * err handler blocked for too long. So, just fail the scsi cmd
-		 * sent from PM ops, err handler can recover PM error anyways.
-		 */
-		if (hba->pm_op_in_progress) {
-			hba->force_reset = true;
-			set_host_byte(cmd, DID_BAD_TARGET);
-			scsi_done(cmd);
-			goto out;
-		}
-		fallthrough;
-	case UFSHCD_STATE_RESET:
-		err = SCSI_MLQUEUE_HOST_BUSY;
-		goto out;
-	case UFSHCD_STATE_ERROR:
-		set_host_byte(cmd, DID_ERROR);
-		scsi_done(cmd);
-		goto out;
-	}
-
-	hba->req_abort_count = 0;
-
-	err = ufshcd_hold(hba, true);
-	if (err) {
-		err = SCSI_MLQUEUE_HOST_BUSY;
-		goto out;
-	}
-	WARN_ON(ufshcd_is_clkgating_allowed(hba) &&
-		(hba->clk_gating.state != CLKS_ON));
-
-	lrbp = &hba->lrb[tag];
-	WARN_ON(lrbp->cmd);
-	lrbp->cmd = cmd;
-	lrbp->task_tag = tag;
-	lrbp->lun = ufshcd_scsi_to_upiu_lun(cmd->device->lun);
-	lrbp->intr_cmd = !ufshcd_is_intr_aggr_allowed(hba);
-
-	ufshcd_prepare_lrbp_crypto(scsi_cmd_to_rq(cmd), lrbp);
-
-	lrbp->req_abort_skip = false;
-
-	ufshpb_prep(hba, lrbp);
-
-	ufshcd_comp_scsi_upiu(hba, lrbp);
-
-	err = ufshcd_map_sg(hba, lrbp);
-	if (err) {
-		lrbp->cmd = NULL;
-		ufshcd_release(hba);
-		goto out;
-	}
-
-	ufshcd_send_command(hba, tag);
-
-out:
-	rcu_read_unlock();
-
-	if (ufs_trigger_eh()) {
-		unsigned long flags;
-
-		spin_lock_irqsave(hba->host->host_lock, flags);
-		ufshcd_schedule_eh_work(hba);
-		spin_unlock_irqrestore(hba->host->host_lock, flags);
-	}
-
-	return err;
-}
-
-static int ufshcd_compose_dev_cmd(struct ufs_hba *hba,
-		struct ufshcd_lrb *lrbp, enum dev_cmd_type cmd_type, int tag)
-{
-	lrbp->cmd = NULL;
-	lrbp->task_tag = tag;
-	lrbp->lun = 0; /* device management cmd is not specific to any LUN */
-	lrbp->intr_cmd = true; /* No interrupt aggregation */
-	ufshcd_prepare_lrbp_crypto(NULL, lrbp);
-	hba->dev_cmd.type = cmd_type;
-
-	return ufshcd_compose_devman_upiu(hba, lrbp);
-}
-
-static int
-ufshcd_clear_cmd(struct ufs_hba *hba, int tag)
-{
-	int err = 0;
-	unsigned long flags;
-	u32 mask = 1 << tag;
-
-	/* clear outstanding transaction before retry */
-	spin_lock_irqsave(hba->host->host_lock, flags);
-	ufshcd_utrl_clear(hba, tag);
-	spin_unlock_irqrestore(hba->host->host_lock, flags);
-
-	/*
-	 * wait for h/w to clear corresponding bit in door-bell.
-	 * max. wait is 1 sec.
-	 */
-	err = ufshcd_wait_for_register(hba,
-			REG_UTP_TRANSFER_REQ_DOOR_BELL,
-			mask, ~mask, 1000, 1000);
-
-	return err;
-}
-
-static int
-ufshcd_check_query_response(struct ufs_hba *hba, struct ufshcd_lrb *lrbp)
-{
-	struct ufs_query_res *query_res = &hba->dev_cmd.query.response;
-
-	/* Get the UPIU response */
-	query_res->response = ufshcd_get_rsp_upiu_result(lrbp->ucd_rsp_ptr) >>
-				UPIU_RSP_CODE_OFFSET;
-	return query_res->response;
-}
-
-/**
- * ufshcd_dev_cmd_completion() - handles device management command responses
- * @hba: per adapter instance
- * @lrbp: pointer to local reference block
- */
-static int
-ufshcd_dev_cmd_completion(struct ufs_hba *hba, struct ufshcd_lrb *lrbp)
-{
-	int resp;
-	int err = 0;
-
-	hba->ufs_stats.last_hibern8_exit_tstamp = ktime_set(0, 0);
-	resp = ufshcd_get_req_rsp(lrbp->ucd_rsp_ptr);
-
-	switch (resp) {
-	case UPIU_TRANSACTION_NOP_IN:
-		if (hba->dev_cmd.type != DEV_CMD_TYPE_NOP) {
-			err = -EINVAL;
-			dev_err(hba->dev, "%s: unexpected response %x\n",
-					__func__, resp);
-		}
-		break;
-	case UPIU_TRANSACTION_QUERY_RSP:
-		err = ufshcd_check_query_response(hba, lrbp);
-		if (!err)
-			err = ufshcd_copy_query_response(hba, lrbp);
-		break;
-	case UPIU_TRANSACTION_REJECT_UPIU:
-		/* TODO: handle Reject UPIU Response */
-		err = -EPERM;
-		dev_err(hba->dev, "%s: Reject UPIU not fully implemented\n",
-				__func__);
-		break;
-	default:
-		err = -EINVAL;
-		dev_err(hba->dev, "%s: Invalid device management cmd response: %x\n",
-				__func__, resp);
-		break;
-	}
-
-	return err;
-}
-
-static int ufshcd_wait_for_dev_cmd(struct ufs_hba *hba,
-		struct ufshcd_lrb *lrbp, int max_timeout)
-{
-	int err = 0;
-	unsigned long time_left;
-	unsigned long flags;
-
-	time_left = wait_for_completion_timeout(hba->dev_cmd.complete,
-			msecs_to_jiffies(max_timeout));
-
-	spin_lock_irqsave(hba->host->host_lock, flags);
-	hba->dev_cmd.complete = NULL;
-	if (likely(time_left)) {
-		err = ufshcd_get_tr_ocs(lrbp);
-		if (!err)
-			err = ufshcd_dev_cmd_completion(hba, lrbp);
-	}
-	spin_unlock_irqrestore(hba->host->host_lock, flags);
-
-	if (!time_left) {
-		err = -ETIMEDOUT;
-		dev_dbg(hba->dev, "%s: dev_cmd request timedout, tag %d\n",
-			__func__, lrbp->task_tag);
-		if (!ufshcd_clear_cmd(hba, lrbp->task_tag))
-			/* successfully cleared the command, retry if needed */
-			err = -EAGAIN;
-		/*
-		 * in case of an error, after clearing the doorbell,
-		 * we also need to clear the outstanding_request
-		 * field in hba
-		 */
-		spin_lock_irqsave(&hba->outstanding_lock, flags);
-		__clear_bit(lrbp->task_tag, &hba->outstanding_reqs);
-		spin_unlock_irqrestore(&hba->outstanding_lock, flags);
-	}
-
-	return err;
-}
-
-/**
- * ufshcd_exec_dev_cmd - API for sending device management requests
- * @hba: UFS hba
- * @cmd_type: specifies the type (NOP, Query...)
- * @timeout: timeout in milliseconds
- *
- * NOTE: Since there is only one available tag for device management commands,
- * it is expected you hold the hba->dev_cmd.lock mutex.
- */
-static int ufshcd_exec_dev_cmd(struct ufs_hba *hba,
-		enum dev_cmd_type cmd_type, int timeout)
-{
-	DECLARE_COMPLETION_ONSTACK(wait);
-	const u32 tag = hba->reserved_slot;
-	struct ufshcd_lrb *lrbp;
-	int err;
-
-	/* Protects use of hba->reserved_slot. */
-	lockdep_assert_held(&hba->dev_cmd.lock);
-
-	down_read(&hba->clk_scaling_lock);
-
-	lrbp = &hba->lrb[tag];
-	WARN_ON(lrbp->cmd);
-	err = ufshcd_compose_dev_cmd(hba, lrbp, cmd_type, tag);
-	if (unlikely(err))
-		goto out;
-
-	hba->dev_cmd.complete = &wait;
-
-	ufshcd_add_query_upiu_trace(hba, UFS_QUERY_SEND, lrbp->ucd_req_ptr);
-
-	ufshcd_send_command(hba, tag);
-	err = ufshcd_wait_for_dev_cmd(hba, lrbp, timeout);
-	ufshcd_add_query_upiu_trace(hba, err ? UFS_QUERY_ERR : UFS_QUERY_COMP,
-				    (struct utp_upiu_req *)lrbp->ucd_rsp_ptr);
-
-out:
-	up_read(&hba->clk_scaling_lock);
-	return err;
-}
-
-/**
- * ufshcd_init_query() - init the query response and request parameters
- * @hba: per-adapter instance
- * @request: address of the request pointer to be initialized
- * @response: address of the response pointer to be initialized
- * @opcode: operation to perform
- * @idn: flag idn to access
- * @index: LU number to access
- * @selector: query/flag/descriptor further identification
- */
-static inline void ufshcd_init_query(struct ufs_hba *hba,
-		struct ufs_query_req **request, struct ufs_query_res **response,
-		enum query_opcode opcode, u8 idn, u8 index, u8 selector)
-{
-	*request = &hba->dev_cmd.query.request;
-	*response = &hba->dev_cmd.query.response;
-	memset(*request, 0, sizeof(struct ufs_query_req));
-	memset(*response, 0, sizeof(struct ufs_query_res));
-	(*request)->upiu_req.opcode = opcode;
-	(*request)->upiu_req.idn = idn;
-	(*request)->upiu_req.index = index;
-	(*request)->upiu_req.selector = selector;
-}
-
-static int ufshcd_query_flag_retry(struct ufs_hba *hba,
-	enum query_opcode opcode, enum flag_idn idn, u8 index, bool *flag_res)
-{
-	int ret;
-	int retries;
-
-	for (retries = 0; retries < QUERY_REQ_RETRIES; retries++) {
-		ret = ufshcd_query_flag(hba, opcode, idn, index, flag_res);
-		if (ret)
-			dev_dbg(hba->dev,
-				"%s: failed with error %d, retries %d\n",
-				__func__, ret, retries);
-		else
-			break;
-	}
-
-	if (ret)
-		dev_err(hba->dev,
-			"%s: query attribute, opcode %d, idn %d, failed with error %d after %d retires\n",
-			__func__, opcode, idn, ret, retries);
-	return ret;
-}
-
-/**
- * ufshcd_query_flag() - API function for sending flag query requests
- * @hba: per-adapter instance
- * @opcode: flag query to perform
- * @idn: flag idn to access
- * @index: flag index to access
- * @flag_res: the flag value after the query request completes
- *
- * Returns 0 for success, non-zero in case of failure
- */
-int ufshcd_query_flag(struct ufs_hba *hba, enum query_opcode opcode,
-			enum flag_idn idn, u8 index, bool *flag_res)
-{
-	struct ufs_query_req *request = NULL;
-	struct ufs_query_res *response = NULL;
-	int err, selector = 0;
-	int timeout = QUERY_REQ_TIMEOUT;
-
-	BUG_ON(!hba);
-
-	ufshcd_hold(hba, false);
-	mutex_lock(&hba->dev_cmd.lock);
-	ufshcd_init_query(hba, &request, &response, opcode, idn, index,
-			selector);
-
-	switch (opcode) {
-	case UPIU_QUERY_OPCODE_SET_FLAG:
-	case UPIU_QUERY_OPCODE_CLEAR_FLAG:
-	case UPIU_QUERY_OPCODE_TOGGLE_FLAG:
-		request->query_func = UPIU_QUERY_FUNC_STANDARD_WRITE_REQUEST;
-		break;
-	case UPIU_QUERY_OPCODE_READ_FLAG:
-		request->query_func = UPIU_QUERY_FUNC_STANDARD_READ_REQUEST;
-		if (!flag_res) {
-			/* No dummy reads */
-			dev_err(hba->dev, "%s: Invalid argument for read request\n",
-					__func__);
-			err = -EINVAL;
-			goto out_unlock;
-		}
-		break;
-	default:
-		dev_err(hba->dev,
-			"%s: Expected query flag opcode but got = %d\n",
-			__func__, opcode);
-		err = -EINVAL;
-		goto out_unlock;
-	}
-
-	err = ufshcd_exec_dev_cmd(hba, DEV_CMD_TYPE_QUERY, timeout);
-
-	if (err) {
-		dev_err(hba->dev,
-			"%s: Sending flag query for idn %d failed, err = %d\n",
-			__func__, idn, err);
-		goto out_unlock;
-	}
-
-	if (flag_res)
-		*flag_res = (be32_to_cpu(response->upiu_res.value) &
-				MASK_QUERY_UPIU_FLAG_LOC) & 0x1;
-
-out_unlock:
-	mutex_unlock(&hba->dev_cmd.lock);
-	ufshcd_release(hba);
-	return err;
-}
-
-/**
- * ufshcd_query_attr - API function for sending attribute requests
- * @hba: per-adapter instance
- * @opcode: attribute opcode
- * @idn: attribute idn to access
- * @index: index field
- * @selector: selector field
- * @attr_val: the attribute value after the query request completes
- *
- * Returns 0 for success, non-zero in case of failure
-*/
-int ufshcd_query_attr(struct ufs_hba *hba, enum query_opcode opcode,
-		      enum attr_idn idn, u8 index, u8 selector, u32 *attr_val)
-{
-	struct ufs_query_req *request = NULL;
-	struct ufs_query_res *response = NULL;
-	int err;
-
-	BUG_ON(!hba);
-
-	if (!attr_val) {
-		dev_err(hba->dev, "%s: attribute value required for opcode 0x%x\n",
-				__func__, opcode);
-		return -EINVAL;
-	}
-
-	ufshcd_hold(hba, false);
-
-	mutex_lock(&hba->dev_cmd.lock);
-	ufshcd_init_query(hba, &request, &response, opcode, idn, index,
-			selector);
-
-	switch (opcode) {
-	case UPIU_QUERY_OPCODE_WRITE_ATTR:
-		request->query_func = UPIU_QUERY_FUNC_STANDARD_WRITE_REQUEST;
-		request->upiu_req.value = cpu_to_be32(*attr_val);
-		break;
-	case UPIU_QUERY_OPCODE_READ_ATTR:
-		request->query_func = UPIU_QUERY_FUNC_STANDARD_READ_REQUEST;
-		break;
-	default:
-		dev_err(hba->dev, "%s: Expected query attr opcode but got = 0x%.2x\n",
-				__func__, opcode);
-		err = -EINVAL;
-		goto out_unlock;
-	}
-
-	err = ufshcd_exec_dev_cmd(hba, DEV_CMD_TYPE_QUERY, QUERY_REQ_TIMEOUT);
-
-	if (err) {
-		dev_err(hba->dev, "%s: opcode 0x%.2x for idn %d failed, index %d, err = %d\n",
-				__func__, opcode, idn, index, err);
-		goto out_unlock;
-	}
-
-	*attr_val = be32_to_cpu(response->upiu_res.value);
-
-out_unlock:
-	mutex_unlock(&hba->dev_cmd.lock);
-	ufshcd_release(hba);
-	return err;
-}
-
-/**
- * ufshcd_query_attr_retry() - API function for sending query
- * attribute with retries
- * @hba: per-adapter instance
- * @opcode: attribute opcode
- * @idn: attribute idn to access
- * @index: index field
- * @selector: selector field
- * @attr_val: the attribute value after the query request
- * completes
- *
- * Returns 0 for success, non-zero in case of failure
-*/
-int ufshcd_query_attr_retry(struct ufs_hba *hba,
-	enum query_opcode opcode, enum attr_idn idn, u8 index, u8 selector,
-	u32 *attr_val)
-{
-	int ret = 0;
-	u32 retries;
-
-	for (retries = QUERY_REQ_RETRIES; retries > 0; retries--) {
-		ret = ufshcd_query_attr(hba, opcode, idn, index,
-						selector, attr_val);
-		if (ret)
-			dev_dbg(hba->dev, "%s: failed with error %d, retries %d\n",
-				__func__, ret, retries);
-		else
-			break;
-	}
-
-	if (ret)
-		dev_err(hba->dev,
-			"%s: query attribute, idn %d, failed with error %d after %d retires\n",
-			__func__, idn, ret, QUERY_REQ_RETRIES);
-	return ret;
-}
-
-static int __ufshcd_query_descriptor(struct ufs_hba *hba,
-			enum query_opcode opcode, enum desc_idn idn, u8 index,
-			u8 selector, u8 *desc_buf, int *buf_len)
-{
-	struct ufs_query_req *request = NULL;
-	struct ufs_query_res *response = NULL;
-	int err;
-
-	BUG_ON(!hba);
-
-	if (!desc_buf) {
-		dev_err(hba->dev, "%s: descriptor buffer required for opcode 0x%x\n",
-				__func__, opcode);
-		return -EINVAL;
-	}
-
-	if (*buf_len < QUERY_DESC_MIN_SIZE || *buf_len > QUERY_DESC_MAX_SIZE) {
-		dev_err(hba->dev, "%s: descriptor buffer size (%d) is out of range\n",
-				__func__, *buf_len);
-		return -EINVAL;
-	}
-
-	ufshcd_hold(hba, false);
-
-	mutex_lock(&hba->dev_cmd.lock);
-	ufshcd_init_query(hba, &request, &response, opcode, idn, index,
-			selector);
-	hba->dev_cmd.query.descriptor = desc_buf;
-	request->upiu_req.length = cpu_to_be16(*buf_len);
-
-	switch (opcode) {
-	case UPIU_QUERY_OPCODE_WRITE_DESC:
-		request->query_func = UPIU_QUERY_FUNC_STANDARD_WRITE_REQUEST;
-		break;
-	case UPIU_QUERY_OPCODE_READ_DESC:
-		request->query_func = UPIU_QUERY_FUNC_STANDARD_READ_REQUEST;
-		break;
-	default:
-		dev_err(hba->dev,
-				"%s: Expected query descriptor opcode but got = 0x%.2x\n",
-				__func__, opcode);
-		err = -EINVAL;
-		goto out_unlock;
-	}
-
-	err = ufshcd_exec_dev_cmd(hba, DEV_CMD_TYPE_QUERY, QUERY_REQ_TIMEOUT);
-
-	if (err) {
-		dev_err(hba->dev, "%s: opcode 0x%.2x for idn %d failed, index %d, err = %d\n",
-				__func__, opcode, idn, index, err);
-		goto out_unlock;
-	}
-
-	*buf_len = be16_to_cpu(response->upiu_res.length);
-
-out_unlock:
-	hba->dev_cmd.query.descriptor = NULL;
-	mutex_unlock(&hba->dev_cmd.lock);
-	ufshcd_release(hba);
-	return err;
-}
-
-/**
- * ufshcd_query_descriptor_retry - API function for sending descriptor requests
- * @hba: per-adapter instance
- * @opcode: attribute opcode
- * @idn: attribute idn to access
- * @index: index field
- * @selector: selector field
- * @desc_buf: the buffer that contains the descriptor
- * @buf_len: length parameter passed to the device
- *
- * Returns 0 for success, non-zero in case of failure.
- * The buf_len parameter will contain, on return, the length parameter
- * received on the response.
- */
-int ufshcd_query_descriptor_retry(struct ufs_hba *hba,
-				  enum query_opcode opcode,
-				  enum desc_idn idn, u8 index,
-				  u8 selector,
-				  u8 *desc_buf, int *buf_len)
-{
-	int err;
-	int retries;
-
-	for (retries = QUERY_REQ_RETRIES; retries > 0; retries--) {
-		err = __ufshcd_query_descriptor(hba, opcode, idn, index,
-						selector, desc_buf, buf_len);
-		if (!err || err == -EINVAL)
-			break;
-	}
-
-	return err;
-}
-
-/**
- * ufshcd_map_desc_id_to_length - map descriptor IDN to its length
- * @hba: Pointer to adapter instance
- * @desc_id: descriptor idn value
- * @desc_len: mapped desc length (out)
- */
-void ufshcd_map_desc_id_to_length(struct ufs_hba *hba, enum desc_idn desc_id,
-				  int *desc_len)
-{
-	if (desc_id >= QUERY_DESC_IDN_MAX || desc_id == QUERY_DESC_IDN_RFU_0 ||
-	    desc_id == QUERY_DESC_IDN_RFU_1)
-		*desc_len = 0;
-	else
-		*desc_len = hba->desc_size[desc_id];
-}
-EXPORT_SYMBOL(ufshcd_map_desc_id_to_length);
-
-static void ufshcd_update_desc_length(struct ufs_hba *hba,
-				      enum desc_idn desc_id, int desc_index,
-				      unsigned char desc_len)
-{
-	if (hba->desc_size[desc_id] == QUERY_DESC_MAX_SIZE &&
-	    desc_id != QUERY_DESC_IDN_STRING && desc_index != UFS_RPMB_UNIT)
-		/* For UFS 3.1, the normal unit descriptor is 10 bytes larger
-		 * than the RPMB unit, however, both descriptors share the same
-		 * desc_idn, to cover both unit descriptors with one length, we
-		 * choose the normal unit descriptor length by desc_index.
-		 */
-		hba->desc_size[desc_id] = desc_len;
-}
-
-/**
- * ufshcd_read_desc_param - read the specified descriptor parameter
- * @hba: Pointer to adapter instance
- * @desc_id: descriptor idn value
- * @desc_index: descriptor index
- * @param_offset: offset of the parameter to read
- * @param_read_buf: pointer to buffer where parameter would be read
- * @param_size: sizeof(param_read_buf)
- *
- * Return 0 in case of success, non-zero otherwise
- */
-int ufshcd_read_desc_param(struct ufs_hba *hba,
-			   enum desc_idn desc_id,
-			   int desc_index,
-			   u8 param_offset,
-			   u8 *param_read_buf,
-			   u8 param_size)
-{
-	int ret;
-	u8 *desc_buf;
-	int buff_len;
-	bool is_kmalloc = true;
-
-	/* Safety check */
-	if (desc_id >= QUERY_DESC_IDN_MAX || !param_size)
-		return -EINVAL;
-
-	/* Get the length of descriptor */
-	ufshcd_map_desc_id_to_length(hba, desc_id, &buff_len);
-	if (!buff_len) {
-		dev_err(hba->dev, "%s: Failed to get desc length\n", __func__);
-		return -EINVAL;
-	}
-
-	if (param_offset >= buff_len) {
-		dev_err(hba->dev, "%s: Invalid offset 0x%x in descriptor IDN 0x%x, length 0x%x\n",
-			__func__, param_offset, desc_id, buff_len);
-		return -EINVAL;
-	}
-
-	/* Check whether we need temp memory */
-	if (param_offset != 0 || param_size < buff_len) {
-		desc_buf = kzalloc(buff_len, GFP_KERNEL);
-		if (!desc_buf)
-			return -ENOMEM;
-	} else {
-		desc_buf = param_read_buf;
-		is_kmalloc = false;
-	}
-
-	/* Request for full descriptor */
-	ret = ufshcd_query_descriptor_retry(hba, UPIU_QUERY_OPCODE_READ_DESC,
-					desc_id, desc_index, 0,
-					desc_buf, &buff_len);
-
-	if (ret) {
-		dev_err(hba->dev, "%s: Failed reading descriptor. desc_id %d, desc_index %d, param_offset %d, ret %d\n",
-			__func__, desc_id, desc_index, param_offset, ret);
-		goto out;
-	}
-
-	/* Sanity check */
-	if (desc_buf[QUERY_DESC_DESC_TYPE_OFFSET] != desc_id) {
-		dev_err(hba->dev, "%s: invalid desc_id %d in descriptor header\n",
-			__func__, desc_buf[QUERY_DESC_DESC_TYPE_OFFSET]);
-		ret = -EINVAL;
-		goto out;
-	}
-
-	/* Update descriptor length */
-	buff_len = desc_buf[QUERY_DESC_LENGTH_OFFSET];
-	ufshcd_update_desc_length(hba, desc_id, desc_index, buff_len);
-
-	if (is_kmalloc) {
-		/* Make sure we don't copy more data than available */
-		if (param_offset >= buff_len)
-			ret = -EINVAL;
-		else
-			memcpy(param_read_buf, &desc_buf[param_offset],
-			       min_t(u32, param_size, buff_len - param_offset));
-	}
-out:
-	if (is_kmalloc)
-		kfree(desc_buf);
-	return ret;
-}
-
-/**
- * struct uc_string_id - unicode string
- *
- * @len: size of this descriptor inclusive
- * @type: descriptor type
- * @uc: unicode string character
- */
-struct uc_string_id {
-	u8 len;
-	u8 type;
-	wchar_t uc[];
-} __packed;
-
-/* replace non-printable or non-ASCII characters with spaces */
-static inline char ufshcd_remove_non_printable(u8 ch)
-{
-	return (ch >= 0x20 && ch <= 0x7e) ? ch : ' ';
-}
-
-/**
- * ufshcd_read_string_desc - read string descriptor
- * @hba: pointer to adapter instance
- * @desc_index: descriptor index
- * @buf: pointer to buffer where descriptor would be read,
- *       the caller should free the memory.
- * @ascii: if true convert from unicode to ascii characters
- *         null terminated string.
- *
- * Return:
- * *      string size on success.
- * *      -ENOMEM: on allocation failure
- * *      -EINVAL: on a wrong parameter
- */
-int ufshcd_read_string_desc(struct ufs_hba *hba, u8 desc_index,
-			    u8 **buf, bool ascii)
-{
-	struct uc_string_id *uc_str;
-	u8 *str;
-	int ret;
-
-	if (!buf)
-		return -EINVAL;
-
-	uc_str = kzalloc(QUERY_DESC_MAX_SIZE, GFP_KERNEL);
-	if (!uc_str)
-		return -ENOMEM;
-
-	ret = ufshcd_read_desc_param(hba, QUERY_DESC_IDN_STRING, desc_index, 0,
-				     (u8 *)uc_str, QUERY_DESC_MAX_SIZE);
-	if (ret < 0) {
-		dev_err(hba->dev, "Reading String Desc failed after %d retries. err = %d\n",
-			QUERY_REQ_RETRIES, ret);
-		str = NULL;
-		goto out;
-	}
-
-	if (uc_str->len <= QUERY_DESC_HDR_SIZE) {
-		dev_dbg(hba->dev, "String Desc is of zero length\n");
-		str = NULL;
-		ret = 0;
-		goto out;
-	}
-
-	if (ascii) {
-		ssize_t ascii_len;
-		int i;
-		/* remove header and divide by 2 to move from UTF16 to UTF8 */
-		ascii_len = (uc_str->len - QUERY_DESC_HDR_SIZE) / 2 + 1;
-		str = kzalloc(ascii_len, GFP_KERNEL);
-		if (!str) {
-			ret = -ENOMEM;
-			goto out;
-		}
-
-		/*
-		 * the descriptor contains string in UTF16 format
-		 * we need to convert to utf-8 so it can be displayed
-		 */
-		ret = utf16s_to_utf8s(uc_str->uc,
-				      uc_str->len - QUERY_DESC_HDR_SIZE,
-				      UTF16_BIG_ENDIAN, str, ascii_len);
-
-		/* replace non-printable or non-ASCII characters with spaces */
-		for (i = 0; i < ret; i++)
-			str[i] = ufshcd_remove_non_printable(str[i]);
-
-		str[ret++] = '\0';
-
-	} else {
-		str = kmemdup(uc_str, uc_str->len, GFP_KERNEL);
-		if (!str) {
-			ret = -ENOMEM;
-			goto out;
-		}
-		ret = uc_str->len;
-	}
-out:
-	*buf = str;
-	kfree(uc_str);
-	return ret;
-}
-
-/**
- * ufshcd_read_unit_desc_param - read the specified unit descriptor parameter
- * @hba: Pointer to adapter instance
- * @lun: lun id
- * @param_offset: offset of the parameter to read
- * @param_read_buf: pointer to buffer where parameter would be read
- * @param_size: sizeof(param_read_buf)
- *
- * Return 0 in case of success, non-zero otherwise
- */
-static inline int ufshcd_read_unit_desc_param(struct ufs_hba *hba,
-					      int lun,
-					      enum unit_desc_param param_offset,
-					      u8 *param_read_buf,
-					      u32 param_size)
-{
-	/*
-	 * Unit descriptors are only available for general purpose LUs (LUN id
-	 * from 0 to 7) and RPMB Well known LU.
-	 */
-	if (!ufs_is_valid_unit_desc_lun(&hba->dev_info, lun, param_offset))
-		return -EOPNOTSUPP;
-
-	return ufshcd_read_desc_param(hba, QUERY_DESC_IDN_UNIT, lun,
-				      param_offset, param_read_buf, param_size);
-}
-
-static int ufshcd_get_ref_clk_gating_wait(struct ufs_hba *hba)
-{
-	int err = 0;
-	u32 gating_wait = UFSHCD_REF_CLK_GATING_WAIT_US;
-
-	if (hba->dev_info.wspecversion >= 0x300) {
-		err = ufshcd_query_attr_retry(hba, UPIU_QUERY_OPCODE_READ_ATTR,
-				QUERY_ATTR_IDN_REF_CLK_GATING_WAIT_TIME, 0, 0,
-				&gating_wait);
-		if (err)
-			dev_err(hba->dev, "Failed reading bRefClkGatingWait. err = %d, use default %uus\n",
-					 err, gating_wait);
-
-		if (gating_wait == 0) {
-			gating_wait = UFSHCD_REF_CLK_GATING_WAIT_US;
-			dev_err(hba->dev, "Undefined ref clk gating wait time, use default %uus\n",
-					 gating_wait);
-		}
-
-		hba->dev_info.clk_gating_wait_us = gating_wait;
-	}
-
-	return err;
-}
-
-/**
- * ufshcd_memory_alloc - allocate memory for host memory space data structures
- * @hba: per adapter instance
- *
- * 1. Allocate DMA memory for Command Descriptor array
- *	Each command descriptor consist of Command UPIU, Response UPIU and PRDT
- * 2. Allocate DMA memory for UTP Transfer Request Descriptor List (UTRDL).
- * 3. Allocate DMA memory for UTP Task Management Request Descriptor List
- *	(UTMRDL)
- * 4. Allocate memory for local reference block(lrb).
- *
- * Returns 0 for success, non-zero in case of failure
- */
-static int ufshcd_memory_alloc(struct ufs_hba *hba)
-{
-	size_t utmrdl_size, utrdl_size, ucdl_size;
-
-	/* Allocate memory for UTP command descriptors */
-	ucdl_size = (sizeof(struct utp_transfer_cmd_desc) * hba->nutrs);
-	hba->ucdl_base_addr = dmam_alloc_coherent(hba->dev,
-						  ucdl_size,
-						  &hba->ucdl_dma_addr,
-						  GFP_KERNEL);
-
-	/*
-	 * UFSHCI requires UTP command descriptor to be 128 byte aligned.
-	 * make sure hba->ucdl_dma_addr is aligned to PAGE_SIZE
-	 * if hba->ucdl_dma_addr is aligned to PAGE_SIZE, then it will
-	 * be aligned to 128 bytes as well
-	 */
-	if (!hba->ucdl_base_addr ||
-	    WARN_ON(hba->ucdl_dma_addr & (PAGE_SIZE - 1))) {
-		dev_err(hba->dev,
-			"Command Descriptor Memory allocation failed\n");
-		goto out;
-	}
-
-	/*
-	 * Allocate memory for UTP Transfer descriptors
-	 * UFSHCI requires 1024 byte alignment of UTRD
-	 */
-	utrdl_size = (sizeof(struct utp_transfer_req_desc) * hba->nutrs);
-	hba->utrdl_base_addr = dmam_alloc_coherent(hba->dev,
-						   utrdl_size,
-						   &hba->utrdl_dma_addr,
-						   GFP_KERNEL);
-	if (!hba->utrdl_base_addr ||
-	    WARN_ON(hba->utrdl_dma_addr & (PAGE_SIZE - 1))) {
-		dev_err(hba->dev,
-			"Transfer Descriptor Memory allocation failed\n");
-		goto out;
-	}
-
-	/*
-	 * Allocate memory for UTP Task Management descriptors
-	 * UFSHCI requires 1024 byte alignment of UTMRD
-	 */
-	utmrdl_size = sizeof(struct utp_task_req_desc) * hba->nutmrs;
-	hba->utmrdl_base_addr = dmam_alloc_coherent(hba->dev,
-						    utmrdl_size,
-						    &hba->utmrdl_dma_addr,
-						    GFP_KERNEL);
-	if (!hba->utmrdl_base_addr ||
-	    WARN_ON(hba->utmrdl_dma_addr & (PAGE_SIZE - 1))) {
-		dev_err(hba->dev,
-		"Task Management Descriptor Memory allocation failed\n");
-		goto out;
-	}
-
-	/* Allocate memory for local reference block */
-	hba->lrb = devm_kcalloc(hba->dev,
-				hba->nutrs, sizeof(struct ufshcd_lrb),
-				GFP_KERNEL);
-	if (!hba->lrb) {
-		dev_err(hba->dev, "LRB Memory allocation failed\n");
-		goto out;
-	}
-	return 0;
-out:
-	return -ENOMEM;
-}
-
-/**
- * ufshcd_host_memory_configure - configure local reference block with
- *				memory offsets
- * @hba: per adapter instance
- *
- * Configure Host memory space
- * 1. Update Corresponding UTRD.UCDBA and UTRD.UCDBAU with UCD DMA
- * address.
- * 2. Update each UTRD with Response UPIU offset, Response UPIU length
- * and PRDT offset.
- * 3. Save the corresponding addresses of UTRD, UCD.CMD, UCD.RSP and UCD.PRDT
- * into local reference block.
- */
-static void ufshcd_host_memory_configure(struct ufs_hba *hba)
-{
-	struct utp_transfer_req_desc *utrdlp;
-	dma_addr_t cmd_desc_dma_addr;
-	dma_addr_t cmd_desc_element_addr;
-	u16 response_offset;
-	u16 prdt_offset;
-	int cmd_desc_size;
-	int i;
-
-	utrdlp = hba->utrdl_base_addr;
-
-	response_offset =
-		offsetof(struct utp_transfer_cmd_desc, response_upiu);
-	prdt_offset =
-		offsetof(struct utp_transfer_cmd_desc, prd_table);
-
-	cmd_desc_size = sizeof(struct utp_transfer_cmd_desc);
-	cmd_desc_dma_addr = hba->ucdl_dma_addr;
-
-	for (i = 0; i < hba->nutrs; i++) {
-		/* Configure UTRD with command descriptor base address */
-		cmd_desc_element_addr =
-				(cmd_desc_dma_addr + (cmd_desc_size * i));
-		utrdlp[i].command_desc_base_addr_lo =
-				cpu_to_le32(lower_32_bits(cmd_desc_element_addr));
-		utrdlp[i].command_desc_base_addr_hi =
-				cpu_to_le32(upper_32_bits(cmd_desc_element_addr));
-
-		/* Response upiu and prdt offset should be in double words */
-		if (hba->quirks & UFSHCD_QUIRK_PRDT_BYTE_GRAN) {
-			utrdlp[i].response_upiu_offset =
-				cpu_to_le16(response_offset);
-			utrdlp[i].prd_table_offset =
-				cpu_to_le16(prdt_offset);
-			utrdlp[i].response_upiu_length =
-				cpu_to_le16(ALIGNED_UPIU_SIZE);
-		} else {
-			utrdlp[i].response_upiu_offset =
-				cpu_to_le16(response_offset >> 2);
-			utrdlp[i].prd_table_offset =
-				cpu_to_le16(prdt_offset >> 2);
-			utrdlp[i].response_upiu_length =
-				cpu_to_le16(ALIGNED_UPIU_SIZE >> 2);
-		}
-
-		ufshcd_init_lrb(hba, &hba->lrb[i], i);
-	}
-}
-
-/**
- * ufshcd_dme_link_startup - Notify Unipro to perform link startup
- * @hba: per adapter instance
- *
- * UIC_CMD_DME_LINK_STARTUP command must be issued to Unipro layer,
- * in order to initialize the Unipro link startup procedure.
- * Once the Unipro links are up, the device connected to the controller
- * is detected.
- *
- * Returns 0 on success, non-zero value on failure
- */
-static int ufshcd_dme_link_startup(struct ufs_hba *hba)
-{
-	struct uic_command uic_cmd = {0};
-	int ret;
-
-	uic_cmd.command = UIC_CMD_DME_LINK_STARTUP;
-
-	ret = ufshcd_send_uic_cmd(hba, &uic_cmd);
-	if (ret)
-		dev_dbg(hba->dev,
-			"dme-link-startup: error code %d\n", ret);
-	return ret;
-}
-/**
- * ufshcd_dme_reset - UIC command for DME_RESET
- * @hba: per adapter instance
- *
- * DME_RESET command is issued in order to reset UniPro stack.
- * This function now deals with cold reset.
- *
- * Returns 0 on success, non-zero value on failure
- */
-static int ufshcd_dme_reset(struct ufs_hba *hba)
-{
-	struct uic_command uic_cmd = {0};
-	int ret;
-
-	uic_cmd.command = UIC_CMD_DME_RESET;
-
-	ret = ufshcd_send_uic_cmd(hba, &uic_cmd);
-	if (ret)
-		dev_err(hba->dev,
-			"dme-reset: error code %d\n", ret);
-
-	return ret;
-}
-
-int ufshcd_dme_configure_adapt(struct ufs_hba *hba,
-			       int agreed_gear,
-			       int adapt_val)
-{
-	int ret;
-
-	if (agreed_gear != UFS_HS_G4)
-		adapt_val = PA_NO_ADAPT;
-
-	ret = ufshcd_dme_set(hba,
-			     UIC_ARG_MIB(PA_TXHSADAPTTYPE),
-			     adapt_val);
-	return ret;
-}
-EXPORT_SYMBOL_GPL(ufshcd_dme_configure_adapt);
-
-/**
- * ufshcd_dme_enable - UIC command for DME_ENABLE
- * @hba: per adapter instance
- *
- * DME_ENABLE command is issued in order to enable UniPro stack.
- *
- * Returns 0 on success, non-zero value on failure
- */
-static int ufshcd_dme_enable(struct ufs_hba *hba)
-{
-	struct uic_command uic_cmd = {0};
-	int ret;
-
-	uic_cmd.command = UIC_CMD_DME_ENABLE;
-
-	ret = ufshcd_send_uic_cmd(hba, &uic_cmd);
-	if (ret)
-		dev_err(hba->dev,
-			"dme-enable: error code %d\n", ret);
-
-	return ret;
-}
-
-static inline void ufshcd_add_delay_before_dme_cmd(struct ufs_hba *hba)
-{
-	#define MIN_DELAY_BEFORE_DME_CMDS_US	1000
-	unsigned long min_sleep_time_us;
-
-	if (!(hba->quirks & UFSHCD_QUIRK_DELAY_BEFORE_DME_CMDS))
-		return;
-
-	/*
-	 * last_dme_cmd_tstamp will be 0 only for 1st call to
-	 * this function
-	 */
-	if (unlikely(!ktime_to_us(hba->last_dme_cmd_tstamp))) {
-		min_sleep_time_us = MIN_DELAY_BEFORE_DME_CMDS_US;
-	} else {
-		unsigned long delta =
-			(unsigned long) ktime_to_us(
-				ktime_sub(ktime_get(),
-				hba->last_dme_cmd_tstamp));
-
-		if (delta < MIN_DELAY_BEFORE_DME_CMDS_US)
-			min_sleep_time_us =
-				MIN_DELAY_BEFORE_DME_CMDS_US - delta;
-		else
-			return; /* no more delay required */
-	}
-
-	/* allow sleep for extra 50us if needed */
-	usleep_range(min_sleep_time_us, min_sleep_time_us + 50);
-}
-
-/**
- * ufshcd_dme_set_attr - UIC command for DME_SET, DME_PEER_SET
- * @hba: per adapter instance
- * @attr_sel: uic command argument1
- * @attr_set: attribute set type as uic command argument2
- * @mib_val: setting value as uic command argument3
- * @peer: indicate whether peer or local
- *
- * Returns 0 on success, non-zero value on failure
- */
-int ufshcd_dme_set_attr(struct ufs_hba *hba, u32 attr_sel,
-			u8 attr_set, u32 mib_val, u8 peer)
-{
-	struct uic_command uic_cmd = {0};
-	static const char *const action[] = {
-		"dme-set",
-		"dme-peer-set"
-	};
-	const char *set = action[!!peer];
-	int ret;
-	int retries = UFS_UIC_COMMAND_RETRIES;
-
-	uic_cmd.command = peer ?
-		UIC_CMD_DME_PEER_SET : UIC_CMD_DME_SET;
-	uic_cmd.argument1 = attr_sel;
-	uic_cmd.argument2 = UIC_ARG_ATTR_TYPE(attr_set);
-	uic_cmd.argument3 = mib_val;
-
-	do {
-		/* for peer attributes we retry upon failure */
-		ret = ufshcd_send_uic_cmd(hba, &uic_cmd);
-		if (ret)
-			dev_dbg(hba->dev, "%s: attr-id 0x%x val 0x%x error code %d\n",
-				set, UIC_GET_ATTR_ID(attr_sel), mib_val, ret);
-	} while (ret && peer && --retries);
-
-	if (ret)
-		dev_err(hba->dev, "%s: attr-id 0x%x val 0x%x failed %d retries\n",
-			set, UIC_GET_ATTR_ID(attr_sel), mib_val,
-			UFS_UIC_COMMAND_RETRIES - retries);
-
-	return ret;
-}
-EXPORT_SYMBOL_GPL(ufshcd_dme_set_attr);
-
-/**
- * ufshcd_dme_get_attr - UIC command for DME_GET, DME_PEER_GET
- * @hba: per adapter instance
- * @attr_sel: uic command argument1
- * @mib_val: the value of the attribute as returned by the UIC command
- * @peer: indicate whether peer or local
- *
- * Returns 0 on success, non-zero value on failure
- */
-int ufshcd_dme_get_attr(struct ufs_hba *hba, u32 attr_sel,
-			u32 *mib_val, u8 peer)
-{
-	struct uic_command uic_cmd = {0};
-	static const char *const action[] = {
-		"dme-get",
-		"dme-peer-get"
-	};
-	const char *get = action[!!peer];
-	int ret;
-	int retries = UFS_UIC_COMMAND_RETRIES;
-	struct ufs_pa_layer_attr orig_pwr_info;
-	struct ufs_pa_layer_attr temp_pwr_info;
-	bool pwr_mode_change = false;
-
-	if (peer && (hba->quirks & UFSHCD_QUIRK_DME_PEER_ACCESS_AUTO_MODE)) {
-		orig_pwr_info = hba->pwr_info;
-		temp_pwr_info = orig_pwr_info;
-
-		if (orig_pwr_info.pwr_tx == FAST_MODE ||
-		    orig_pwr_info.pwr_rx == FAST_MODE) {
-			temp_pwr_info.pwr_tx = FASTAUTO_MODE;
-			temp_pwr_info.pwr_rx = FASTAUTO_MODE;
-			pwr_mode_change = true;
-		} else if (orig_pwr_info.pwr_tx == SLOW_MODE ||
-		    orig_pwr_info.pwr_rx == SLOW_MODE) {
-			temp_pwr_info.pwr_tx = SLOWAUTO_MODE;
-			temp_pwr_info.pwr_rx = SLOWAUTO_MODE;
-			pwr_mode_change = true;
-		}
-		if (pwr_mode_change) {
-			ret = ufshcd_change_power_mode(hba, &temp_pwr_info);
-			if (ret)
-				goto out;
-		}
-	}
-
-	uic_cmd.command = peer ?
-		UIC_CMD_DME_PEER_GET : UIC_CMD_DME_GET;
-	uic_cmd.argument1 = attr_sel;
-
-	do {
-		/* for peer attributes we retry upon failure */
-		ret = ufshcd_send_uic_cmd(hba, &uic_cmd);
-		if (ret)
-			dev_dbg(hba->dev, "%s: attr-id 0x%x error code %d\n",
-				get, UIC_GET_ATTR_ID(attr_sel), ret);
-	} while (ret && peer && --retries);
-
-	if (ret)
-		dev_err(hba->dev, "%s: attr-id 0x%x failed %d retries\n",
-			get, UIC_GET_ATTR_ID(attr_sel),
-			UFS_UIC_COMMAND_RETRIES - retries);
-
-	if (mib_val && !ret)
-		*mib_val = uic_cmd.argument3;
-
-	if (peer && (hba->quirks & UFSHCD_QUIRK_DME_PEER_ACCESS_AUTO_MODE)
-	    && pwr_mode_change)
-		ufshcd_change_power_mode(hba, &orig_pwr_info);
-out:
-	return ret;
-}
-EXPORT_SYMBOL_GPL(ufshcd_dme_get_attr);
-
-/**
- * ufshcd_uic_pwr_ctrl - executes UIC commands (which affects the link power
- * state) and waits for it to take effect.
- *
- * @hba: per adapter instance
- * @cmd: UIC command to execute
- *
- * DME operations like DME_SET(PA_PWRMODE), DME_HIBERNATE_ENTER &
- * DME_HIBERNATE_EXIT commands take some time to take its effect on both host
- * and device UniPro link and hence it's final completion would be indicated by
- * dedicated status bits in Interrupt Status register (UPMS, UHES, UHXS) in
- * addition to normal UIC command completion Status (UCCS). This function only
- * returns after the relevant status bits indicate the completion.
- *
- * Returns 0 on success, non-zero value on failure
- */
-static int ufshcd_uic_pwr_ctrl(struct ufs_hba *hba, struct uic_command *cmd)
-{
-	DECLARE_COMPLETION_ONSTACK(uic_async_done);
-	unsigned long flags;
-	u8 status;
-	int ret;
-	bool reenable_intr = false;
-
-	mutex_lock(&hba->uic_cmd_mutex);
-	ufshcd_add_delay_before_dme_cmd(hba);
-
-	spin_lock_irqsave(hba->host->host_lock, flags);
-	if (ufshcd_is_link_broken(hba)) {
-		ret = -ENOLINK;
-		goto out_unlock;
-	}
-	hba->uic_async_done = &uic_async_done;
-	if (ufshcd_readl(hba, REG_INTERRUPT_ENABLE) & UIC_COMMAND_COMPL) {
-		ufshcd_disable_intr(hba, UIC_COMMAND_COMPL);
-		/*
-		 * Make sure UIC command completion interrupt is disabled before
-		 * issuing UIC command.
-		 */
-		wmb();
-		reenable_intr = true;
-	}
-	ret = __ufshcd_send_uic_cmd(hba, cmd, false);
-	spin_unlock_irqrestore(hba->host->host_lock, flags);
-	if (ret) {
-		dev_err(hba->dev,
-			"pwr ctrl cmd 0x%x with mode 0x%x uic error %d\n",
-			cmd->command, cmd->argument3, ret);
-		goto out;
-	}
-
-	if (!wait_for_completion_timeout(hba->uic_async_done,
-					 msecs_to_jiffies(UIC_CMD_TIMEOUT))) {
-		dev_err(hba->dev,
-			"pwr ctrl cmd 0x%x with mode 0x%x completion timeout\n",
-			cmd->command, cmd->argument3);
-
-		if (!cmd->cmd_active) {
-			dev_err(hba->dev, "%s: Power Mode Change operation has been completed, go check UPMCRS\n",
-				__func__);
-			goto check_upmcrs;
-		}
-
-		ret = -ETIMEDOUT;
-		goto out;
-	}
-
-check_upmcrs:
-	status = ufshcd_get_upmcrs(hba);
-	if (status != PWR_LOCAL) {
-		dev_err(hba->dev,
-			"pwr ctrl cmd 0x%x failed, host upmcrs:0x%x\n",
-			cmd->command, status);
-		ret = (status != PWR_OK) ? status : -1;
-	}
-out:
-	if (ret) {
-		ufshcd_print_host_state(hba);
-		ufshcd_print_pwr_info(hba);
-		ufshcd_print_evt_hist(hba);
-	}
-
-	spin_lock_irqsave(hba->host->host_lock, flags);
-	hba->active_uic_cmd = NULL;
-	hba->uic_async_done = NULL;
-	if (reenable_intr)
-		ufshcd_enable_intr(hba, UIC_COMMAND_COMPL);
-	if (ret) {
-		ufshcd_set_link_broken(hba);
-		ufshcd_schedule_eh_work(hba);
-	}
-out_unlock:
-	spin_unlock_irqrestore(hba->host->host_lock, flags);
-	mutex_unlock(&hba->uic_cmd_mutex);
-
-	return ret;
-}
-
-/**
- * ufshcd_uic_change_pwr_mode - Perform the UIC power mode chage
- *				using DME_SET primitives.
- * @hba: per adapter instance
- * @mode: powr mode value
- *
- * Returns 0 on success, non-zero value on failure
- */
-static int ufshcd_uic_change_pwr_mode(struct ufs_hba *hba, u8 mode)
-{
-	struct uic_command uic_cmd = {0};
-	int ret;
-
-	if (hba->quirks & UFSHCD_QUIRK_BROKEN_PA_RXHSUNTERMCAP) {
-		ret = ufshcd_dme_set(hba,
-				UIC_ARG_MIB_SEL(PA_RXHSUNTERMCAP, 0), 1);
-		if (ret) {
-			dev_err(hba->dev, "%s: failed to enable PA_RXHSUNTERMCAP ret %d\n",
-						__func__, ret);
-			goto out;
-		}
-	}
-
-	uic_cmd.command = UIC_CMD_DME_SET;
-	uic_cmd.argument1 = UIC_ARG_MIB(PA_PWRMODE);
-	uic_cmd.argument3 = mode;
-	ufshcd_hold(hba, false);
-	ret = ufshcd_uic_pwr_ctrl(hba, &uic_cmd);
-	ufshcd_release(hba);
-
-out:
-	return ret;
-}
-
-int ufshcd_link_recovery(struct ufs_hba *hba)
-{
-	int ret;
-	unsigned long flags;
-
-	spin_lock_irqsave(hba->host->host_lock, flags);
-	hba->ufshcd_state = UFSHCD_STATE_RESET;
-	ufshcd_set_eh_in_progress(hba);
-	spin_unlock_irqrestore(hba->host->host_lock, flags);
-
-	/* Reset the attached device */
-	ufshcd_device_reset(hba);
-
-	ret = ufshcd_host_reset_and_restore(hba);
-
-	spin_lock_irqsave(hba->host->host_lock, flags);
-	if (ret)
-		hba->ufshcd_state = UFSHCD_STATE_ERROR;
-	ufshcd_clear_eh_in_progress(hba);
-	spin_unlock_irqrestore(hba->host->host_lock, flags);
-
-	if (ret)
-		dev_err(hba->dev, "%s: link recovery failed, err %d",
-			__func__, ret);
-
-	return ret;
-}
-EXPORT_SYMBOL_GPL(ufshcd_link_recovery);
-
-int ufshcd_uic_hibern8_enter(struct ufs_hba *hba)
-{
-	int ret;
-	struct uic_command uic_cmd = {0};
-	ktime_t start = ktime_get();
-
-	ufshcd_vops_hibern8_notify(hba, UIC_CMD_DME_HIBER_ENTER, PRE_CHANGE);
-
-	uic_cmd.command = UIC_CMD_DME_HIBER_ENTER;
-	ret = ufshcd_uic_pwr_ctrl(hba, &uic_cmd);
-	trace_ufshcd_profile_hibern8(dev_name(hba->dev), "enter",
-			     ktime_to_us(ktime_sub(ktime_get(), start)), ret);
-
-	if (ret)
-		dev_err(hba->dev, "%s: hibern8 enter failed. ret = %d\n",
-			__func__, ret);
-	else
-		ufshcd_vops_hibern8_notify(hba, UIC_CMD_DME_HIBER_ENTER,
-								POST_CHANGE);
-
-	return ret;
-}
-EXPORT_SYMBOL_GPL(ufshcd_uic_hibern8_enter);
-
-int ufshcd_uic_hibern8_exit(struct ufs_hba *hba)
-{
-	struct uic_command uic_cmd = {0};
-	int ret;
-	ktime_t start = ktime_get();
-
-	ufshcd_vops_hibern8_notify(hba, UIC_CMD_DME_HIBER_EXIT, PRE_CHANGE);
-
-	uic_cmd.command = UIC_CMD_DME_HIBER_EXIT;
-	ret = ufshcd_uic_pwr_ctrl(hba, &uic_cmd);
-	trace_ufshcd_profile_hibern8(dev_name(hba->dev), "exit",
-			     ktime_to_us(ktime_sub(ktime_get(), start)), ret);
-
-	if (ret) {
-		dev_err(hba->dev, "%s: hibern8 exit failed. ret = %d\n",
-			__func__, ret);
-	} else {
-		ufshcd_vops_hibern8_notify(hba, UIC_CMD_DME_HIBER_EXIT,
-								POST_CHANGE);
-		hba->ufs_stats.last_hibern8_exit_tstamp = ktime_get();
-		hba->ufs_stats.hibern8_exit_cnt++;
-	}
-
-	return ret;
-}
-EXPORT_SYMBOL_GPL(ufshcd_uic_hibern8_exit);
-
-void ufshcd_auto_hibern8_update(struct ufs_hba *hba, u32 ahit)
-{
-	unsigned long flags;
-	bool update = false;
-
-	if (!ufshcd_is_auto_hibern8_supported(hba))
-		return;
-
-	spin_lock_irqsave(hba->host->host_lock, flags);
-	if (hba->ahit != ahit) {
-		hba->ahit = ahit;
-		update = true;
-	}
-	spin_unlock_irqrestore(hba->host->host_lock, flags);
-
-	if (update &&
-	    !pm_runtime_suspended(&hba->ufs_device_wlun->sdev_gendev)) {
-		ufshcd_rpm_get_sync(hba);
-		ufshcd_hold(hba, false);
-		ufshcd_auto_hibern8_enable(hba);
-		ufshcd_release(hba);
-		ufshcd_rpm_put_sync(hba);
-	}
-}
-EXPORT_SYMBOL_GPL(ufshcd_auto_hibern8_update);
-
-void ufshcd_auto_hibern8_enable(struct ufs_hba *hba)
-{
-	if (!ufshcd_is_auto_hibern8_supported(hba))
-		return;
-
-	ufshcd_writel(hba, hba->ahit, REG_AUTO_HIBERNATE_IDLE_TIMER);
-}
-
- /**
- * ufshcd_init_pwr_info - setting the POR (power on reset)
- * values in hba power info
- * @hba: per-adapter instance
- */
-static void ufshcd_init_pwr_info(struct ufs_hba *hba)
-{
-	hba->pwr_info.gear_rx = UFS_PWM_G1;
-	hba->pwr_info.gear_tx = UFS_PWM_G1;
-	hba->pwr_info.lane_rx = 1;
-	hba->pwr_info.lane_tx = 1;
-	hba->pwr_info.pwr_rx = SLOWAUTO_MODE;
-	hba->pwr_info.pwr_tx = SLOWAUTO_MODE;
-	hba->pwr_info.hs_rate = 0;
-}
-
-/**
- * ufshcd_get_max_pwr_mode - reads the max power mode negotiated with device
- * @hba: per-adapter instance
- */
-static int ufshcd_get_max_pwr_mode(struct ufs_hba *hba)
-{
-	struct ufs_pa_layer_attr *pwr_info = &hba->max_pwr_info.info;
-
-	if (hba->max_pwr_info.is_valid)
-		return 0;
-
-	pwr_info->pwr_tx = FAST_MODE;
-	pwr_info->pwr_rx = FAST_MODE;
-	pwr_info->hs_rate = PA_HS_MODE_B;
-
-	/* Get the connected lane count */
-	ufshcd_dme_get(hba, UIC_ARG_MIB(PA_CONNECTEDRXDATALANES),
-			&pwr_info->lane_rx);
-	ufshcd_dme_get(hba, UIC_ARG_MIB(PA_CONNECTEDTXDATALANES),
-			&pwr_info->lane_tx);
-
-	if (!pwr_info->lane_rx || !pwr_info->lane_tx) {
-		dev_err(hba->dev, "%s: invalid connected lanes value. rx=%d, tx=%d\n",
-				__func__,
-				pwr_info->lane_rx,
-				pwr_info->lane_tx);
-		return -EINVAL;
-	}
-
-	/*
-	 * First, get the maximum gears of HS speed.
-	 * If a zero value, it means there is no HSGEAR capability.
-	 * Then, get the maximum gears of PWM speed.
-	 */
-	ufshcd_dme_get(hba, UIC_ARG_MIB(PA_MAXRXHSGEAR), &pwr_info->gear_rx);
-	if (!pwr_info->gear_rx) {
-		ufshcd_dme_get(hba, UIC_ARG_MIB(PA_MAXRXPWMGEAR),
-				&pwr_info->gear_rx);
-		if (!pwr_info->gear_rx) {
-			dev_err(hba->dev, "%s: invalid max pwm rx gear read = %d\n",
-				__func__, pwr_info->gear_rx);
-			return -EINVAL;
-		}
-		pwr_info->pwr_rx = SLOW_MODE;
-	}
-
-	ufshcd_dme_peer_get(hba, UIC_ARG_MIB(PA_MAXRXHSGEAR),
-			&pwr_info->gear_tx);
-	if (!pwr_info->gear_tx) {
-		ufshcd_dme_peer_get(hba, UIC_ARG_MIB(PA_MAXRXPWMGEAR),
-				&pwr_info->gear_tx);
-		if (!pwr_info->gear_tx) {
-			dev_err(hba->dev, "%s: invalid max pwm tx gear read = %d\n",
-				__func__, pwr_info->gear_tx);
-			return -EINVAL;
-		}
-		pwr_info->pwr_tx = SLOW_MODE;
-	}
-
-	hba->max_pwr_info.is_valid = true;
-	return 0;
-}
-
-static int ufshcd_change_power_mode(struct ufs_hba *hba,
-			     struct ufs_pa_layer_attr *pwr_mode)
-{
-	int ret;
-
-	/* if already configured to the requested pwr_mode */
-	if (!hba->force_pmc &&
-	    pwr_mode->gear_rx == hba->pwr_info.gear_rx &&
-	    pwr_mode->gear_tx == hba->pwr_info.gear_tx &&
-	    pwr_mode->lane_rx == hba->pwr_info.lane_rx &&
-	    pwr_mode->lane_tx == hba->pwr_info.lane_tx &&
-	    pwr_mode->pwr_rx == hba->pwr_info.pwr_rx &&
-	    pwr_mode->pwr_tx == hba->pwr_info.pwr_tx &&
-	    pwr_mode->hs_rate == hba->pwr_info.hs_rate) {
-		dev_dbg(hba->dev, "%s: power already configured\n", __func__);
-		return 0;
-	}
-
-	/*
-	 * Configure attributes for power mode change with below.
-	 * - PA_RXGEAR, PA_ACTIVERXDATALANES, PA_RXTERMINATION,
-	 * - PA_TXGEAR, PA_ACTIVETXDATALANES, PA_TXTERMINATION,
-	 * - PA_HSSERIES
-	 */
-	ufshcd_dme_set(hba, UIC_ARG_MIB(PA_RXGEAR), pwr_mode->gear_rx);
-	ufshcd_dme_set(hba, UIC_ARG_MIB(PA_ACTIVERXDATALANES),
-			pwr_mode->lane_rx);
-	if (pwr_mode->pwr_rx == FASTAUTO_MODE ||
-			pwr_mode->pwr_rx == FAST_MODE)
-		ufshcd_dme_set(hba, UIC_ARG_MIB(PA_RXTERMINATION), true);
-	else
-		ufshcd_dme_set(hba, UIC_ARG_MIB(PA_RXTERMINATION), false);
-
-	ufshcd_dme_set(hba, UIC_ARG_MIB(PA_TXGEAR), pwr_mode->gear_tx);
-	ufshcd_dme_set(hba, UIC_ARG_MIB(PA_ACTIVETXDATALANES),
-			pwr_mode->lane_tx);
-	if (pwr_mode->pwr_tx == FASTAUTO_MODE ||
-			pwr_mode->pwr_tx == FAST_MODE)
-		ufshcd_dme_set(hba, UIC_ARG_MIB(PA_TXTERMINATION), true);
-	else
-		ufshcd_dme_set(hba, UIC_ARG_MIB(PA_TXTERMINATION), false);
-
-	if (pwr_mode->pwr_rx == FASTAUTO_MODE ||
-	    pwr_mode->pwr_tx == FASTAUTO_MODE ||
-	    pwr_mode->pwr_rx == FAST_MODE ||
-	    pwr_mode->pwr_tx == FAST_MODE)
-		ufshcd_dme_set(hba, UIC_ARG_MIB(PA_HSSERIES),
-						pwr_mode->hs_rate);
-
-	if (!(hba->quirks & UFSHCD_QUIRK_SKIP_DEF_UNIPRO_TIMEOUT_SETTING)) {
-		ufshcd_dme_set(hba, UIC_ARG_MIB(PA_PWRMODEUSERDATA0),
-				DL_FC0ProtectionTimeOutVal_Default);
-		ufshcd_dme_set(hba, UIC_ARG_MIB(PA_PWRMODEUSERDATA1),
-				DL_TC0ReplayTimeOutVal_Default);
-		ufshcd_dme_set(hba, UIC_ARG_MIB(PA_PWRMODEUSERDATA2),
-				DL_AFC0ReqTimeOutVal_Default);
-		ufshcd_dme_set(hba, UIC_ARG_MIB(PA_PWRMODEUSERDATA3),
-				DL_FC1ProtectionTimeOutVal_Default);
-		ufshcd_dme_set(hba, UIC_ARG_MIB(PA_PWRMODEUSERDATA4),
-				DL_TC1ReplayTimeOutVal_Default);
-		ufshcd_dme_set(hba, UIC_ARG_MIB(PA_PWRMODEUSERDATA5),
-				DL_AFC1ReqTimeOutVal_Default);
-
-		ufshcd_dme_set(hba, UIC_ARG_MIB(DME_LocalFC0ProtectionTimeOutVal),
-				DL_FC0ProtectionTimeOutVal_Default);
-		ufshcd_dme_set(hba, UIC_ARG_MIB(DME_LocalTC0ReplayTimeOutVal),
-				DL_TC0ReplayTimeOutVal_Default);
-		ufshcd_dme_set(hba, UIC_ARG_MIB(DME_LocalAFC0ReqTimeOutVal),
-				DL_AFC0ReqTimeOutVal_Default);
-	}
-
-	ret = ufshcd_uic_change_pwr_mode(hba, pwr_mode->pwr_rx << 4
-			| pwr_mode->pwr_tx);
-
-	if (ret) {
-		dev_err(hba->dev,
-			"%s: power mode change failed %d\n", __func__, ret);
-	} else {
-		ufshcd_vops_pwr_change_notify(hba, POST_CHANGE, NULL,
-								pwr_mode);
-
-		memcpy(&hba->pwr_info, pwr_mode,
-			sizeof(struct ufs_pa_layer_attr));
-	}
-
-	return ret;
-}
-
-/**
- * ufshcd_config_pwr_mode - configure a new power mode
- * @hba: per-adapter instance
- * @desired_pwr_mode: desired power configuration
- */
-int ufshcd_config_pwr_mode(struct ufs_hba *hba,
-		struct ufs_pa_layer_attr *desired_pwr_mode)
-{
-	struct ufs_pa_layer_attr final_params = { 0 };
-	int ret;
-
-	ret = ufshcd_vops_pwr_change_notify(hba, PRE_CHANGE,
-					desired_pwr_mode, &final_params);
-
-	if (ret)
-		memcpy(&final_params, desired_pwr_mode, sizeof(final_params));
-
-	ret = ufshcd_change_power_mode(hba, &final_params);
-
-	return ret;
-}
-EXPORT_SYMBOL_GPL(ufshcd_config_pwr_mode);
-
-/**
- * ufshcd_complete_dev_init() - checks device readiness
- * @hba: per-adapter instance
- *
- * Set fDeviceInit flag and poll until device toggles it.
- */
-static int ufshcd_complete_dev_init(struct ufs_hba *hba)
-{
-	int err;
-	bool flag_res = true;
-	ktime_t timeout;
-
-	err = ufshcd_query_flag_retry(hba, UPIU_QUERY_OPCODE_SET_FLAG,
-		QUERY_FLAG_IDN_FDEVICEINIT, 0, NULL);
-	if (err) {
-		dev_err(hba->dev,
-			"%s setting fDeviceInit flag failed with error %d\n",
-			__func__, err);
-		goto out;
-	}
-
-	/* Poll fDeviceInit flag to be cleared */
-	timeout = ktime_add_ms(ktime_get(), FDEVICEINIT_COMPL_TIMEOUT);
-	do {
-		err = ufshcd_query_flag(hba, UPIU_QUERY_OPCODE_READ_FLAG,
-					QUERY_FLAG_IDN_FDEVICEINIT, 0, &flag_res);
-		if (!flag_res)
-			break;
-		usleep_range(500, 1000);
-	} while (ktime_before(ktime_get(), timeout));
-
-	if (err) {
-		dev_err(hba->dev,
-				"%s reading fDeviceInit flag failed with error %d\n",
-				__func__, err);
-	} else if (flag_res) {
-		dev_err(hba->dev,
-				"%s fDeviceInit was not cleared by the device\n",
-				__func__);
-		err = -EBUSY;
-	}
-out:
-	return err;
-}
-
-/**
- * ufshcd_make_hba_operational - Make UFS controller operational
- * @hba: per adapter instance
- *
- * To bring UFS host controller to operational state,
- * 1. Enable required interrupts
- * 2. Configure interrupt aggregation
- * 3. Program UTRL and UTMRL base address
- * 4. Configure run-stop-registers
- *
- * Returns 0 on success, non-zero value on failure
- */
-int ufshcd_make_hba_operational(struct ufs_hba *hba)
-{
-	int err = 0;
-	u32 reg;
-
-	/* Enable required interrupts */
-	ufshcd_enable_intr(hba, UFSHCD_ENABLE_INTRS);
-
-	/* Configure interrupt aggregation */
-	if (ufshcd_is_intr_aggr_allowed(hba))
-		ufshcd_config_intr_aggr(hba, hba->nutrs - 1, INT_AGGR_DEF_TO);
-	else
-		ufshcd_disable_intr_aggr(hba);
-
-	/* Configure UTRL and UTMRL base address registers */
-	ufshcd_writel(hba, lower_32_bits(hba->utrdl_dma_addr),
-			REG_UTP_TRANSFER_REQ_LIST_BASE_L);
-	ufshcd_writel(hba, upper_32_bits(hba->utrdl_dma_addr),
-			REG_UTP_TRANSFER_REQ_LIST_BASE_H);
-	ufshcd_writel(hba, lower_32_bits(hba->utmrdl_dma_addr),
-			REG_UTP_TASK_REQ_LIST_BASE_L);
-	ufshcd_writel(hba, upper_32_bits(hba->utmrdl_dma_addr),
-			REG_UTP_TASK_REQ_LIST_BASE_H);
-
-	/*
-	 * Make sure base address and interrupt setup are updated before
-	 * enabling the run/stop registers below.
-	 */
-	wmb();
-
-	/*
-	 * UCRDY, UTMRLDY and UTRLRDY bits must be 1
-	 */
-	reg = ufshcd_readl(hba, REG_CONTROLLER_STATUS);
-	if (!(ufshcd_get_lists_status(reg))) {
-		ufshcd_enable_run_stop_reg(hba);
-	} else {
-		dev_err(hba->dev,
-			"Host controller not ready to process requests");
-		err = -EIO;
-	}
-
-	return err;
-}
-EXPORT_SYMBOL_GPL(ufshcd_make_hba_operational);
-
-/**
- * ufshcd_hba_stop - Send controller to reset state
- * @hba: per adapter instance
- */
-void ufshcd_hba_stop(struct ufs_hba *hba)
-{
-	unsigned long flags;
-	int err;
-
-	/*
-	 * Obtain the host lock to prevent that the controller is disabled
-	 * while the UFS interrupt handler is active on another CPU.
-	 */
-	spin_lock_irqsave(hba->host->host_lock, flags);
-	ufshcd_writel(hba, CONTROLLER_DISABLE,  REG_CONTROLLER_ENABLE);
-	spin_unlock_irqrestore(hba->host->host_lock, flags);
-
-	err = ufshcd_wait_for_register(hba, REG_CONTROLLER_ENABLE,
-					CONTROLLER_ENABLE, CONTROLLER_DISABLE,
-					10, 1);
-	if (err)
-		dev_err(hba->dev, "%s: Controller disable failed\n", __func__);
-}
-EXPORT_SYMBOL_GPL(ufshcd_hba_stop);
-
-/**
- * ufshcd_hba_execute_hce - initialize the controller
- * @hba: per adapter instance
- *
- * The controller resets itself and controller firmware initialization
- * sequence kicks off. When controller is ready it will set
- * the Host Controller Enable bit to 1.
- *
- * Returns 0 on success, non-zero value on failure
- */
-static int ufshcd_hba_execute_hce(struct ufs_hba *hba)
-{
-	int retry_outer = 3;
-	int retry_inner;
-
-start:
-	if (ufshcd_is_hba_active(hba))
-		/* change controller state to "reset state" */
-		ufshcd_hba_stop(hba);
-
-	/* UniPro link is disabled at this point */
-	ufshcd_set_link_off(hba);
-
-	ufshcd_vops_hce_enable_notify(hba, PRE_CHANGE);
-
-	/* start controller initialization sequence */
-	ufshcd_hba_start(hba);
-
-	/*
-	 * To initialize a UFS host controller HCE bit must be set to 1.
-	 * During initialization the HCE bit value changes from 1->0->1.
-	 * When the host controller completes initialization sequence
-	 * it sets the value of HCE bit to 1. The same HCE bit is read back
-	 * to check if the controller has completed initialization sequence.
-	 * So without this delay the value HCE = 1, set in the previous
-	 * instruction might be read back.
-	 * This delay can be changed based on the controller.
-	 */
-	ufshcd_delay_us(hba->vps->hba_enable_delay_us, 100);
-
-	/* wait for the host controller to complete initialization */
-	retry_inner = 50;
-	while (!ufshcd_is_hba_active(hba)) {
-		if (retry_inner) {
-			retry_inner--;
-		} else {
-			dev_err(hba->dev,
-				"Controller enable failed\n");
-			if (retry_outer) {
-				retry_outer--;
-				goto start;
-			}
-			return -EIO;
-		}
-		usleep_range(1000, 1100);
-	}
-
-	/* enable UIC related interrupts */
-	ufshcd_enable_intr(hba, UFSHCD_UIC_MASK);
-
-	ufshcd_vops_hce_enable_notify(hba, POST_CHANGE);
-
-	return 0;
-}
-
-int ufshcd_hba_enable(struct ufs_hba *hba)
-{
-	int ret;
-
-	if (hba->quirks & UFSHCI_QUIRK_BROKEN_HCE) {
-		ufshcd_set_link_off(hba);
-		ufshcd_vops_hce_enable_notify(hba, PRE_CHANGE);
-
-		/* enable UIC related interrupts */
-		ufshcd_enable_intr(hba, UFSHCD_UIC_MASK);
-		ret = ufshcd_dme_reset(hba);
-		if (!ret) {
-			ret = ufshcd_dme_enable(hba);
-			if (!ret)
-				ufshcd_vops_hce_enable_notify(hba, POST_CHANGE);
-			if (ret)
-				dev_err(hba->dev,
-					"Host controller enable failed with non-hce\n");
-		}
-	} else {
-		ret = ufshcd_hba_execute_hce(hba);
-	}
-
-	return ret;
-}
-EXPORT_SYMBOL_GPL(ufshcd_hba_enable);
-
-static int ufshcd_disable_tx_lcc(struct ufs_hba *hba, bool peer)
-{
-	int tx_lanes = 0, i, err = 0;
-
-	if (!peer)
-		ufshcd_dme_get(hba, UIC_ARG_MIB(PA_CONNECTEDTXDATALANES),
-			       &tx_lanes);
-	else
-		ufshcd_dme_peer_get(hba, UIC_ARG_MIB(PA_CONNECTEDTXDATALANES),
-				    &tx_lanes);
-	for (i = 0; i < tx_lanes; i++) {
-		if (!peer)
-			err = ufshcd_dme_set(hba,
-				UIC_ARG_MIB_SEL(TX_LCC_ENABLE,
-					UIC_ARG_MPHY_TX_GEN_SEL_INDEX(i)),
-					0);
-		else
-			err = ufshcd_dme_peer_set(hba,
-				UIC_ARG_MIB_SEL(TX_LCC_ENABLE,
-					UIC_ARG_MPHY_TX_GEN_SEL_INDEX(i)),
-					0);
-		if (err) {
-			dev_err(hba->dev, "%s: TX LCC Disable failed, peer = %d, lane = %d, err = %d",
-				__func__, peer, i, err);
-			break;
-		}
-	}
-
-	return err;
-}
-
-static inline int ufshcd_disable_device_tx_lcc(struct ufs_hba *hba)
-{
-	return ufshcd_disable_tx_lcc(hba, true);
-}
-
-void ufshcd_update_evt_hist(struct ufs_hba *hba, u32 id, u32 val)
-{
-	struct ufs_event_hist *e;
-
-	if (id >= UFS_EVT_CNT)
-		return;
-
-	e = &hba->ufs_stats.event[id];
-	e->val[e->pos] = val;
-	e->tstamp[e->pos] = ktime_get();
-	e->cnt += 1;
-	e->pos = (e->pos + 1) % UFS_EVENT_HIST_LENGTH;
-
-	ufshcd_vops_event_notify(hba, id, &val);
-}
-EXPORT_SYMBOL_GPL(ufshcd_update_evt_hist);
-
-/**
- * ufshcd_link_startup - Initialize unipro link startup
- * @hba: per adapter instance
- *
- * Returns 0 for success, non-zero in case of failure
- */
-static int ufshcd_link_startup(struct ufs_hba *hba)
-{
-	int ret;
-	int retries = DME_LINKSTARTUP_RETRIES;
-	bool link_startup_again = false;
-
-	/*
-	 * If UFS device isn't active then we will have to issue link startup
-	 * 2 times to make sure the device state move to active.
-	 */
-	if (!ufshcd_is_ufs_dev_active(hba))
-		link_startup_again = true;
-
-link_startup:
-	do {
-		ufshcd_vops_link_startup_notify(hba, PRE_CHANGE);
-
-		ret = ufshcd_dme_link_startup(hba);
-
-		/* check if device is detected by inter-connect layer */
-		if (!ret && !ufshcd_is_device_present(hba)) {
-			ufshcd_update_evt_hist(hba,
-					       UFS_EVT_LINK_STARTUP_FAIL,
-					       0);
-			dev_err(hba->dev, "%s: Device not present\n", __func__);
-			ret = -ENXIO;
-			goto out;
-		}
-
-		/*
-		 * DME link lost indication is only received when link is up,
-		 * but we can't be sure if the link is up until link startup
-		 * succeeds. So reset the local Uni-Pro and try again.
-		 */
-		if (ret && ufshcd_hba_enable(hba)) {
-			ufshcd_update_evt_hist(hba,
-					       UFS_EVT_LINK_STARTUP_FAIL,
-					       (u32)ret);
-			goto out;
-		}
-	} while (ret && retries--);
-
-	if (ret) {
-		/* failed to get the link up... retire */
-		ufshcd_update_evt_hist(hba,
-				       UFS_EVT_LINK_STARTUP_FAIL,
-				       (u32)ret);
-		goto out;
-	}
-
-	if (link_startup_again) {
-		link_startup_again = false;
-		retries = DME_LINKSTARTUP_RETRIES;
-		goto link_startup;
-	}
-
-	/* Mark that link is up in PWM-G1, 1-lane, SLOW-AUTO mode */
-	ufshcd_init_pwr_info(hba);
-	ufshcd_print_pwr_info(hba);
-
-	if (hba->quirks & UFSHCD_QUIRK_BROKEN_LCC) {
-		ret = ufshcd_disable_device_tx_lcc(hba);
-		if (ret)
-			goto out;
-	}
-
-	/* Include any host controller configuration via UIC commands */
-	ret = ufshcd_vops_link_startup_notify(hba, POST_CHANGE);
-	if (ret)
-		goto out;
-
-	/* Clear UECPA once due to LINERESET has happened during LINK_STARTUP */
-	ufshcd_readl(hba, REG_UIC_ERROR_CODE_PHY_ADAPTER_LAYER);
-	ret = ufshcd_make_hba_operational(hba);
-out:
-	if (ret) {
-		dev_err(hba->dev, "link startup failed %d\n", ret);
-		ufshcd_print_host_state(hba);
-		ufshcd_print_pwr_info(hba);
-		ufshcd_print_evt_hist(hba);
-	}
-	return ret;
-}
-
-/**
- * ufshcd_verify_dev_init() - Verify device initialization
- * @hba: per-adapter instance
- *
- * Send NOP OUT UPIU and wait for NOP IN response to check whether the
- * device Transport Protocol (UTP) layer is ready after a reset.
- * If the UTP layer at the device side is not initialized, it may
- * not respond with NOP IN UPIU within timeout of %NOP_OUT_TIMEOUT
- * and we retry sending NOP OUT for %NOP_OUT_RETRIES iterations.
- */
-static int ufshcd_verify_dev_init(struct ufs_hba *hba)
-{
-	int err = 0;
-	int retries;
-
-	ufshcd_hold(hba, false);
-	mutex_lock(&hba->dev_cmd.lock);
-	for (retries = NOP_OUT_RETRIES; retries > 0; retries--) {
-		err = ufshcd_exec_dev_cmd(hba, DEV_CMD_TYPE_NOP,
-					  hba->nop_out_timeout);
-
-		if (!err || err == -ETIMEDOUT)
-			break;
-
-		dev_dbg(hba->dev, "%s: error %d retrying\n", __func__, err);
-	}
-	mutex_unlock(&hba->dev_cmd.lock);
-	ufshcd_release(hba);
-
-	if (err)
-		dev_err(hba->dev, "%s: NOP OUT failed %d\n", __func__, err);
-	return err;
-}
-
-/**
- * ufshcd_set_queue_depth - set lun queue depth
- * @sdev: pointer to SCSI device
- *
- * Read bLUQueueDepth value and activate scsi tagged command
- * queueing. For WLUN, queue depth is set to 1. For best-effort
- * cases (bLUQueueDepth = 0) the queue depth is set to a maximum
- * value that host can queue.
- */
-static void ufshcd_set_queue_depth(struct scsi_device *sdev)
-{
-	int ret = 0;
-	u8 lun_qdepth;
-	struct ufs_hba *hba;
-
-	hba = shost_priv(sdev->host);
-
-	lun_qdepth = hba->nutrs;
-	ret = ufshcd_read_unit_desc_param(hba,
-					  ufshcd_scsi_to_upiu_lun(sdev->lun),
-					  UNIT_DESC_PARAM_LU_Q_DEPTH,
-					  &lun_qdepth,
-					  sizeof(lun_qdepth));
-
-	/* Some WLUN doesn't support unit descriptor */
-	if (ret == -EOPNOTSUPP)
-		lun_qdepth = 1;
-	else if (!lun_qdepth)
-		/* eventually, we can figure out the real queue depth */
-		lun_qdepth = hba->nutrs;
-	else
-		lun_qdepth = min_t(int, lun_qdepth, hba->nutrs);
-
-	dev_dbg(hba->dev, "%s: activate tcq with queue depth %d\n",
-			__func__, lun_qdepth);
-	scsi_change_queue_depth(sdev, lun_qdepth);
-}
-
-/*
- * ufshcd_get_lu_wp - returns the "b_lu_write_protect" from UNIT DESCRIPTOR
- * @hba: per-adapter instance
- * @lun: UFS device lun id
- * @b_lu_write_protect: pointer to buffer to hold the LU's write protect info
- *
- * Returns 0 in case of success and b_lu_write_protect status would be returned
- * @b_lu_write_protect parameter.
- * Returns -ENOTSUPP if reading b_lu_write_protect is not supported.
- * Returns -EINVAL in case of invalid parameters passed to this function.
- */
-static int ufshcd_get_lu_wp(struct ufs_hba *hba,
-			    u8 lun,
-			    u8 *b_lu_write_protect)
-{
-	int ret;
-
-	if (!b_lu_write_protect)
-		ret = -EINVAL;
-	/*
-	 * According to UFS device spec, RPMB LU can't be write
-	 * protected so skip reading bLUWriteProtect parameter for
-	 * it. For other W-LUs, UNIT DESCRIPTOR is not available.
-	 */
-	else if (lun >= hba->dev_info.max_lu_supported)
-		ret = -ENOTSUPP;
-	else
-		ret = ufshcd_read_unit_desc_param(hba,
-					  lun,
-					  UNIT_DESC_PARAM_LU_WR_PROTECT,
-					  b_lu_write_protect,
-					  sizeof(*b_lu_write_protect));
-	return ret;
-}
-
-/**
- * ufshcd_get_lu_power_on_wp_status - get LU's power on write protect
- * status
- * @hba: per-adapter instance
- * @sdev: pointer to SCSI device
- *
- */
-static inline void ufshcd_get_lu_power_on_wp_status(struct ufs_hba *hba,
-						    struct scsi_device *sdev)
-{
-	if (hba->dev_info.f_power_on_wp_en &&
-	    !hba->dev_info.is_lu_power_on_wp) {
-		u8 b_lu_write_protect;
-
-		if (!ufshcd_get_lu_wp(hba, ufshcd_scsi_to_upiu_lun(sdev->lun),
-				      &b_lu_write_protect) &&
-		    (b_lu_write_protect == UFS_LU_POWER_ON_WP))
-			hba->dev_info.is_lu_power_on_wp = true;
-	}
-}
-
-/**
- * ufshcd_setup_links - associate link b/w device wlun and other luns
- * @sdev: pointer to SCSI device
- * @hba: pointer to ufs hba
- */
-static void ufshcd_setup_links(struct ufs_hba *hba, struct scsi_device *sdev)
-{
-	struct device_link *link;
-
-	/*
-	 * Device wlun is the supplier & rest of the luns are consumers.
-	 * This ensures that device wlun suspends after all other luns.
-	 */
-	if (hba->ufs_device_wlun) {
-		link = device_link_add(&sdev->sdev_gendev,
-				       &hba->ufs_device_wlun->sdev_gendev,
-				       DL_FLAG_PM_RUNTIME | DL_FLAG_RPM_ACTIVE);
-		if (!link) {
-			dev_err(&sdev->sdev_gendev, "Failed establishing link - %s\n",
-				dev_name(&hba->ufs_device_wlun->sdev_gendev));
-			return;
-		}
-		hba->luns_avail--;
-		/* Ignore REPORT_LUN wlun probing */
-		if (hba->luns_avail == 1) {
-			ufshcd_rpm_put(hba);
-			return;
-		}
-	} else {
-		/*
-		 * Device wlun is probed. The assumption is that WLUNs are
-		 * scanned before other LUNs.
-		 */
-		hba->luns_avail--;
-	}
-}
-
-/**
- * ufshcd_slave_alloc - handle initial SCSI device configurations
- * @sdev: pointer to SCSI device
- *
- * Returns success
- */
-static int ufshcd_slave_alloc(struct scsi_device *sdev)
-{
-	struct ufs_hba *hba;
-
-	hba = shost_priv(sdev->host);
-
-	/* Mode sense(6) is not supported by UFS, so use Mode sense(10) */
-	sdev->use_10_for_ms = 1;
-
-	/* DBD field should be set to 1 in mode sense(10) */
-	sdev->set_dbd_for_ms = 1;
-
-	/* allow SCSI layer to restart the device in case of errors */
-	sdev->allow_restart = 1;
-
-	/* REPORT SUPPORTED OPERATION CODES is not supported */
-	sdev->no_report_opcodes = 1;
-
-	/* WRITE_SAME command is not supported */
-	sdev->no_write_same = 1;
-
-	ufshcd_set_queue_depth(sdev);
-
-	ufshcd_get_lu_power_on_wp_status(hba, sdev);
-
-	ufshcd_setup_links(hba, sdev);
-
-	return 0;
-}
-
-/**
- * ufshcd_change_queue_depth - change queue depth
- * @sdev: pointer to SCSI device
- * @depth: required depth to set
- *
- * Change queue depth and make sure the max. limits are not crossed.
- */
-static int ufshcd_change_queue_depth(struct scsi_device *sdev, int depth)
-{
-	return scsi_change_queue_depth(sdev, min(depth, sdev->host->can_queue));
-}
-
-static void ufshcd_hpb_destroy(struct ufs_hba *hba, struct scsi_device *sdev)
-{
-	/* skip well-known LU */
-	if ((sdev->lun >= UFS_UPIU_MAX_UNIT_NUM_ID) ||
-	    !(hba->dev_info.hpb_enabled) || !ufshpb_is_allowed(hba))
-		return;
-
-	ufshpb_destroy_lu(hba, sdev);
-}
-
-static void ufshcd_hpb_configure(struct ufs_hba *hba, struct scsi_device *sdev)
-{
-	/* skip well-known LU */
-	if ((sdev->lun >= UFS_UPIU_MAX_UNIT_NUM_ID) ||
-	    !(hba->dev_info.hpb_enabled) || !ufshpb_is_allowed(hba))
-		return;
-
-	ufshpb_init_hpb_lu(hba, sdev);
-}
-
-/**
- * ufshcd_slave_configure - adjust SCSI device configurations
- * @sdev: pointer to SCSI device
- */
-static int ufshcd_slave_configure(struct scsi_device *sdev)
-{
-	struct ufs_hba *hba = shost_priv(sdev->host);
-	struct request_queue *q = sdev->request_queue;
-
-	ufshcd_hpb_configure(hba, sdev);
-
-	blk_queue_update_dma_pad(q, PRDT_DATA_BYTE_COUNT_PAD - 1);
-	if (hba->quirks & UFSHCD_QUIRK_ALIGN_SG_WITH_PAGE_SIZE)
-		blk_queue_update_dma_alignment(q, PAGE_SIZE - 1);
-	/*
-	 * Block runtime-pm until all consumers are added.
-	 * Refer ufshcd_setup_links().
-	 */
-	if (is_device_wlun(sdev))
-		pm_runtime_get_noresume(&sdev->sdev_gendev);
-	else if (ufshcd_is_rpm_autosuspend_allowed(hba))
-		sdev->rpm_autosuspend = 1;
-	/*
-	 * Do not print messages during runtime PM to avoid never-ending cycles
-	 * of messages written back to storage by user space causing runtime
-	 * resume, causing more messages and so on.
-	 */
-	sdev->silence_suspend = 1;
-
-	ufshcd_crypto_register(hba, q);
-
-	return 0;
-}
-
-/**
- * ufshcd_slave_destroy - remove SCSI device configurations
- * @sdev: pointer to SCSI device
- */
-static void ufshcd_slave_destroy(struct scsi_device *sdev)
-{
-	struct ufs_hba *hba;
-	unsigned long flags;
-
-	hba = shost_priv(sdev->host);
-
-	ufshcd_hpb_destroy(hba, sdev);
-
-	/* Drop the reference as it won't be needed anymore */
-	if (ufshcd_scsi_to_upiu_lun(sdev->lun) == UFS_UPIU_UFS_DEVICE_WLUN) {
-		spin_lock_irqsave(hba->host->host_lock, flags);
-		hba->ufs_device_wlun = NULL;
-		spin_unlock_irqrestore(hba->host->host_lock, flags);
-	} else if (hba->ufs_device_wlun) {
-		struct device *supplier = NULL;
-
-		/* Ensure UFS Device WLUN exists and does not disappear */
-		spin_lock_irqsave(hba->host->host_lock, flags);
-		if (hba->ufs_device_wlun) {
-			supplier = &hba->ufs_device_wlun->sdev_gendev;
-			get_device(supplier);
-		}
-		spin_unlock_irqrestore(hba->host->host_lock, flags);
-
-		if (supplier) {
-			/*
-			 * If a LUN fails to probe (e.g. absent BOOT WLUN), the
-			 * device will not have been registered but can still
-			 * have a device link holding a reference to the device.
-			 */
-			device_link_remove(&sdev->sdev_gendev, supplier);
-			put_device(supplier);
-		}
-	}
-}
-
-/**
- * ufshcd_scsi_cmd_status - Update SCSI command result based on SCSI status
- * @lrbp: pointer to local reference block of completed command
- * @scsi_status: SCSI command status
- *
- * Returns value base on SCSI command status
- */
-static inline int
-ufshcd_scsi_cmd_status(struct ufshcd_lrb *lrbp, int scsi_status)
-{
-	int result = 0;
-
-	switch (scsi_status) {
-	case SAM_STAT_CHECK_CONDITION:
-		ufshcd_copy_sense_data(lrbp);
-		fallthrough;
-	case SAM_STAT_GOOD:
-		result |= DID_OK << 16 | scsi_status;
-		break;
-	case SAM_STAT_TASK_SET_FULL:
-	case SAM_STAT_BUSY:
-	case SAM_STAT_TASK_ABORTED:
-		ufshcd_copy_sense_data(lrbp);
-		result |= scsi_status;
-		break;
-	default:
-		result |= DID_ERROR << 16;
-		break;
-	} /* end of switch */
-
-	return result;
-}
-
-/**
- * ufshcd_transfer_rsp_status - Get overall status of the response
- * @hba: per adapter instance
- * @lrbp: pointer to local reference block of completed command
- *
- * Returns result of the command to notify SCSI midlayer
- */
-static inline int
-ufshcd_transfer_rsp_status(struct ufs_hba *hba, struct ufshcd_lrb *lrbp)
-{
-	int result = 0;
-	int scsi_status;
-	enum utp_ocs ocs;
-
-	/* overall command status of utrd */
-	ocs = ufshcd_get_tr_ocs(lrbp);
-
-	if (hba->quirks & UFSHCD_QUIRK_BROKEN_OCS_FATAL_ERROR) {
-		if (be32_to_cpu(lrbp->ucd_rsp_ptr->header.dword_1) &
-					MASK_RSP_UPIU_RESULT)
-			ocs = OCS_SUCCESS;
-	}
-
-	switch (ocs) {
-	case OCS_SUCCESS:
-		result = ufshcd_get_req_rsp(lrbp->ucd_rsp_ptr);
-		hba->ufs_stats.last_hibern8_exit_tstamp = ktime_set(0, 0);
-		switch (result) {
-		case UPIU_TRANSACTION_RESPONSE:
-			/*
-			 * get the response UPIU result to extract
-			 * the SCSI command status
-			 */
-			result = ufshcd_get_rsp_upiu_result(lrbp->ucd_rsp_ptr);
-
-			/*
-			 * get the result based on SCSI status response
-			 * to notify the SCSI midlayer of the command status
-			 */
-			scsi_status = result & MASK_SCSI_STATUS;
-			result = ufshcd_scsi_cmd_status(lrbp, scsi_status);
-
-			/*
-			 * Currently we are only supporting BKOPs exception
-			 * events hence we can ignore BKOPs exception event
-			 * during power management callbacks. BKOPs exception
-			 * event is not expected to be raised in runtime suspend
-			 * callback as it allows the urgent bkops.
-			 * During system suspend, we are anyway forcefully
-			 * disabling the bkops and if urgent bkops is needed
-			 * it will be enabled on system resume. Long term
-			 * solution could be to abort the system suspend if
-			 * UFS device needs urgent BKOPs.
-			 */
-			if (!hba->pm_op_in_progress &&
-			    !ufshcd_eh_in_progress(hba) &&
-			    ufshcd_is_exception_event(lrbp->ucd_rsp_ptr))
-				/* Flushed in suspend */
-				schedule_work(&hba->eeh_work);
-
-			if (scsi_status == SAM_STAT_GOOD)
-				ufshpb_rsp_upiu(hba, lrbp);
-			break;
-		case UPIU_TRANSACTION_REJECT_UPIU:
-			/* TODO: handle Reject UPIU Response */
-			result = DID_ERROR << 16;
-			dev_err(hba->dev,
-				"Reject UPIU not fully implemented\n");
-			break;
-		default:
-			dev_err(hba->dev,
-				"Unexpected request response code = %x\n",
-				result);
-			result = DID_ERROR << 16;
-			break;
-		}
-		break;
-	case OCS_ABORTED:
-		result |= DID_ABORT << 16;
-		break;
-	case OCS_INVALID_COMMAND_STATUS:
-		result |= DID_REQUEUE << 16;
-		break;
-	case OCS_INVALID_CMD_TABLE_ATTR:
-	case OCS_INVALID_PRDT_ATTR:
-	case OCS_MISMATCH_DATA_BUF_SIZE:
-	case OCS_MISMATCH_RESP_UPIU_SIZE:
-	case OCS_PEER_COMM_FAILURE:
-	case OCS_FATAL_ERROR:
-	case OCS_DEVICE_FATAL_ERROR:
-	case OCS_INVALID_CRYPTO_CONFIG:
-	case OCS_GENERAL_CRYPTO_ERROR:
-	default:
-		result |= DID_ERROR << 16;
-		dev_err(hba->dev,
-				"OCS error from controller = %x for tag %d\n",
-				ocs, lrbp->task_tag);
-		ufshcd_print_evt_hist(hba);
-		ufshcd_print_host_state(hba);
-		break;
-	} /* end of switch */
-
-	if ((host_byte(result) != DID_OK) &&
-	    (host_byte(result) != DID_REQUEUE) && !hba->silence_err_logs)
-		ufshcd_print_trs(hba, 1 << lrbp->task_tag, true);
-	return result;
-}
-
-static bool ufshcd_is_auto_hibern8_error(struct ufs_hba *hba,
-					 u32 intr_mask)
-{
-	if (!ufshcd_is_auto_hibern8_supported(hba) ||
-	    !ufshcd_is_auto_hibern8_enabled(hba))
-		return false;
-
-	if (!(intr_mask & UFSHCD_UIC_HIBERN8_MASK))
-		return false;
-
-	if (hba->active_uic_cmd &&
-	    (hba->active_uic_cmd->command == UIC_CMD_DME_HIBER_ENTER ||
-	    hba->active_uic_cmd->command == UIC_CMD_DME_HIBER_EXIT))
-		return false;
-
-	return true;
-}
-
-/**
- * ufshcd_uic_cmd_compl - handle completion of uic command
- * @hba: per adapter instance
- * @intr_status: interrupt status generated by the controller
- *
- * Returns
- *  IRQ_HANDLED - If interrupt is valid
- *  IRQ_NONE    - If invalid interrupt
- */
-static irqreturn_t ufshcd_uic_cmd_compl(struct ufs_hba *hba, u32 intr_status)
-{
-	irqreturn_t retval = IRQ_NONE;
-
-	spin_lock(hba->host->host_lock);
-	if (ufshcd_is_auto_hibern8_error(hba, intr_status))
-		hba->errors |= (UFSHCD_UIC_HIBERN8_MASK & intr_status);
-
-	if ((intr_status & UIC_COMMAND_COMPL) && hba->active_uic_cmd) {
-		hba->active_uic_cmd->argument2 |=
-			ufshcd_get_uic_cmd_result(hba);
-		hba->active_uic_cmd->argument3 =
-			ufshcd_get_dme_attr_val(hba);
-		if (!hba->uic_async_done)
-			hba->active_uic_cmd->cmd_active = 0;
-		complete(&hba->active_uic_cmd->done);
-		retval = IRQ_HANDLED;
-	}
-
-	if ((intr_status & UFSHCD_UIC_PWR_MASK) && hba->uic_async_done) {
-		hba->active_uic_cmd->cmd_active = 0;
-		complete(hba->uic_async_done);
-		retval = IRQ_HANDLED;
-	}
-
-	if (retval == IRQ_HANDLED)
-		ufshcd_add_uic_command_trace(hba, hba->active_uic_cmd,
-					     UFS_CMD_COMP);
-	spin_unlock(hba->host->host_lock);
-	return retval;
-}
-
-/* Release the resources allocated for processing a SCSI command. */
-static void ufshcd_release_scsi_cmd(struct ufs_hba *hba,
-				    struct ufshcd_lrb *lrbp)
-{
-	struct scsi_cmnd *cmd = lrbp->cmd;
-
-	scsi_dma_unmap(cmd);
-	lrbp->cmd = NULL;	/* Mark the command as completed. */
-	ufshcd_release(hba);
-	ufshcd_clk_scaling_update_busy(hba);
-}
-
-/**
- * __ufshcd_transfer_req_compl - handle SCSI and query command completion
- * @hba: per adapter instance
- * @completed_reqs: bitmask that indicates which requests to complete
- */
-static void __ufshcd_transfer_req_compl(struct ufs_hba *hba,
-					unsigned long completed_reqs)
-{
-	struct ufshcd_lrb *lrbp;
-	struct scsi_cmnd *cmd;
-	int index;
-
-	for_each_set_bit(index, &completed_reqs, hba->nutrs) {
-		lrbp = &hba->lrb[index];
-		lrbp->compl_time_stamp = ktime_get();
-		cmd = lrbp->cmd;
-		if (cmd) {
-			if (unlikely(ufshcd_should_inform_monitor(hba, lrbp)))
-				ufshcd_update_monitor(hba, lrbp);
-			ufshcd_add_command_trace(hba, index, UFS_CMD_COMP);
-			cmd->result = ufshcd_transfer_rsp_status(hba, lrbp);
-			ufshcd_release_scsi_cmd(hba, lrbp);
-			/* Do not touch lrbp after scsi done */
-			scsi_done(cmd);
-		} else if (lrbp->command_type == UTP_CMD_TYPE_DEV_MANAGE ||
-			lrbp->command_type == UTP_CMD_TYPE_UFS_STORAGE) {
-			if (hba->dev_cmd.complete) {
-				ufshcd_add_command_trace(hba, index,
-							 UFS_DEV_COMP);
-				complete(hba->dev_cmd.complete);
-				ufshcd_clk_scaling_update_busy(hba);
-			}
-		}
-	}
-}
-
-/*
- * Returns > 0 if one or more commands have been completed or 0 if no
- * requests have been completed.
- */
-static int ufshcd_poll(struct Scsi_Host *shost, unsigned int queue_num)
-{
-	struct ufs_hba *hba = shost_priv(shost);
-	unsigned long completed_reqs, flags;
-	u32 tr_doorbell;
-
-	spin_lock_irqsave(&hba->outstanding_lock, flags);
-	tr_doorbell = ufshcd_readl(hba, REG_UTP_TRANSFER_REQ_DOOR_BELL);
-	completed_reqs = ~tr_doorbell & hba->outstanding_reqs;
-	WARN_ONCE(completed_reqs & ~hba->outstanding_reqs,
-		  "completed: %#lx; outstanding: %#lx\n", completed_reqs,
-		  hba->outstanding_reqs);
-	hba->outstanding_reqs &= ~completed_reqs;
-	spin_unlock_irqrestore(&hba->outstanding_lock, flags);
-
-	if (completed_reqs)
-		__ufshcd_transfer_req_compl(hba, completed_reqs);
-
-	return completed_reqs;
-}
-
-/**
- * ufshcd_transfer_req_compl - handle SCSI and query command completion
- * @hba: per adapter instance
- *
- * Returns
- *  IRQ_HANDLED - If interrupt is valid
- *  IRQ_NONE    - If invalid interrupt
- */
-static irqreturn_t ufshcd_transfer_req_compl(struct ufs_hba *hba)
-{
-	/* Resetting interrupt aggregation counters first and reading the
-	 * DOOR_BELL afterward allows us to handle all the completed requests.
-	 * In order to prevent other interrupts starvation the DB is read once
-	 * after reset. The down side of this solution is the possibility of
-	 * false interrupt if device completes another request after resetting
-	 * aggregation and before reading the DB.
-	 */
-	if (ufshcd_is_intr_aggr_allowed(hba) &&
-	    !(hba->quirks & UFSHCI_QUIRK_SKIP_RESET_INTR_AGGR))
-		ufshcd_reset_intr_aggr(hba);
-
-	if (ufs_fail_completion())
-		return IRQ_HANDLED;
-
-	/*
-	 * Ignore the ufshcd_poll() return value and return IRQ_HANDLED since we
-	 * do not want polling to trigger spurious interrupt complaints.
-	 */
-	ufshcd_poll(hba->host, 0);
-
-	return IRQ_HANDLED;
-}
-
-int __ufshcd_write_ee_control(struct ufs_hba *hba, u32 ee_ctrl_mask)
-{
-	return ufshcd_query_attr_retry(hba, UPIU_QUERY_OPCODE_WRITE_ATTR,
-				       QUERY_ATTR_IDN_EE_CONTROL, 0, 0,
-				       &ee_ctrl_mask);
-}
-
-int ufshcd_write_ee_control(struct ufs_hba *hba)
-{
-	int err;
-
-	mutex_lock(&hba->ee_ctrl_mutex);
-	err = __ufshcd_write_ee_control(hba, hba->ee_ctrl_mask);
-	mutex_unlock(&hba->ee_ctrl_mutex);
-	if (err)
-		dev_err(hba->dev, "%s: failed to write ee control %d\n",
-			__func__, err);
-	return err;
-}
-
-int ufshcd_update_ee_control(struct ufs_hba *hba, u16 *mask, u16 *other_mask,
-			     u16 set, u16 clr)
-{
-	u16 new_mask, ee_ctrl_mask;
-	int err = 0;
-
-	mutex_lock(&hba->ee_ctrl_mutex);
-	new_mask = (*mask & ~clr) | set;
-	ee_ctrl_mask = new_mask | *other_mask;
-	if (ee_ctrl_mask != hba->ee_ctrl_mask)
-		err = __ufshcd_write_ee_control(hba, ee_ctrl_mask);
-	/* Still need to update 'mask' even if 'ee_ctrl_mask' was unchanged */
-	if (!err) {
-		hba->ee_ctrl_mask = ee_ctrl_mask;
-		*mask = new_mask;
-	}
-	mutex_unlock(&hba->ee_ctrl_mutex);
-	return err;
-}
-
-/**
- * ufshcd_disable_ee - disable exception event
- * @hba: per-adapter instance
- * @mask: exception event to disable
- *
- * Disables exception event in the device so that the EVENT_ALERT
- * bit is not set.
- *
- * Returns zero on success, non-zero error value on failure.
- */
-static inline int ufshcd_disable_ee(struct ufs_hba *hba, u16 mask)
-{
-	return ufshcd_update_ee_drv_mask(hba, 0, mask);
-}
-
-/**
- * ufshcd_enable_ee - enable exception event
- * @hba: per-adapter instance
- * @mask: exception event to enable
- *
- * Enable corresponding exception event in the device to allow
- * device to alert host in critical scenarios.
- *
- * Returns zero on success, non-zero error value on failure.
- */
-static inline int ufshcd_enable_ee(struct ufs_hba *hba, u16 mask)
-{
-	return ufshcd_update_ee_drv_mask(hba, mask, 0);
-}
-
-/**
- * ufshcd_enable_auto_bkops - Allow device managed BKOPS
- * @hba: per-adapter instance
- *
- * Allow device to manage background operations on its own. Enabling
- * this might lead to inconsistent latencies during normal data transfers
- * as the device is allowed to manage its own way of handling background
- * operations.
- *
- * Returns zero on success, non-zero on failure.
- */
-static int ufshcd_enable_auto_bkops(struct ufs_hba *hba)
-{
-	int err = 0;
-
-	if (hba->auto_bkops_enabled)
-		goto out;
-
-	err = ufshcd_query_flag_retry(hba, UPIU_QUERY_OPCODE_SET_FLAG,
-			QUERY_FLAG_IDN_BKOPS_EN, 0, NULL);
-	if (err) {
-		dev_err(hba->dev, "%s: failed to enable bkops %d\n",
-				__func__, err);
-		goto out;
-	}
-
-	hba->auto_bkops_enabled = true;
-	trace_ufshcd_auto_bkops_state(dev_name(hba->dev), "Enabled");
-
-	/* No need of URGENT_BKOPS exception from the device */
-	err = ufshcd_disable_ee(hba, MASK_EE_URGENT_BKOPS);
-	if (err)
-		dev_err(hba->dev, "%s: failed to disable exception event %d\n",
-				__func__, err);
-out:
-	return err;
-}
-
-/**
- * ufshcd_disable_auto_bkops - block device in doing background operations
- * @hba: per-adapter instance
- *
- * Disabling background operations improves command response latency but
- * has drawback of device moving into critical state where the device is
- * not-operable. Make sure to call ufshcd_enable_auto_bkops() whenever the
- * host is idle so that BKOPS are managed effectively without any negative
- * impacts.
- *
- * Returns zero on success, non-zero on failure.
- */
-static int ufshcd_disable_auto_bkops(struct ufs_hba *hba)
-{
-	int err = 0;
-
-	if (!hba->auto_bkops_enabled)
-		goto out;
-
-	/*
-	 * If host assisted BKOPs is to be enabled, make sure
-	 * urgent bkops exception is allowed.
-	 */
-	err = ufshcd_enable_ee(hba, MASK_EE_URGENT_BKOPS);
-	if (err) {
-		dev_err(hba->dev, "%s: failed to enable exception event %d\n",
-				__func__, err);
-		goto out;
-	}
-
-	err = ufshcd_query_flag_retry(hba, UPIU_QUERY_OPCODE_CLEAR_FLAG,
-			QUERY_FLAG_IDN_BKOPS_EN, 0, NULL);
-	if (err) {
-		dev_err(hba->dev, "%s: failed to disable bkops %d\n",
-				__func__, err);
-		ufshcd_disable_ee(hba, MASK_EE_URGENT_BKOPS);
-		goto out;
-	}
-
-	hba->auto_bkops_enabled = false;
-	trace_ufshcd_auto_bkops_state(dev_name(hba->dev), "Disabled");
-	hba->is_urgent_bkops_lvl_checked = false;
-out:
-	return err;
-}
-
-/**
- * ufshcd_force_reset_auto_bkops - force reset auto bkops state
- * @hba: per adapter instance
- *
- * After a device reset the device may toggle the BKOPS_EN flag
- * to default value. The s/w tracking variables should be updated
- * as well. This function would change the auto-bkops state based on
- * UFSHCD_CAP_KEEP_AUTO_BKOPS_ENABLED_EXCEPT_SUSPEND.
- */
-static void ufshcd_force_reset_auto_bkops(struct ufs_hba *hba)
-{
-	if (ufshcd_keep_autobkops_enabled_except_suspend(hba)) {
-		hba->auto_bkops_enabled = false;
-		hba->ee_ctrl_mask |= MASK_EE_URGENT_BKOPS;
-		ufshcd_enable_auto_bkops(hba);
-	} else {
-		hba->auto_bkops_enabled = true;
-		hba->ee_ctrl_mask &= ~MASK_EE_URGENT_BKOPS;
-		ufshcd_disable_auto_bkops(hba);
-	}
-	hba->urgent_bkops_lvl = BKOPS_STATUS_PERF_IMPACT;
-	hba->is_urgent_bkops_lvl_checked = false;
-}
-
-static inline int ufshcd_get_bkops_status(struct ufs_hba *hba, u32 *status)
-{
-	return ufshcd_query_attr_retry(hba, UPIU_QUERY_OPCODE_READ_ATTR,
-			QUERY_ATTR_IDN_BKOPS_STATUS, 0, 0, status);
-}
-
-/**
- * ufshcd_bkops_ctrl - control the auto bkops based on current bkops status
- * @hba: per-adapter instance
- * @status: bkops_status value
- *
- * Read the bkops_status from the UFS device and Enable fBackgroundOpsEn
- * flag in the device to permit background operations if the device
- * bkops_status is greater than or equal to "status" argument passed to
- * this function, disable otherwise.
- *
- * Returns 0 for success, non-zero in case of failure.
- *
- * NOTE: Caller of this function can check the "hba->auto_bkops_enabled" flag
- * to know whether auto bkops is enabled or disabled after this function
- * returns control to it.
- */
-static int ufshcd_bkops_ctrl(struct ufs_hba *hba,
-			     enum bkops_status status)
-{
-	int err;
-	u32 curr_status = 0;
-
-	err = ufshcd_get_bkops_status(hba, &curr_status);
-	if (err) {
-		dev_err(hba->dev, "%s: failed to get BKOPS status %d\n",
-				__func__, err);
-		goto out;
-	} else if (curr_status > BKOPS_STATUS_MAX) {
-		dev_err(hba->dev, "%s: invalid BKOPS status %d\n",
-				__func__, curr_status);
-		err = -EINVAL;
-		goto out;
-	}
-
-	if (curr_status >= status)
-		err = ufshcd_enable_auto_bkops(hba);
-	else
-		err = ufshcd_disable_auto_bkops(hba);
-out:
-	return err;
-}
-
-/**
- * ufshcd_urgent_bkops - handle urgent bkops exception event
- * @hba: per-adapter instance
- *
- * Enable fBackgroundOpsEn flag in the device to permit background
- * operations.
- *
- * If BKOPs is enabled, this function returns 0, 1 if the bkops in not enabled
- * and negative error value for any other failure.
- */
-static int ufshcd_urgent_bkops(struct ufs_hba *hba)
-{
-	return ufshcd_bkops_ctrl(hba, hba->urgent_bkops_lvl);
-}
-
-static inline int ufshcd_get_ee_status(struct ufs_hba *hba, u32 *status)
-{
-	return ufshcd_query_attr_retry(hba, UPIU_QUERY_OPCODE_READ_ATTR,
-			QUERY_ATTR_IDN_EE_STATUS, 0, 0, status);
-}
-
-static void ufshcd_bkops_exception_event_handler(struct ufs_hba *hba)
-{
-	int err;
-	u32 curr_status = 0;
-
-	if (hba->is_urgent_bkops_lvl_checked)
-		goto enable_auto_bkops;
-
-	err = ufshcd_get_bkops_status(hba, &curr_status);
-	if (err) {
-		dev_err(hba->dev, "%s: failed to get BKOPS status %d\n",
-				__func__, err);
-		goto out;
-	}
-
-	/*
-	 * We are seeing that some devices are raising the urgent bkops
-	 * exception events even when BKOPS status doesn't indicate performace
-	 * impacted or critical. Handle these device by determining their urgent
-	 * bkops status at runtime.
-	 */
-	if (curr_status < BKOPS_STATUS_PERF_IMPACT) {
-		dev_err(hba->dev, "%s: device raised urgent BKOPS exception for bkops status %d\n",
-				__func__, curr_status);
-		/* update the current status as the urgent bkops level */
-		hba->urgent_bkops_lvl = curr_status;
-		hba->is_urgent_bkops_lvl_checked = true;
-	}
-
-enable_auto_bkops:
-	err = ufshcd_enable_auto_bkops(hba);
-out:
-	if (err < 0)
-		dev_err(hba->dev, "%s: failed to handle urgent bkops %d\n",
-				__func__, err);
-}
-
-static void ufshcd_temp_exception_event_handler(struct ufs_hba *hba, u16 status)
-{
-	u32 value;
-
-	if (ufshcd_query_attr_retry(hba, UPIU_QUERY_OPCODE_READ_ATTR,
-				QUERY_ATTR_IDN_CASE_ROUGH_TEMP, 0, 0, &value))
-		return;
-
-	dev_info(hba->dev, "exception Tcase %d\n", value - 80);
-
-	ufs_hwmon_notify_event(hba, status & MASK_EE_URGENT_TEMP);
-
-	/*
-	 * A placeholder for the platform vendors to add whatever additional
-	 * steps required
-	 */
-}
-
-static int __ufshcd_wb_toggle(struct ufs_hba *hba, bool set, enum flag_idn idn)
-{
-	u8 index;
-	enum query_opcode opcode = set ? UPIU_QUERY_OPCODE_SET_FLAG :
-				   UPIU_QUERY_OPCODE_CLEAR_FLAG;
-
-	index = ufshcd_wb_get_query_index(hba);
-	return ufshcd_query_flag_retry(hba, opcode, idn, index, NULL);
-}
-
-int ufshcd_wb_toggle(struct ufs_hba *hba, bool enable)
-{
-	int ret;
-
-	if (!ufshcd_is_wb_allowed(hba))
-		return 0;
-
-	if (!(enable ^ hba->dev_info.wb_enabled))
-		return 0;
-
-	ret = __ufshcd_wb_toggle(hba, enable, QUERY_FLAG_IDN_WB_EN);
-	if (ret) {
-		dev_err(hba->dev, "%s Write Booster %s failed %d\n",
-			__func__, enable ? "enable" : "disable", ret);
-		return ret;
-	}
-
-	hba->dev_info.wb_enabled = enable;
-	dev_info(hba->dev, "%s Write Booster %s\n",
-			__func__, enable ? "enabled" : "disabled");
-
-	return ret;
-}
-
-static void ufshcd_wb_toggle_flush_during_h8(struct ufs_hba *hba, bool set)
-{
-	int ret;
-
-	ret = __ufshcd_wb_toggle(hba, set,
-			QUERY_FLAG_IDN_WB_BUFF_FLUSH_DURING_HIBERN8);
-	if (ret) {
-		dev_err(hba->dev, "%s: WB-Buf Flush during H8 %s failed: %d\n",
-			__func__, set ? "enable" : "disable", ret);
-		return;
-	}
-	dev_dbg(hba->dev, "%s WB-Buf Flush during H8 %s\n",
-			__func__, set ? "enabled" : "disabled");
-}
-
-static inline void ufshcd_wb_toggle_flush(struct ufs_hba *hba, bool enable)
-{
-	int ret;
-
-	if (!ufshcd_is_wb_allowed(hba) ||
-	    hba->dev_info.wb_buf_flush_enabled == enable)
-		return;
-
-	ret = __ufshcd_wb_toggle(hba, enable, QUERY_FLAG_IDN_WB_BUFF_FLUSH_EN);
-	if (ret) {
-		dev_err(hba->dev, "%s WB-Buf Flush %s failed %d\n", __func__,
-			enable ? "enable" : "disable", ret);
-		return;
-	}
-
-	hba->dev_info.wb_buf_flush_enabled = enable;
-
-	dev_dbg(hba->dev, "%s WB-Buf Flush %s\n",
-			__func__, enable ? "enabled" : "disabled");
-}
-
-static bool ufshcd_wb_presrv_usrspc_keep_vcc_on(struct ufs_hba *hba,
-						u32 avail_buf)
-{
-	u32 cur_buf;
-	int ret;
-	u8 index;
-
-	index = ufshcd_wb_get_query_index(hba);
-	ret = ufshcd_query_attr_retry(hba, UPIU_QUERY_OPCODE_READ_ATTR,
-					      QUERY_ATTR_IDN_CURR_WB_BUFF_SIZE,
-					      index, 0, &cur_buf);
-	if (ret) {
-		dev_err(hba->dev, "%s dCurWriteBoosterBufferSize read failed %d\n",
-			__func__, ret);
-		return false;
-	}
-
-	if (!cur_buf) {
-		dev_info(hba->dev, "dCurWBBuf: %d WB disabled until free-space is available\n",
-			 cur_buf);
-		return false;
-	}
-	/* Let it continue to flush when available buffer exceeds threshold */
-	return avail_buf < hba->vps->wb_flush_threshold;
-}
-
-static void ufshcd_wb_force_disable(struct ufs_hba *hba)
-{
-	if (!(hba->quirks & UFSHCI_QUIRK_SKIP_MANUAL_WB_FLUSH_CTRL))
-		ufshcd_wb_toggle_flush(hba, false);
-
-	ufshcd_wb_toggle_flush_during_h8(hba, false);
-	ufshcd_wb_toggle(hba, false);
-	hba->caps &= ~UFSHCD_CAP_WB_EN;
-
-	dev_info(hba->dev, "%s: WB force disabled\n", __func__);
-}
-
-static bool ufshcd_is_wb_buf_lifetime_available(struct ufs_hba *hba)
-{
-	u32 lifetime;
-	int ret;
-	u8 index;
-
-	index = ufshcd_wb_get_query_index(hba);
-	ret = ufshcd_query_attr_retry(hba, UPIU_QUERY_OPCODE_READ_ATTR,
-				      QUERY_ATTR_IDN_WB_BUFF_LIFE_TIME_EST,
-				      index, 0, &lifetime);
-	if (ret) {
-		dev_err(hba->dev,
-			"%s: bWriteBoosterBufferLifeTimeEst read failed %d\n",
-			__func__, ret);
-		return false;
-	}
-
-	if (lifetime == UFS_WB_EXCEED_LIFETIME) {
-		dev_err(hba->dev, "%s: WB buf lifetime is exhausted 0x%02X\n",
-			__func__, lifetime);
-		return false;
-	}
-
-	dev_dbg(hba->dev, "%s: WB buf lifetime is 0x%02X\n",
-		__func__, lifetime);
-
-	return true;
-}
-
-static bool ufshcd_wb_need_flush(struct ufs_hba *hba)
-{
-	int ret;
-	u32 avail_buf;
-	u8 index;
-
-	if (!ufshcd_is_wb_allowed(hba))
-		return false;
-
-	if (!ufshcd_is_wb_buf_lifetime_available(hba)) {
-		ufshcd_wb_force_disable(hba);
-		return false;
-	}
-
-	/*
-	 * The ufs device needs the vcc to be ON to flush.
-	 * With user-space reduction enabled, it's enough to enable flush
-	 * by checking only the available buffer. The threshold
-	 * defined here is > 90% full.
-	 * With user-space preserved enabled, the current-buffer
-	 * should be checked too because the wb buffer size can reduce
-	 * when disk tends to be full. This info is provided by current
-	 * buffer (dCurrentWriteBoosterBufferSize). There's no point in
-	 * keeping vcc on when current buffer is empty.
-	 */
-	index = ufshcd_wb_get_query_index(hba);
-	ret = ufshcd_query_attr_retry(hba, UPIU_QUERY_OPCODE_READ_ATTR,
-				      QUERY_ATTR_IDN_AVAIL_WB_BUFF_SIZE,
-				      index, 0, &avail_buf);
-	if (ret) {
-		dev_warn(hba->dev, "%s dAvailableWriteBoosterBufferSize read failed %d\n",
-			 __func__, ret);
-		return false;
-	}
-
-	if (!hba->dev_info.b_presrv_uspc_en)
-		return avail_buf <= UFS_WB_BUF_REMAIN_PERCENT(10);
-
-	return ufshcd_wb_presrv_usrspc_keep_vcc_on(hba, avail_buf);
-}
-
-static void ufshcd_rpm_dev_flush_recheck_work(struct work_struct *work)
-{
-	struct ufs_hba *hba = container_of(to_delayed_work(work),
-					   struct ufs_hba,
-					   rpm_dev_flush_recheck_work);
-	/*
-	 * To prevent unnecessary VCC power drain after device finishes
-	 * WriteBooster buffer flush or Auto BKOPs, force runtime resume
-	 * after a certain delay to recheck the threshold by next runtime
-	 * suspend.
-	 */
-	ufshcd_rpm_get_sync(hba);
-	ufshcd_rpm_put_sync(hba);
-}
-
-/**
- * ufshcd_exception_event_handler - handle exceptions raised by device
- * @work: pointer to work data
- *
- * Read bExceptionEventStatus attribute from the device and handle the
- * exception event accordingly.
- */
-static void ufshcd_exception_event_handler(struct work_struct *work)
-{
-	struct ufs_hba *hba;
-	int err;
-	u32 status = 0;
-	hba = container_of(work, struct ufs_hba, eeh_work);
-
-	ufshcd_scsi_block_requests(hba);
-	err = ufshcd_get_ee_status(hba, &status);
-	if (err) {
-		dev_err(hba->dev, "%s: failed to get exception status %d\n",
-				__func__, err);
-		goto out;
-	}
-
-	trace_ufshcd_exception_event(dev_name(hba->dev), status);
-
-	if (status & hba->ee_drv_mask & MASK_EE_URGENT_BKOPS)
-		ufshcd_bkops_exception_event_handler(hba);
-
-	if (status & hba->ee_drv_mask & MASK_EE_URGENT_TEMP)
-		ufshcd_temp_exception_event_handler(hba, status);
-
-	ufs_debugfs_exception_event(hba, status);
-out:
-	ufshcd_scsi_unblock_requests(hba);
-}
-
-/* Complete requests that have door-bell cleared */
-static void ufshcd_complete_requests(struct ufs_hba *hba)
-{
-	ufshcd_transfer_req_compl(hba);
-	ufshcd_tmc_handler(hba);
-}
-
-/**
- * ufshcd_quirk_dl_nac_errors - This function checks if error handling is
- *				to recover from the DL NAC errors or not.
- * @hba: per-adapter instance
- *
- * Returns true if error handling is required, false otherwise
- */
-static bool ufshcd_quirk_dl_nac_errors(struct ufs_hba *hba)
-{
-	unsigned long flags;
-	bool err_handling = true;
-
-	spin_lock_irqsave(hba->host->host_lock, flags);
-	/*
-	 * UFS_DEVICE_QUIRK_RECOVERY_FROM_DL_NAC_ERRORS only workaround the
-	 * device fatal error and/or DL NAC & REPLAY timeout errors.
-	 */
-	if (hba->saved_err & (CONTROLLER_FATAL_ERROR | SYSTEM_BUS_FATAL_ERROR))
-		goto out;
-
-	if ((hba->saved_err & DEVICE_FATAL_ERROR) ||
-	    ((hba->saved_err & UIC_ERROR) &&
-	     (hba->saved_uic_err & UFSHCD_UIC_DL_TCx_REPLAY_ERROR)))
-		goto out;
-
-	if ((hba->saved_err & UIC_ERROR) &&
-	    (hba->saved_uic_err & UFSHCD_UIC_DL_NAC_RECEIVED_ERROR)) {
-		int err;
-		/*
-		 * wait for 50ms to see if we can get any other errors or not.
-		 */
-		spin_unlock_irqrestore(hba->host->host_lock, flags);
-		msleep(50);
-		spin_lock_irqsave(hba->host->host_lock, flags);
-
-		/*
-		 * now check if we have got any other severe errors other than
-		 * DL NAC error?
-		 */
-		if ((hba->saved_err & INT_FATAL_ERRORS) ||
-		    ((hba->saved_err & UIC_ERROR) &&
-		    (hba->saved_uic_err & ~UFSHCD_UIC_DL_NAC_RECEIVED_ERROR)))
-			goto out;
-
-		/*
-		 * As DL NAC is the only error received so far, send out NOP
-		 * command to confirm if link is still active or not.
-		 *   - If we don't get any response then do error recovery.
-		 *   - If we get response then clear the DL NAC error bit.
-		 */
-
-		spin_unlock_irqrestore(hba->host->host_lock, flags);
-		err = ufshcd_verify_dev_init(hba);
-		spin_lock_irqsave(hba->host->host_lock, flags);
-
-		if (err)
-			goto out;
-
-		/* Link seems to be alive hence ignore the DL NAC errors */
-		if (hba->saved_uic_err == UFSHCD_UIC_DL_NAC_RECEIVED_ERROR)
-			hba->saved_err &= ~UIC_ERROR;
-		/* clear NAC error */
-		hba->saved_uic_err &= ~UFSHCD_UIC_DL_NAC_RECEIVED_ERROR;
-		if (!hba->saved_uic_err)
-			err_handling = false;
-	}
-out:
-	spin_unlock_irqrestore(hba->host->host_lock, flags);
-	return err_handling;
-}
-
-/* host lock must be held before calling this func */
-static inline bool ufshcd_is_saved_err_fatal(struct ufs_hba *hba)
-{
-	return (hba->saved_uic_err & UFSHCD_UIC_DL_PA_INIT_ERROR) ||
-	       (hba->saved_err & (INT_FATAL_ERRORS | UFSHCD_UIC_HIBERN8_MASK));
-}
-
-void ufshcd_schedule_eh_work(struct ufs_hba *hba)
-{
-	lockdep_assert_held(hba->host->host_lock);
-
-	/* handle fatal errors only when link is not in error state */
-	if (hba->ufshcd_state != UFSHCD_STATE_ERROR) {
-		if (hba->force_reset || ufshcd_is_link_broken(hba) ||
-		    ufshcd_is_saved_err_fatal(hba))
-			hba->ufshcd_state = UFSHCD_STATE_EH_SCHEDULED_FATAL;
-		else
-			hba->ufshcd_state = UFSHCD_STATE_EH_SCHEDULED_NON_FATAL;
-		queue_work(hba->eh_wq, &hba->eh_work);
-	}
-}
-
-static void ufshcd_clk_scaling_allow(struct ufs_hba *hba, bool allow)
-{
-	down_write(&hba->clk_scaling_lock);
-	hba->clk_scaling.is_allowed = allow;
-	up_write(&hba->clk_scaling_lock);
-}
-
-static void ufshcd_clk_scaling_suspend(struct ufs_hba *hba, bool suspend)
-{
-	if (suspend) {
-		if (hba->clk_scaling.is_enabled)
-			ufshcd_suspend_clkscaling(hba);
-		ufshcd_clk_scaling_allow(hba, false);
-	} else {
-		ufshcd_clk_scaling_allow(hba, true);
-		if (hba->clk_scaling.is_enabled)
-			ufshcd_resume_clkscaling(hba);
-	}
-}
-
-static void ufshcd_err_handling_prepare(struct ufs_hba *hba)
-{
-	ufshcd_rpm_get_sync(hba);
-	if (pm_runtime_status_suspended(&hba->ufs_device_wlun->sdev_gendev) ||
-	    hba->is_sys_suspended) {
-		enum ufs_pm_op pm_op;
-
-		/*
-		 * Don't assume anything of resume, if
-		 * resume fails, irq and clocks can be OFF, and powers
-		 * can be OFF or in LPM.
-		 */
-		ufshcd_setup_hba_vreg(hba, true);
-		ufshcd_enable_irq(hba);
-		ufshcd_setup_vreg(hba, true);
-		ufshcd_config_vreg_hpm(hba, hba->vreg_info.vccq);
-		ufshcd_config_vreg_hpm(hba, hba->vreg_info.vccq2);
-		ufshcd_hold(hba, false);
-		if (!ufshcd_is_clkgating_allowed(hba))
-			ufshcd_setup_clocks(hba, true);
-		ufshcd_release(hba);
-		pm_op = hba->is_sys_suspended ? UFS_SYSTEM_PM : UFS_RUNTIME_PM;
-		ufshcd_vops_resume(hba, pm_op);
-	} else {
-		ufshcd_hold(hba, false);
-		if (ufshcd_is_clkscaling_supported(hba) &&
-		    hba->clk_scaling.is_enabled)
-			ufshcd_suspend_clkscaling(hba);
-		ufshcd_clk_scaling_allow(hba, false);
-	}
-	ufshcd_scsi_block_requests(hba);
-	/* Drain ufshcd_queuecommand() */
-	synchronize_rcu();
-	cancel_work_sync(&hba->eeh_work);
-}
-
-static void ufshcd_err_handling_unprepare(struct ufs_hba *hba)
-{
-	ufshcd_scsi_unblock_requests(hba);
-	ufshcd_release(hba);
-	if (ufshcd_is_clkscaling_supported(hba))
-		ufshcd_clk_scaling_suspend(hba, false);
-	ufshcd_rpm_put(hba);
-}
-
-static inline bool ufshcd_err_handling_should_stop(struct ufs_hba *hba)
-{
-	return (!hba->is_powered || hba->shutting_down ||
-		!hba->ufs_device_wlun ||
-		hba->ufshcd_state == UFSHCD_STATE_ERROR ||
-		(!(hba->saved_err || hba->saved_uic_err || hba->force_reset ||
-		   ufshcd_is_link_broken(hba))));
-}
-
-#ifdef CONFIG_PM
-static void ufshcd_recover_pm_error(struct ufs_hba *hba)
-{
-	struct Scsi_Host *shost = hba->host;
-	struct scsi_device *sdev;
-	struct request_queue *q;
-	int ret;
-
-	hba->is_sys_suspended = false;
-	/*
-	 * Set RPM status of wlun device to RPM_ACTIVE,
-	 * this also clears its runtime error.
-	 */
-	ret = pm_runtime_set_active(&hba->ufs_device_wlun->sdev_gendev);
-
-	/* hba device might have a runtime error otherwise */
-	if (ret)
-		ret = pm_runtime_set_active(hba->dev);
-	/*
-	 * If wlun device had runtime error, we also need to resume those
-	 * consumer scsi devices in case any of them has failed to be
-	 * resumed due to supplier runtime resume failure. This is to unblock
-	 * blk_queue_enter in case there are bios waiting inside it.
-	 */
-	if (!ret) {
-		shost_for_each_device(sdev, shost) {
-			q = sdev->request_queue;
-			if (q->dev && (q->rpm_status == RPM_SUSPENDED ||
-				       q->rpm_status == RPM_SUSPENDING))
-				pm_request_resume(q->dev);
-		}
-	}
-}
-#else
-static inline void ufshcd_recover_pm_error(struct ufs_hba *hba)
-{
-}
-#endif
-
-static bool ufshcd_is_pwr_mode_restore_needed(struct ufs_hba *hba)
-{
-	struct ufs_pa_layer_attr *pwr_info = &hba->pwr_info;
-	u32 mode;
-
-	ufshcd_dme_get(hba, UIC_ARG_MIB(PA_PWRMODE), &mode);
-
-	if (pwr_info->pwr_rx != ((mode >> PWRMODE_RX_OFFSET) & PWRMODE_MASK))
-		return true;
-
-	if (pwr_info->pwr_tx != (mode & PWRMODE_MASK))
-		return true;
-
-	return false;
-}
-
-/**
- * ufshcd_err_handler - handle UFS errors that require s/w attention
- * @work: pointer to work structure
- */
-static void ufshcd_err_handler(struct work_struct *work)
-{
-	int retries = MAX_ERR_HANDLER_RETRIES;
-	struct ufs_hba *hba;
-	unsigned long flags;
-	bool needs_restore;
-	bool needs_reset;
-	bool err_xfer;
-	bool err_tm;
-	int pmc_err;
-	int tag;
-
-	hba = container_of(work, struct ufs_hba, eh_work);
-
-	dev_info(hba->dev,
-		 "%s started; HBA state %s; powered %d; shutting down %d; saved_err = %d; saved_uic_err = %d; force_reset = %d%s\n",
-		 __func__, ufshcd_state_name[hba->ufshcd_state],
-		 hba->is_powered, hba->shutting_down, hba->saved_err,
-		 hba->saved_uic_err, hba->force_reset,
-		 ufshcd_is_link_broken(hba) ? "; link is broken" : "");
-
-	down(&hba->host_sem);
-	spin_lock_irqsave(hba->host->host_lock, flags);
-	if (ufshcd_err_handling_should_stop(hba)) {
-		if (hba->ufshcd_state != UFSHCD_STATE_ERROR)
-			hba->ufshcd_state = UFSHCD_STATE_OPERATIONAL;
-		spin_unlock_irqrestore(hba->host->host_lock, flags);
-		up(&hba->host_sem);
-		return;
-	}
-	ufshcd_set_eh_in_progress(hba);
-	spin_unlock_irqrestore(hba->host->host_lock, flags);
-	ufshcd_err_handling_prepare(hba);
-	/* Complete requests that have door-bell cleared by h/w */
-	ufshcd_complete_requests(hba);
-	spin_lock_irqsave(hba->host->host_lock, flags);
-again:
-	needs_restore = false;
-	needs_reset = false;
-	err_xfer = false;
-	err_tm = false;
-
-	if (hba->ufshcd_state != UFSHCD_STATE_ERROR)
-		hba->ufshcd_state = UFSHCD_STATE_RESET;
-	/*
-	 * A full reset and restore might have happened after preparation
-	 * is finished, double check whether we should stop.
-	 */
-	if (ufshcd_err_handling_should_stop(hba))
-		goto skip_err_handling;
-
-	if (hba->dev_quirks & UFS_DEVICE_QUIRK_RECOVERY_FROM_DL_NAC_ERRORS) {
-		bool ret;
-
-		spin_unlock_irqrestore(hba->host->host_lock, flags);
-		/* release the lock as ufshcd_quirk_dl_nac_errors() may sleep */
-		ret = ufshcd_quirk_dl_nac_errors(hba);
-		spin_lock_irqsave(hba->host->host_lock, flags);
-		if (!ret && ufshcd_err_handling_should_stop(hba))
-			goto skip_err_handling;
-	}
-
-	if ((hba->saved_err & (INT_FATAL_ERRORS | UFSHCD_UIC_HIBERN8_MASK)) ||
-	    (hba->saved_uic_err &&
-	     (hba->saved_uic_err != UFSHCD_UIC_PA_GENERIC_ERROR))) {
-		bool pr_prdt = !!(hba->saved_err & SYSTEM_BUS_FATAL_ERROR);
-
-		spin_unlock_irqrestore(hba->host->host_lock, flags);
-		ufshcd_print_host_state(hba);
-		ufshcd_print_pwr_info(hba);
-		ufshcd_print_evt_hist(hba);
-		ufshcd_print_tmrs(hba, hba->outstanding_tasks);
-		ufshcd_print_trs(hba, hba->outstanding_reqs, pr_prdt);
-		spin_lock_irqsave(hba->host->host_lock, flags);
-	}
-
-	/*
-	 * if host reset is required then skip clearing the pending
-	 * transfers forcefully because they will get cleared during
-	 * host reset and restore
-	 */
-	if (hba->force_reset || ufshcd_is_link_broken(hba) ||
-	    ufshcd_is_saved_err_fatal(hba) ||
-	    ((hba->saved_err & UIC_ERROR) &&
-	     (hba->saved_uic_err & (UFSHCD_UIC_DL_NAC_RECEIVED_ERROR |
-				    UFSHCD_UIC_DL_TCx_REPLAY_ERROR)))) {
-		needs_reset = true;
-		goto do_reset;
-	}
-
-	/*
-	 * If LINERESET was caught, UFS might have been put to PWM mode,
-	 * check if power mode restore is needed.
-	 */
-	if (hba->saved_uic_err & UFSHCD_UIC_PA_GENERIC_ERROR) {
-		hba->saved_uic_err &= ~UFSHCD_UIC_PA_GENERIC_ERROR;
-		if (!hba->saved_uic_err)
-			hba->saved_err &= ~UIC_ERROR;
-		spin_unlock_irqrestore(hba->host->host_lock, flags);
-		if (ufshcd_is_pwr_mode_restore_needed(hba))
-			needs_restore = true;
-		spin_lock_irqsave(hba->host->host_lock, flags);
-		if (!hba->saved_err && !needs_restore)
-			goto skip_err_handling;
-	}
-
-	hba->silence_err_logs = true;
-	/* release lock as clear command might sleep */
-	spin_unlock_irqrestore(hba->host->host_lock, flags);
-	/* Clear pending transfer requests */
-	for_each_set_bit(tag, &hba->outstanding_reqs, hba->nutrs) {
-		if (ufshcd_try_to_abort_task(hba, tag)) {
-			err_xfer = true;
-			goto lock_skip_pending_xfer_clear;
-		}
-		dev_err(hba->dev, "Aborted tag %d / CDB %#02x\n", tag,
-			hba->lrb[tag].cmd ? hba->lrb[tag].cmd->cmnd[0] : -1);
-	}
-
-	/* Clear pending task management requests */
-	for_each_set_bit(tag, &hba->outstanding_tasks, hba->nutmrs) {
-		if (ufshcd_clear_tm_cmd(hba, tag)) {
-			err_tm = true;
-			goto lock_skip_pending_xfer_clear;
-		}
-	}
-
-lock_skip_pending_xfer_clear:
-	/* Complete the requests that are cleared by s/w */
-	ufshcd_complete_requests(hba);
-
-	spin_lock_irqsave(hba->host->host_lock, flags);
-	hba->silence_err_logs = false;
-	if (err_xfer || err_tm) {
-		needs_reset = true;
-		goto do_reset;
-	}
-
-	/*
-	 * After all reqs and tasks are cleared from doorbell,
-	 * now it is safe to retore power mode.
-	 */
-	if (needs_restore) {
-		spin_unlock_irqrestore(hba->host->host_lock, flags);
-		/*
-		 * Hold the scaling lock just in case dev cmds
-		 * are sent via bsg and/or sysfs.
-		 */
-		down_write(&hba->clk_scaling_lock);
-		hba->force_pmc = true;
-		pmc_err = ufshcd_config_pwr_mode(hba, &(hba->pwr_info));
-		if (pmc_err) {
-			needs_reset = true;
-			dev_err(hba->dev, "%s: Failed to restore power mode, err = %d\n",
-					__func__, pmc_err);
-		}
-		hba->force_pmc = false;
-		ufshcd_print_pwr_info(hba);
-		up_write(&hba->clk_scaling_lock);
-		spin_lock_irqsave(hba->host->host_lock, flags);
-	}
-
-do_reset:
-	/* Fatal errors need reset */
-	if (needs_reset) {
-		int err;
-
-		hba->force_reset = false;
-		spin_unlock_irqrestore(hba->host->host_lock, flags);
-		err = ufshcd_reset_and_restore(hba);
-		if (err)
-			dev_err(hba->dev, "%s: reset and restore failed with err %d\n",
-					__func__, err);
-		else
-			ufshcd_recover_pm_error(hba);
-		spin_lock_irqsave(hba->host->host_lock, flags);
-	}
-
-skip_err_handling:
-	if (!needs_reset) {
-		if (hba->ufshcd_state == UFSHCD_STATE_RESET)
-			hba->ufshcd_state = UFSHCD_STATE_OPERATIONAL;
-		if (hba->saved_err || hba->saved_uic_err)
-			dev_err_ratelimited(hba->dev, "%s: exit: saved_err 0x%x saved_uic_err 0x%x",
-			    __func__, hba->saved_err, hba->saved_uic_err);
-	}
-	/* Exit in an operational state or dead */
-	if (hba->ufshcd_state != UFSHCD_STATE_OPERATIONAL &&
-	    hba->ufshcd_state != UFSHCD_STATE_ERROR) {
-		if (--retries)
-			goto again;
-		hba->ufshcd_state = UFSHCD_STATE_ERROR;
-	}
-	ufshcd_clear_eh_in_progress(hba);
-	spin_unlock_irqrestore(hba->host->host_lock, flags);
-	ufshcd_err_handling_unprepare(hba);
-	up(&hba->host_sem);
-
-	dev_info(hba->dev, "%s finished; HBA state %s\n", __func__,
-		 ufshcd_state_name[hba->ufshcd_state]);
-}
-
-/**
- * ufshcd_update_uic_error - check and set fatal UIC error flags.
- * @hba: per-adapter instance
- *
- * Returns
- *  IRQ_HANDLED - If interrupt is valid
- *  IRQ_NONE    - If invalid interrupt
- */
-static irqreturn_t ufshcd_update_uic_error(struct ufs_hba *hba)
-{
-	u32 reg;
-	irqreturn_t retval = IRQ_NONE;
-
-	/* PHY layer error */
-	reg = ufshcd_readl(hba, REG_UIC_ERROR_CODE_PHY_ADAPTER_LAYER);
-	if ((reg & UIC_PHY_ADAPTER_LAYER_ERROR) &&
-	    (reg & UIC_PHY_ADAPTER_LAYER_ERROR_CODE_MASK)) {
-		ufshcd_update_evt_hist(hba, UFS_EVT_PA_ERR, reg);
-		/*
-		 * To know whether this error is fatal or not, DB timeout
-		 * must be checked but this error is handled separately.
-		 */
-		if (reg & UIC_PHY_ADAPTER_LAYER_LANE_ERR_MASK)
-			dev_dbg(hba->dev, "%s: UIC Lane error reported\n",
-					__func__);
-
-		/* Got a LINERESET indication. */
-		if (reg & UIC_PHY_ADAPTER_LAYER_GENERIC_ERROR) {
-			struct uic_command *cmd = NULL;
-
-			hba->uic_error |= UFSHCD_UIC_PA_GENERIC_ERROR;
-			if (hba->uic_async_done && hba->active_uic_cmd)
-				cmd = hba->active_uic_cmd;
-			/*
-			 * Ignore the LINERESET during power mode change
-			 * operation via DME_SET command.
-			 */
-			if (cmd && (cmd->command == UIC_CMD_DME_SET))
-				hba->uic_error &= ~UFSHCD_UIC_PA_GENERIC_ERROR;
-		}
-		retval |= IRQ_HANDLED;
-	}
-
-	/* PA_INIT_ERROR is fatal and needs UIC reset */
-	reg = ufshcd_readl(hba, REG_UIC_ERROR_CODE_DATA_LINK_LAYER);
-	if ((reg & UIC_DATA_LINK_LAYER_ERROR) &&
-	    (reg & UIC_DATA_LINK_LAYER_ERROR_CODE_MASK)) {
-		ufshcd_update_evt_hist(hba, UFS_EVT_DL_ERR, reg);
-
-		if (reg & UIC_DATA_LINK_LAYER_ERROR_PA_INIT)
-			hba->uic_error |= UFSHCD_UIC_DL_PA_INIT_ERROR;
-		else if (hba->dev_quirks &
-				UFS_DEVICE_QUIRK_RECOVERY_FROM_DL_NAC_ERRORS) {
-			if (reg & UIC_DATA_LINK_LAYER_ERROR_NAC_RECEIVED)
-				hba->uic_error |=
-					UFSHCD_UIC_DL_NAC_RECEIVED_ERROR;
-			else if (reg & UIC_DATA_LINK_LAYER_ERROR_TCx_REPLAY_TIMEOUT)
-				hba->uic_error |= UFSHCD_UIC_DL_TCx_REPLAY_ERROR;
-		}
-		retval |= IRQ_HANDLED;
-	}
-
-	/* UIC NL/TL/DME errors needs software retry */
-	reg = ufshcd_readl(hba, REG_UIC_ERROR_CODE_NETWORK_LAYER);
-	if ((reg & UIC_NETWORK_LAYER_ERROR) &&
-	    (reg & UIC_NETWORK_LAYER_ERROR_CODE_MASK)) {
-		ufshcd_update_evt_hist(hba, UFS_EVT_NL_ERR, reg);
-		hba->uic_error |= UFSHCD_UIC_NL_ERROR;
-		retval |= IRQ_HANDLED;
-	}
-
-	reg = ufshcd_readl(hba, REG_UIC_ERROR_CODE_TRANSPORT_LAYER);
-	if ((reg & UIC_TRANSPORT_LAYER_ERROR) &&
-	    (reg & UIC_TRANSPORT_LAYER_ERROR_CODE_MASK)) {
-		ufshcd_update_evt_hist(hba, UFS_EVT_TL_ERR, reg);
-		hba->uic_error |= UFSHCD_UIC_TL_ERROR;
-		retval |= IRQ_HANDLED;
-	}
-
-	reg = ufshcd_readl(hba, REG_UIC_ERROR_CODE_DME);
-	if ((reg & UIC_DME_ERROR) &&
-	    (reg & UIC_DME_ERROR_CODE_MASK)) {
-		ufshcd_update_evt_hist(hba, UFS_EVT_DME_ERR, reg);
-		hba->uic_error |= UFSHCD_UIC_DME_ERROR;
-		retval |= IRQ_HANDLED;
-	}
-
-	dev_dbg(hba->dev, "%s: UIC error flags = 0x%08x\n",
-			__func__, hba->uic_error);
-	return retval;
-}
-
-/**
- * ufshcd_check_errors - Check for errors that need s/w attention
- * @hba: per-adapter instance
- * @intr_status: interrupt status generated by the controller
- *
- * Returns
- *  IRQ_HANDLED - If interrupt is valid
- *  IRQ_NONE    - If invalid interrupt
- */
-static irqreturn_t ufshcd_check_errors(struct ufs_hba *hba, u32 intr_status)
-{
-	bool queue_eh_work = false;
-	irqreturn_t retval = IRQ_NONE;
-
-	spin_lock(hba->host->host_lock);
-	hba->errors |= UFSHCD_ERROR_MASK & intr_status;
-
-	if (hba->errors & INT_FATAL_ERRORS) {
-		ufshcd_update_evt_hist(hba, UFS_EVT_FATAL_ERR,
-				       hba->errors);
-		queue_eh_work = true;
-	}
-
-	if (hba->errors & UIC_ERROR) {
-		hba->uic_error = 0;
-		retval = ufshcd_update_uic_error(hba);
-		if (hba->uic_error)
-			queue_eh_work = true;
-	}
-
-	if (hba->errors & UFSHCD_UIC_HIBERN8_MASK) {
-		dev_err(hba->dev,
-			"%s: Auto Hibern8 %s failed - status: 0x%08x, upmcrs: 0x%08x\n",
-			__func__, (hba->errors & UIC_HIBERNATE_ENTER) ?
-			"Enter" : "Exit",
-			hba->errors, ufshcd_get_upmcrs(hba));
-		ufshcd_update_evt_hist(hba, UFS_EVT_AUTO_HIBERN8_ERR,
-				       hba->errors);
-		ufshcd_set_link_broken(hba);
-		queue_eh_work = true;
-	}
-
-	if (queue_eh_work) {
-		/*
-		 * update the transfer error masks to sticky bits, let's do this
-		 * irrespective of current ufshcd_state.
-		 */
-		hba->saved_err |= hba->errors;
-		hba->saved_uic_err |= hba->uic_error;
-
-		/* dump controller state before resetting */
-		if ((hba->saved_err &
-		     (INT_FATAL_ERRORS | UFSHCD_UIC_HIBERN8_MASK)) ||
-		    (hba->saved_uic_err &&
-		     (hba->saved_uic_err != UFSHCD_UIC_PA_GENERIC_ERROR))) {
-			dev_err(hba->dev, "%s: saved_err 0x%x saved_uic_err 0x%x\n",
-					__func__, hba->saved_err,
-					hba->saved_uic_err);
-			ufshcd_dump_regs(hba, 0, UFSHCI_REG_SPACE_SIZE,
-					 "host_regs: ");
-			ufshcd_print_pwr_info(hba);
-		}
-		ufshcd_schedule_eh_work(hba);
-		retval |= IRQ_HANDLED;
-	}
-	/*
-	 * if (!queue_eh_work) -
-	 * Other errors are either non-fatal where host recovers
-	 * itself without s/w intervention or errors that will be
-	 * handled by the SCSI core layer.
-	 */
-	hba->errors = 0;
-	hba->uic_error = 0;
-	spin_unlock(hba->host->host_lock);
-	return retval;
-}
-
-/**
- * ufshcd_tmc_handler - handle task management function completion
- * @hba: per adapter instance
- *
- * Returns
- *  IRQ_HANDLED - If interrupt is valid
- *  IRQ_NONE    - If invalid interrupt
- */
-static irqreturn_t ufshcd_tmc_handler(struct ufs_hba *hba)
-{
-	unsigned long flags, pending, issued;
-	irqreturn_t ret = IRQ_NONE;
-	int tag;
-
-	spin_lock_irqsave(hba->host->host_lock, flags);
-	pending = ufshcd_readl(hba, REG_UTP_TASK_REQ_DOOR_BELL);
-	issued = hba->outstanding_tasks & ~pending;
-	for_each_set_bit(tag, &issued, hba->nutmrs) {
-		struct request *req = hba->tmf_rqs[tag];
-		struct completion *c = req->end_io_data;
-
-		complete(c);
-		ret = IRQ_HANDLED;
-	}
-	spin_unlock_irqrestore(hba->host->host_lock, flags);
-
-	return ret;
-}
-
-/**
- * ufshcd_sl_intr - Interrupt service routine
- * @hba: per adapter instance
- * @intr_status: contains interrupts generated by the controller
- *
- * Returns
- *  IRQ_HANDLED - If interrupt is valid
- *  IRQ_NONE    - If invalid interrupt
- */
-static irqreturn_t ufshcd_sl_intr(struct ufs_hba *hba, u32 intr_status)
-{
-	irqreturn_t retval = IRQ_NONE;
-
-	if (intr_status & UFSHCD_UIC_MASK)
-		retval |= ufshcd_uic_cmd_compl(hba, intr_status);
-
-	if (intr_status & UFSHCD_ERROR_MASK || hba->errors)
-		retval |= ufshcd_check_errors(hba, intr_status);
-
-	if (intr_status & UTP_TASK_REQ_COMPL)
-		retval |= ufshcd_tmc_handler(hba);
-
-	if (intr_status & UTP_TRANSFER_REQ_COMPL)
-		retval |= ufshcd_transfer_req_compl(hba);
-
-	return retval;
-}
-
-/**
- * ufshcd_intr - Main interrupt service routine
- * @irq: irq number
- * @__hba: pointer to adapter instance
- *
- * Returns
- *  IRQ_HANDLED - If interrupt is valid
- *  IRQ_NONE    - If invalid interrupt
- */
-static irqreturn_t ufshcd_intr(int irq, void *__hba)
-{
-	u32 intr_status, enabled_intr_status = 0;
-	irqreturn_t retval = IRQ_NONE;
-	struct ufs_hba *hba = __hba;
-	int retries = hba->nutrs;
-
-	intr_status = ufshcd_readl(hba, REG_INTERRUPT_STATUS);
-	hba->ufs_stats.last_intr_status = intr_status;
-	hba->ufs_stats.last_intr_ts = ktime_get();
-
-	/*
-	 * There could be max of hba->nutrs reqs in flight and in worst case
-	 * if the reqs get finished 1 by 1 after the interrupt status is
-	 * read, make sure we handle them by checking the interrupt status
-	 * again in a loop until we process all of the reqs before returning.
-	 */
-	while (intr_status && retries--) {
-		enabled_intr_status =
-			intr_status & ufshcd_readl(hba, REG_INTERRUPT_ENABLE);
-		ufshcd_writel(hba, intr_status, REG_INTERRUPT_STATUS);
-		if (enabled_intr_status)
-			retval |= ufshcd_sl_intr(hba, enabled_intr_status);
-
-		intr_status = ufshcd_readl(hba, REG_INTERRUPT_STATUS);
-	}
-
-	if (enabled_intr_status && retval == IRQ_NONE &&
-	    (!(enabled_intr_status & UTP_TRANSFER_REQ_COMPL) ||
-	     hba->outstanding_reqs) && !ufshcd_eh_in_progress(hba)) {
-		dev_err(hba->dev, "%s: Unhandled interrupt 0x%08x (0x%08x, 0x%08x)\n",
-					__func__,
-					intr_status,
-					hba->ufs_stats.last_intr_status,
-					enabled_intr_status);
-		ufshcd_dump_regs(hba, 0, UFSHCI_REG_SPACE_SIZE, "host_regs: ");
-	}
-
-	return retval;
-}
-
-static int ufshcd_clear_tm_cmd(struct ufs_hba *hba, int tag)
-{
-	int err = 0;
-	u32 mask = 1 << tag;
-	unsigned long flags;
-
-	if (!test_bit(tag, &hba->outstanding_tasks))
-		goto out;
-
-	spin_lock_irqsave(hba->host->host_lock, flags);
-	ufshcd_utmrl_clear(hba, tag);
-	spin_unlock_irqrestore(hba->host->host_lock, flags);
-
-	/* poll for max. 1 sec to clear door bell register by h/w */
-	err = ufshcd_wait_for_register(hba,
-			REG_UTP_TASK_REQ_DOOR_BELL,
-			mask, 0, 1000, 1000);
-
-	dev_err(hba->dev, "Clearing task management function with tag %d %s\n",
-		tag, err ? "succeeded" : "failed");
-
-out:
-	return err;
-}
-
-static int __ufshcd_issue_tm_cmd(struct ufs_hba *hba,
-		struct utp_task_req_desc *treq, u8 tm_function)
-{
-	struct request_queue *q = hba->tmf_queue;
-	struct Scsi_Host *host = hba->host;
-	DECLARE_COMPLETION_ONSTACK(wait);
-	struct request *req;
-	unsigned long flags;
-	int task_tag, err;
-
-	/*
-	 * blk_mq_alloc_request() is used here only to get a free tag.
-	 */
-	req = blk_mq_alloc_request(q, REQ_OP_DRV_OUT, 0);
-	if (IS_ERR(req))
-		return PTR_ERR(req);
-
-	req->end_io_data = &wait;
-	ufshcd_hold(hba, false);
-
-	spin_lock_irqsave(host->host_lock, flags);
-
-	task_tag = req->tag;
-	WARN_ONCE(task_tag < 0 || task_tag >= hba->nutmrs, "Invalid tag %d\n",
-		  task_tag);
-	hba->tmf_rqs[req->tag] = req;
-	treq->upiu_req.req_header.dword_0 |= cpu_to_be32(task_tag);
-
-	memcpy(hba->utmrdl_base_addr + task_tag, treq, sizeof(*treq));
-	ufshcd_vops_setup_task_mgmt(hba, task_tag, tm_function);
-
-	/* send command to the controller */
-	__set_bit(task_tag, &hba->outstanding_tasks);
-
-	ufshcd_writel(hba, 1 << task_tag, REG_UTP_TASK_REQ_DOOR_BELL);
-	/* Make sure that doorbell is committed immediately */
-	wmb();
-
-	spin_unlock_irqrestore(host->host_lock, flags);
-
-	ufshcd_add_tm_upiu_trace(hba, task_tag, UFS_TM_SEND);
-
-	/* wait until the task management command is completed */
-	err = wait_for_completion_io_timeout(&wait,
-			msecs_to_jiffies(TM_CMD_TIMEOUT));
-	if (!err) {
-		ufshcd_add_tm_upiu_trace(hba, task_tag, UFS_TM_ERR);
-		dev_err(hba->dev, "%s: task management cmd 0x%.2x timed-out\n",
-				__func__, tm_function);
-		if (ufshcd_clear_tm_cmd(hba, task_tag))
-			dev_WARN(hba->dev, "%s: unable to clear tm cmd (slot %d) after timeout\n",
-					__func__, task_tag);
-		err = -ETIMEDOUT;
-	} else {
-		err = 0;
-		memcpy(treq, hba->utmrdl_base_addr + task_tag, sizeof(*treq));
-
-		ufshcd_add_tm_upiu_trace(hba, task_tag, UFS_TM_COMP);
-	}
-
-	spin_lock_irqsave(hba->host->host_lock, flags);
-	hba->tmf_rqs[req->tag] = NULL;
-	__clear_bit(task_tag, &hba->outstanding_tasks);
-	spin_unlock_irqrestore(hba->host->host_lock, flags);
-
-	ufshcd_release(hba);
-	blk_mq_free_request(req);
-
-	return err;
-}
-
-/**
- * ufshcd_issue_tm_cmd - issues task management commands to controller
- * @hba: per adapter instance
- * @lun_id: LUN ID to which TM command is sent
- * @task_id: task ID to which the TM command is applicable
- * @tm_function: task management function opcode
- * @tm_response: task management service response return value
- *
- * Returns non-zero value on error, zero on success.
- */
-static int ufshcd_issue_tm_cmd(struct ufs_hba *hba, int lun_id, int task_id,
-		u8 tm_function, u8 *tm_response)
-{
-	struct utp_task_req_desc treq = { { 0 }, };
-	enum utp_ocs ocs_value;
-	int err;
-
-	/* Configure task request descriptor */
-	treq.header.dword_0 = cpu_to_le32(UTP_REQ_DESC_INT_CMD);
-	treq.header.dword_2 = cpu_to_le32(OCS_INVALID_COMMAND_STATUS);
-
-	/* Configure task request UPIU */
-	treq.upiu_req.req_header.dword_0 = cpu_to_be32(lun_id << 8) |
-				  cpu_to_be32(UPIU_TRANSACTION_TASK_REQ << 24);
-	treq.upiu_req.req_header.dword_1 = cpu_to_be32(tm_function << 16);
-
-	/*
-	 * The host shall provide the same value for LUN field in the basic
-	 * header and for Input Parameter.
-	 */
-	treq.upiu_req.input_param1 = cpu_to_be32(lun_id);
-	treq.upiu_req.input_param2 = cpu_to_be32(task_id);
-
-	err = __ufshcd_issue_tm_cmd(hba, &treq, tm_function);
-	if (err == -ETIMEDOUT)
-		return err;
-
-	ocs_value = le32_to_cpu(treq.header.dword_2) & MASK_OCS;
-	if (ocs_value != OCS_SUCCESS)
-		dev_err(hba->dev, "%s: failed, ocs = 0x%x\n",
-				__func__, ocs_value);
-	else if (tm_response)
-		*tm_response = be32_to_cpu(treq.upiu_rsp.output_param1) &
-				MASK_TM_SERVICE_RESP;
-	return err;
-}
-
-/**
- * ufshcd_issue_devman_upiu_cmd - API for sending "utrd" type requests
- * @hba:	per-adapter instance
- * @req_upiu:	upiu request
- * @rsp_upiu:	upiu reply
- * @desc_buff:	pointer to descriptor buffer, NULL if NA
- * @buff_len:	descriptor size, 0 if NA
- * @cmd_type:	specifies the type (NOP, Query...)
- * @desc_op:	descriptor operation
- *
- * Those type of requests uses UTP Transfer Request Descriptor - utrd.
- * Therefore, it "rides" the device management infrastructure: uses its tag and
- * tasks work queues.
- *
- * Since there is only one available tag for device management commands,
- * the caller is expected to hold the hba->dev_cmd.lock mutex.
- */
-static int ufshcd_issue_devman_upiu_cmd(struct ufs_hba *hba,
-					struct utp_upiu_req *req_upiu,
-					struct utp_upiu_req *rsp_upiu,
-					u8 *desc_buff, int *buff_len,
-					enum dev_cmd_type cmd_type,
-					enum query_opcode desc_op)
-{
-	DECLARE_COMPLETION_ONSTACK(wait);
-	const u32 tag = hba->reserved_slot;
-	struct ufshcd_lrb *lrbp;
-	int err = 0;
-	u8 upiu_flags;
-
-	/* Protects use of hba->reserved_slot. */
-	lockdep_assert_held(&hba->dev_cmd.lock);
-
-	down_read(&hba->clk_scaling_lock);
-
-	lrbp = &hba->lrb[tag];
-	WARN_ON(lrbp->cmd);
-	lrbp->cmd = NULL;
-	lrbp->task_tag = tag;
-	lrbp->lun = 0;
-	lrbp->intr_cmd = true;
-	ufshcd_prepare_lrbp_crypto(NULL, lrbp);
-	hba->dev_cmd.type = cmd_type;
-
-	if (hba->ufs_version <= ufshci_version(1, 1))
-		lrbp->command_type = UTP_CMD_TYPE_DEV_MANAGE;
-	else
-		lrbp->command_type = UTP_CMD_TYPE_UFS_STORAGE;
-
-	/* update the task tag in the request upiu */
-	req_upiu->header.dword_0 |= cpu_to_be32(tag);
-
-	ufshcd_prepare_req_desc_hdr(lrbp, &upiu_flags, DMA_NONE);
-
-	/* just copy the upiu request as it is */
-	memcpy(lrbp->ucd_req_ptr, req_upiu, sizeof(*lrbp->ucd_req_ptr));
-	if (desc_buff && desc_op == UPIU_QUERY_OPCODE_WRITE_DESC) {
-		/* The Data Segment Area is optional depending upon the query
-		 * function value. for WRITE DESCRIPTOR, the data segment
-		 * follows right after the tsf.
-		 */
-		memcpy(lrbp->ucd_req_ptr + 1, desc_buff, *buff_len);
-		*buff_len = 0;
-	}
-
-	memset(lrbp->ucd_rsp_ptr, 0, sizeof(struct utp_upiu_rsp));
-
-	hba->dev_cmd.complete = &wait;
-
-	ufshcd_add_query_upiu_trace(hba, UFS_QUERY_SEND, lrbp->ucd_req_ptr);
-
-	ufshcd_send_command(hba, tag);
-	/*
-	 * ignore the returning value here - ufshcd_check_query_response is
-	 * bound to fail since dev_cmd.query and dev_cmd.type were left empty.
-	 * read the response directly ignoring all errors.
-	 */
-	ufshcd_wait_for_dev_cmd(hba, lrbp, QUERY_REQ_TIMEOUT);
-
-	/* just copy the upiu response as it is */
-	memcpy(rsp_upiu, lrbp->ucd_rsp_ptr, sizeof(*rsp_upiu));
-	if (desc_buff && desc_op == UPIU_QUERY_OPCODE_READ_DESC) {
-		u8 *descp = (u8 *)lrbp->ucd_rsp_ptr + sizeof(*rsp_upiu);
-		u16 resp_len = be32_to_cpu(lrbp->ucd_rsp_ptr->header.dword_2) &
-			       MASK_QUERY_DATA_SEG_LEN;
-
-		if (*buff_len >= resp_len) {
-			memcpy(desc_buff, descp, resp_len);
-			*buff_len = resp_len;
-		} else {
-			dev_warn(hba->dev,
-				 "%s: rsp size %d is bigger than buffer size %d",
-				 __func__, resp_len, *buff_len);
-			*buff_len = 0;
-			err = -EINVAL;
-		}
-	}
-	ufshcd_add_query_upiu_trace(hba, err ? UFS_QUERY_ERR : UFS_QUERY_COMP,
-				    (struct utp_upiu_req *)lrbp->ucd_rsp_ptr);
-
-	up_read(&hba->clk_scaling_lock);
-	return err;
-}
-
-/**
- * ufshcd_exec_raw_upiu_cmd - API function for sending raw upiu commands
- * @hba:	per-adapter instance
- * @req_upiu:	upiu request
- * @rsp_upiu:	upiu reply - only 8 DW as we do not support scsi commands
- * @msgcode:	message code, one of UPIU Transaction Codes Initiator to Target
- * @desc_buff:	pointer to descriptor buffer, NULL if NA
- * @buff_len:	descriptor size, 0 if NA
- * @desc_op:	descriptor operation
- *
- * Supports UTP Transfer requests (nop and query), and UTP Task
- * Management requests.
- * It is up to the caller to fill the upiu conent properly, as it will
- * be copied without any further input validations.
- */
-int ufshcd_exec_raw_upiu_cmd(struct ufs_hba *hba,
-			     struct utp_upiu_req *req_upiu,
-			     struct utp_upiu_req *rsp_upiu,
-			     int msgcode,
-			     u8 *desc_buff, int *buff_len,
-			     enum query_opcode desc_op)
-{
-	int err;
-	enum dev_cmd_type cmd_type = DEV_CMD_TYPE_QUERY;
-	struct utp_task_req_desc treq = { { 0 }, };
-	enum utp_ocs ocs_value;
-	u8 tm_f = be32_to_cpu(req_upiu->header.dword_1) >> 16 & MASK_TM_FUNC;
-
-	switch (msgcode) {
-	case UPIU_TRANSACTION_NOP_OUT:
-		cmd_type = DEV_CMD_TYPE_NOP;
-		fallthrough;
-	case UPIU_TRANSACTION_QUERY_REQ:
-		ufshcd_hold(hba, false);
-		mutex_lock(&hba->dev_cmd.lock);
-		err = ufshcd_issue_devman_upiu_cmd(hba, req_upiu, rsp_upiu,
-						   desc_buff, buff_len,
-						   cmd_type, desc_op);
-		mutex_unlock(&hba->dev_cmd.lock);
-		ufshcd_release(hba);
-
-		break;
-	case UPIU_TRANSACTION_TASK_REQ:
-		treq.header.dword_0 = cpu_to_le32(UTP_REQ_DESC_INT_CMD);
-		treq.header.dword_2 = cpu_to_le32(OCS_INVALID_COMMAND_STATUS);
-
-		memcpy(&treq.upiu_req, req_upiu, sizeof(*req_upiu));
-
-		err = __ufshcd_issue_tm_cmd(hba, &treq, tm_f);
-		if (err == -ETIMEDOUT)
-			break;
-
-		ocs_value = le32_to_cpu(treq.header.dword_2) & MASK_OCS;
-		if (ocs_value != OCS_SUCCESS) {
-			dev_err(hba->dev, "%s: failed, ocs = 0x%x\n", __func__,
-				ocs_value);
-			break;
-		}
-
-		memcpy(rsp_upiu, &treq.upiu_rsp, sizeof(*rsp_upiu));
-
-		break;
-	default:
-		err = -EINVAL;
-
-		break;
-	}
-
-	return err;
-}
-
-/**
- * ufshcd_eh_device_reset_handler - device reset handler registered to
- *                                    scsi layer.
- * @cmd: SCSI command pointer
- *
- * Returns SUCCESS/FAILED
- */
-static int ufshcd_eh_device_reset_handler(struct scsi_cmnd *cmd)
-{
-	struct Scsi_Host *host;
-	struct ufs_hba *hba;
-	u32 pos;
-	int err;
-	u8 resp = 0xF, lun;
-
-	host = cmd->device->host;
-	hba = shost_priv(host);
-
-	lun = ufshcd_scsi_to_upiu_lun(cmd->device->lun);
-	err = ufshcd_issue_tm_cmd(hba, lun, 0, UFS_LOGICAL_RESET, &resp);
-	if (err || resp != UPIU_TASK_MANAGEMENT_FUNC_COMPL) {
-		if (!err)
-			err = resp;
-		goto out;
-	}
-
-	/* clear the commands that were pending for corresponding LUN */
-	for_each_set_bit(pos, &hba->outstanding_reqs, hba->nutrs) {
-		if (hba->lrb[pos].lun == lun) {
-			err = ufshcd_clear_cmd(hba, pos);
-			if (err)
-				break;
-			__ufshcd_transfer_req_compl(hba, 1U << pos);
-		}
-	}
-
-out:
-	hba->req_abort_count = 0;
-	ufshcd_update_evt_hist(hba, UFS_EVT_DEV_RESET, (u32)err);
-	if (!err) {
-		err = SUCCESS;
-	} else {
-		dev_err(hba->dev, "%s: failed with err %d\n", __func__, err);
-		err = FAILED;
-	}
-	return err;
-}
-
-static void ufshcd_set_req_abort_skip(struct ufs_hba *hba, unsigned long bitmap)
-{
-	struct ufshcd_lrb *lrbp;
-	int tag;
-
-	for_each_set_bit(tag, &bitmap, hba->nutrs) {
-		lrbp = &hba->lrb[tag];
-		lrbp->req_abort_skip = true;
-	}
-}
-
-/**
- * ufshcd_try_to_abort_task - abort a specific task
- * @hba: Pointer to adapter instance
- * @tag: Task tag/index to be aborted
- *
- * Abort the pending command in device by sending UFS_ABORT_TASK task management
- * command, and in host controller by clearing the door-bell register. There can
- * be race between controller sending the command to the device while abort is
- * issued. To avoid that, first issue UFS_QUERY_TASK to check if the command is
- * really issued and then try to abort it.
- *
- * Returns zero on success, non-zero on failure
- */
-static int ufshcd_try_to_abort_task(struct ufs_hba *hba, int tag)
-{
-	struct ufshcd_lrb *lrbp = &hba->lrb[tag];
-	int err = 0;
-	int poll_cnt;
-	u8 resp = 0xF;
-	u32 reg;
-
-	for (poll_cnt = 100; poll_cnt; poll_cnt--) {
-		err = ufshcd_issue_tm_cmd(hba, lrbp->lun, lrbp->task_tag,
-				UFS_QUERY_TASK, &resp);
-		if (!err && resp == UPIU_TASK_MANAGEMENT_FUNC_SUCCEEDED) {
-			/* cmd pending in the device */
-			dev_err(hba->dev, "%s: cmd pending in the device. tag = %d\n",
-				__func__, tag);
-			break;
-		} else if (!err && resp == UPIU_TASK_MANAGEMENT_FUNC_COMPL) {
-			/*
-			 * cmd not pending in the device, check if it is
-			 * in transition.
-			 */
-			dev_err(hba->dev, "%s: cmd at tag %d not pending in the device.\n",
-				__func__, tag);
-			reg = ufshcd_readl(hba, REG_UTP_TRANSFER_REQ_DOOR_BELL);
-			if (reg & (1 << tag)) {
-				/* sleep for max. 200us to stabilize */
-				usleep_range(100, 200);
-				continue;
-			}
-			/* command completed already */
-			dev_err(hba->dev, "%s: cmd at tag %d successfully cleared from DB.\n",
-				__func__, tag);
-			goto out;
-		} else {
-			dev_err(hba->dev,
-				"%s: no response from device. tag = %d, err %d\n",
-				__func__, tag, err);
-			if (!err)
-				err = resp; /* service response error */
-			goto out;
-		}
-	}
-
-	if (!poll_cnt) {
-		err = -EBUSY;
-		goto out;
-	}
-
-	err = ufshcd_issue_tm_cmd(hba, lrbp->lun, lrbp->task_tag,
-			UFS_ABORT_TASK, &resp);
-	if (err || resp != UPIU_TASK_MANAGEMENT_FUNC_COMPL) {
-		if (!err) {
-			err = resp; /* service response error */
-			dev_err(hba->dev, "%s: issued. tag = %d, err %d\n",
-				__func__, tag, err);
-		}
-		goto out;
-	}
-
-	err = ufshcd_clear_cmd(hba, tag);
-	if (err)
-		dev_err(hba->dev, "%s: Failed clearing cmd at tag %d, err %d\n",
-			__func__, tag, err);
-
-out:
-	return err;
-}
-
-/**
- * ufshcd_abort - scsi host template eh_abort_handler callback
- * @cmd: SCSI command pointer
- *
- * Returns SUCCESS/FAILED
- */
-static int ufshcd_abort(struct scsi_cmnd *cmd)
-{
-	struct Scsi_Host *host = cmd->device->host;
-	struct ufs_hba *hba = shost_priv(host);
-	int tag = scsi_cmd_to_rq(cmd)->tag;
-	struct ufshcd_lrb *lrbp = &hba->lrb[tag];
-	unsigned long flags;
-	int err = FAILED;
-	bool outstanding;
-	u32 reg;
-
-	WARN_ONCE(tag < 0, "Invalid tag %d\n", tag);
-
-	ufshcd_hold(hba, false);
-	reg = ufshcd_readl(hba, REG_UTP_TRANSFER_REQ_DOOR_BELL);
-	/* If command is already aborted/completed, return FAILED. */
-	if (!(test_bit(tag, &hba->outstanding_reqs))) {
-		dev_err(hba->dev,
-			"%s: cmd at tag %d already completed, outstanding=0x%lx, doorbell=0x%x\n",
-			__func__, tag, hba->outstanding_reqs, reg);
-		goto release;
-	}
-
-	/* Print Transfer Request of aborted task */
-	dev_info(hba->dev, "%s: Device abort task at tag %d\n", __func__, tag);
-
-	/*
-	 * Print detailed info about aborted request.
-	 * As more than one request might get aborted at the same time,
-	 * print full information only for the first aborted request in order
-	 * to reduce repeated printouts. For other aborted requests only print
-	 * basic details.
-	 */
-	scsi_print_command(cmd);
-	if (!hba->req_abort_count) {
-		ufshcd_update_evt_hist(hba, UFS_EVT_ABORT, tag);
-		ufshcd_print_evt_hist(hba);
-		ufshcd_print_host_state(hba);
-		ufshcd_print_pwr_info(hba);
-		ufshcd_print_trs(hba, 1 << tag, true);
-	} else {
-		ufshcd_print_trs(hba, 1 << tag, false);
-	}
-	hba->req_abort_count++;
-
-	if (!(reg & (1 << tag))) {
-		dev_err(hba->dev,
-		"%s: cmd was completed, but without a notifying intr, tag = %d",
-		__func__, tag);
-		__ufshcd_transfer_req_compl(hba, 1UL << tag);
-		goto release;
-	}
-
-	/*
-	 * Task abort to the device W-LUN is illegal. When this command
-	 * will fail, due to spec violation, scsi err handling next step
-	 * will be to send LU reset which, again, is a spec violation.
-	 * To avoid these unnecessary/illegal steps, first we clean up
-	 * the lrb taken by this cmd and re-set it in outstanding_reqs,
-	 * then queue the eh_work and bail.
-	 */
-	if (lrbp->lun == UFS_UPIU_UFS_DEVICE_WLUN) {
-		ufshcd_update_evt_hist(hba, UFS_EVT_ABORT, lrbp->lun);
-
-		spin_lock_irqsave(host->host_lock, flags);
-		hba->force_reset = true;
-		ufshcd_schedule_eh_work(hba);
-		spin_unlock_irqrestore(host->host_lock, flags);
-		goto release;
-	}
-
-	/* Skip task abort in case previous aborts failed and report failure */
-	if (lrbp->req_abort_skip) {
-		dev_err(hba->dev, "%s: skipping abort\n", __func__);
-		ufshcd_set_req_abort_skip(hba, hba->outstanding_reqs);
-		goto release;
-	}
-
-	err = ufshcd_try_to_abort_task(hba, tag);
-	if (err) {
-		dev_err(hba->dev, "%s: failed with err %d\n", __func__, err);
-		ufshcd_set_req_abort_skip(hba, hba->outstanding_reqs);
-		err = FAILED;
-		goto release;
-	}
-
-	/*
-	 * Clear the corresponding bit from outstanding_reqs since the command
-	 * has been aborted successfully.
-	 */
-	spin_lock_irqsave(&hba->outstanding_lock, flags);
-	outstanding = __test_and_clear_bit(tag, &hba->outstanding_reqs);
-	spin_unlock_irqrestore(&hba->outstanding_lock, flags);
-
-	if (outstanding)
-		ufshcd_release_scsi_cmd(hba, lrbp);
-
-	err = SUCCESS;
-
-release:
-	/* Matches the ufshcd_hold() call at the start of this function. */
-	ufshcd_release(hba);
-	return err;
-}
-
-/**
- * ufshcd_host_reset_and_restore - reset and restore host controller
- * @hba: per-adapter instance
- *
- * Note that host controller reset may issue DME_RESET to
- * local and remote (device) Uni-Pro stack and the attributes
- * are reset to default state.
- *
- * Returns zero on success, non-zero on failure
- */
-static int ufshcd_host_reset_and_restore(struct ufs_hba *hba)
-{
-	int err;
-
-	/*
-	 * Stop the host controller and complete the requests
-	 * cleared by h/w
-	 */
-	ufshpb_toggle_state(hba, HPB_PRESENT, HPB_RESET);
-	ufshcd_hba_stop(hba);
-	hba->silence_err_logs = true;
-	ufshcd_complete_requests(hba);
-	hba->silence_err_logs = false;
-
-	/* scale up clocks to max frequency before full reinitialization */
-	ufshcd_set_clk_freq(hba, true);
-
-	err = ufshcd_hba_enable(hba);
-
-	/* Establish the link again and restore the device */
-	if (!err)
-		err = ufshcd_probe_hba(hba, false);
-
-	if (err)
-		dev_err(hba->dev, "%s: Host init failed %d\n", __func__, err);
-	ufshcd_update_evt_hist(hba, UFS_EVT_HOST_RESET, (u32)err);
-	return err;
-}
-
-/**
- * ufshcd_reset_and_restore - reset and re-initialize host/device
- * @hba: per-adapter instance
- *
- * Reset and recover device, host and re-establish link. This
- * is helpful to recover the communication in fatal error conditions.
- *
- * Returns zero on success, non-zero on failure
- */
-static int ufshcd_reset_and_restore(struct ufs_hba *hba)
-{
-	u32 saved_err = 0;
-	u32 saved_uic_err = 0;
-	int err = 0;
-	unsigned long flags;
-	int retries = MAX_HOST_RESET_RETRIES;
-
-	spin_lock_irqsave(hba->host->host_lock, flags);
-	do {
-		/*
-		 * This is a fresh start, cache and clear saved error first,
-		 * in case new error generated during reset and restore.
-		 */
-		saved_err |= hba->saved_err;
-		saved_uic_err |= hba->saved_uic_err;
-		hba->saved_err = 0;
-		hba->saved_uic_err = 0;
-		hba->force_reset = false;
-		hba->ufshcd_state = UFSHCD_STATE_RESET;
-		spin_unlock_irqrestore(hba->host->host_lock, flags);
-
-		/* Reset the attached device */
-		ufshcd_device_reset(hba);
-
-		err = ufshcd_host_reset_and_restore(hba);
-
-		spin_lock_irqsave(hba->host->host_lock, flags);
-		if (err)
-			continue;
-		/* Do not exit unless operational or dead */
-		if (hba->ufshcd_state != UFSHCD_STATE_OPERATIONAL &&
-		    hba->ufshcd_state != UFSHCD_STATE_ERROR &&
-		    hba->ufshcd_state != UFSHCD_STATE_EH_SCHEDULED_NON_FATAL)
-			err = -EAGAIN;
-	} while (err && --retries);
-
-	/*
-	 * Inform scsi mid-layer that we did reset and allow to handle
-	 * Unit Attention properly.
-	 */
-	scsi_report_bus_reset(hba->host, 0);
-	if (err) {
-		hba->ufshcd_state = UFSHCD_STATE_ERROR;
-		hba->saved_err |= saved_err;
-		hba->saved_uic_err |= saved_uic_err;
-	}
-	spin_unlock_irqrestore(hba->host->host_lock, flags);
-
-	return err;
-}
-
-/**
- * ufshcd_eh_host_reset_handler - host reset handler registered to scsi layer
- * @cmd: SCSI command pointer
- *
- * Returns SUCCESS/FAILED
- */
-static int ufshcd_eh_host_reset_handler(struct scsi_cmnd *cmd)
-{
-	int err = SUCCESS;
-	unsigned long flags;
-	struct ufs_hba *hba;
-
-	hba = shost_priv(cmd->device->host);
-
-	spin_lock_irqsave(hba->host->host_lock, flags);
-	hba->force_reset = true;
-	ufshcd_schedule_eh_work(hba);
-	dev_err(hba->dev, "%s: reset in progress - 1\n", __func__);
-	spin_unlock_irqrestore(hba->host->host_lock, flags);
-
-	flush_work(&hba->eh_work);
-
-	spin_lock_irqsave(hba->host->host_lock, flags);
-	if (hba->ufshcd_state == UFSHCD_STATE_ERROR)
-		err = FAILED;
-	spin_unlock_irqrestore(hba->host->host_lock, flags);
-
-	return err;
-}
-
-/**
- * ufshcd_get_max_icc_level - calculate the ICC level
- * @sup_curr_uA: max. current supported by the regulator
- * @start_scan: row at the desc table to start scan from
- * @buff: power descriptor buffer
- *
- * Returns calculated max ICC level for specific regulator
- */
-static u32 ufshcd_get_max_icc_level(int sup_curr_uA, u32 start_scan, char *buff)
-{
-	int i;
-	int curr_uA;
-	u16 data;
-	u16 unit;
-
-	for (i = start_scan; i >= 0; i--) {
-		data = get_unaligned_be16(&buff[2 * i]);
-		unit = (data & ATTR_ICC_LVL_UNIT_MASK) >>
-						ATTR_ICC_LVL_UNIT_OFFSET;
-		curr_uA = data & ATTR_ICC_LVL_VALUE_MASK;
-		switch (unit) {
-		case UFSHCD_NANO_AMP:
-			curr_uA = curr_uA / 1000;
-			break;
-		case UFSHCD_MILI_AMP:
-			curr_uA = curr_uA * 1000;
-			break;
-		case UFSHCD_AMP:
-			curr_uA = curr_uA * 1000 * 1000;
-			break;
-		case UFSHCD_MICRO_AMP:
-		default:
-			break;
-		}
-		if (sup_curr_uA >= curr_uA)
-			break;
-	}
-	if (i < 0) {
-		i = 0;
-		pr_err("%s: Couldn't find valid icc_level = %d", __func__, i);
-	}
-
-	return (u32)i;
-}
-
-/**
- * ufshcd_find_max_sup_active_icc_level - calculate the max ICC level
- * In case regulators are not initialized we'll return 0
- * @hba: per-adapter instance
- * @desc_buf: power descriptor buffer to extract ICC levels from.
- * @len: length of desc_buff
- *
- * Returns calculated ICC level
- */
-static u32 ufshcd_find_max_sup_active_icc_level(struct ufs_hba *hba,
-							u8 *desc_buf, int len)
-{
-	u32 icc_level = 0;
-
-	if (!hba->vreg_info.vcc || !hba->vreg_info.vccq ||
-						!hba->vreg_info.vccq2) {
-		/*
-		 * Using dev_dbg to avoid messages during runtime PM to avoid
-		 * never-ending cycles of messages written back to storage by
-		 * user space causing runtime resume, causing more messages and
-		 * so on.
-		 */
-		dev_dbg(hba->dev,
-			"%s: Regulator capability was not set, actvIccLevel=%d",
-							__func__, icc_level);
-		goto out;
-	}
-
-	if (hba->vreg_info.vcc->max_uA)
-		icc_level = ufshcd_get_max_icc_level(
-				hba->vreg_info.vcc->max_uA,
-				POWER_DESC_MAX_ACTV_ICC_LVLS - 1,
-				&desc_buf[PWR_DESC_ACTIVE_LVLS_VCC_0]);
-
-	if (hba->vreg_info.vccq->max_uA)
-		icc_level = ufshcd_get_max_icc_level(
-				hba->vreg_info.vccq->max_uA,
-				icc_level,
-				&desc_buf[PWR_DESC_ACTIVE_LVLS_VCCQ_0]);
-
-	if (hba->vreg_info.vccq2->max_uA)
-		icc_level = ufshcd_get_max_icc_level(
-				hba->vreg_info.vccq2->max_uA,
-				icc_level,
-				&desc_buf[PWR_DESC_ACTIVE_LVLS_VCCQ2_0]);
-out:
-	return icc_level;
-}
-
-static void ufshcd_set_active_icc_lvl(struct ufs_hba *hba)
-{
-	int ret;
-	int buff_len = hba->desc_size[QUERY_DESC_IDN_POWER];
-	u8 *desc_buf;
-	u32 icc_level;
-
-	desc_buf = kmalloc(buff_len, GFP_KERNEL);
-	if (!desc_buf)
-		return;
-
-	ret = ufshcd_read_desc_param(hba, QUERY_DESC_IDN_POWER, 0, 0,
-				     desc_buf, buff_len);
-	if (ret) {
-		dev_err(hba->dev,
-			"%s: Failed reading power descriptor.len = %d ret = %d",
-			__func__, buff_len, ret);
-		goto out;
-	}
-
-	icc_level = ufshcd_find_max_sup_active_icc_level(hba, desc_buf,
-							 buff_len);
-	dev_dbg(hba->dev, "%s: setting icc_level 0x%x", __func__, icc_level);
-
-	ret = ufshcd_query_attr_retry(hba, UPIU_QUERY_OPCODE_WRITE_ATTR,
-		QUERY_ATTR_IDN_ACTIVE_ICC_LVL, 0, 0, &icc_level);
-
-	if (ret)
-		dev_err(hba->dev,
-			"%s: Failed configuring bActiveICCLevel = %d ret = %d",
-			__func__, icc_level, ret);
-
-out:
-	kfree(desc_buf);
-}
-
-static inline void ufshcd_blk_pm_runtime_init(struct scsi_device *sdev)
-{
-	scsi_autopm_get_device(sdev);
-	blk_pm_runtime_init(sdev->request_queue, &sdev->sdev_gendev);
-	if (sdev->rpm_autosuspend)
-		pm_runtime_set_autosuspend_delay(&sdev->sdev_gendev,
-						 RPM_AUTOSUSPEND_DELAY_MS);
-	scsi_autopm_put_device(sdev);
-}
-
-/**
- * ufshcd_scsi_add_wlus - Adds required W-LUs
- * @hba: per-adapter instance
- *
- * UFS device specification requires the UFS devices to support 4 well known
- * logical units:
- *	"REPORT_LUNS" (address: 01h)
- *	"UFS Device" (address: 50h)
- *	"RPMB" (address: 44h)
- *	"BOOT" (address: 30h)
- * UFS device's power management needs to be controlled by "POWER CONDITION"
- * field of SSU (START STOP UNIT) command. But this "power condition" field
- * will take effect only when its sent to "UFS device" well known logical unit
- * hence we require the scsi_device instance to represent this logical unit in
- * order for the UFS host driver to send the SSU command for power management.
- *
- * We also require the scsi_device instance for "RPMB" (Replay Protected Memory
- * Block) LU so user space process can control this LU. User space may also
- * want to have access to BOOT LU.
- *
- * This function adds scsi device instances for each of all well known LUs
- * (except "REPORT LUNS" LU).
- *
- * Returns zero on success (all required W-LUs are added successfully),
- * non-zero error value on failure (if failed to add any of the required W-LU).
- */
-static int ufshcd_scsi_add_wlus(struct ufs_hba *hba)
-{
-	int ret = 0;
-	struct scsi_device *sdev_boot, *sdev_rpmb;
-
-	hba->ufs_device_wlun = __scsi_add_device(hba->host, 0, 0,
-		ufshcd_upiu_wlun_to_scsi_wlun(UFS_UPIU_UFS_DEVICE_WLUN), NULL);
-	if (IS_ERR(hba->ufs_device_wlun)) {
-		ret = PTR_ERR(hba->ufs_device_wlun);
-		hba->ufs_device_wlun = NULL;
-		goto out;
-	}
-	scsi_device_put(hba->ufs_device_wlun);
-
-	sdev_rpmb = __scsi_add_device(hba->host, 0, 0,
-		ufshcd_upiu_wlun_to_scsi_wlun(UFS_UPIU_RPMB_WLUN), NULL);
-	if (IS_ERR(sdev_rpmb)) {
-		ret = PTR_ERR(sdev_rpmb);
-		goto remove_ufs_device_wlun;
-	}
-	ufshcd_blk_pm_runtime_init(sdev_rpmb);
-	scsi_device_put(sdev_rpmb);
-
-	sdev_boot = __scsi_add_device(hba->host, 0, 0,
-		ufshcd_upiu_wlun_to_scsi_wlun(UFS_UPIU_BOOT_WLUN), NULL);
-	if (IS_ERR(sdev_boot)) {
-		dev_err(hba->dev, "%s: BOOT WLUN not found\n", __func__);
-	} else {
-		ufshcd_blk_pm_runtime_init(sdev_boot);
-		scsi_device_put(sdev_boot);
-	}
-	goto out;
-
-remove_ufs_device_wlun:
-	scsi_remove_device(hba->ufs_device_wlun);
-out:
-	return ret;
-}
-
-static void ufshcd_wb_probe(struct ufs_hba *hba, u8 *desc_buf)
-{
-	struct ufs_dev_info *dev_info = &hba->dev_info;
-	u8 lun;
-	u32 d_lu_wb_buf_alloc;
-	u32 ext_ufs_feature;
-
-	if (!ufshcd_is_wb_allowed(hba))
-		return;
-
-	/*
-	 * Probe WB only for UFS-2.2 and UFS-3.1 (and later) devices or
-	 * UFS devices with quirk UFS_DEVICE_QUIRK_SUPPORT_EXTENDED_FEATURES
-	 * enabled
-	 */
-	if (!(dev_info->wspecversion >= 0x310 ||
-	      dev_info->wspecversion == 0x220 ||
-	     (hba->dev_quirks & UFS_DEVICE_QUIRK_SUPPORT_EXTENDED_FEATURES)))
-		goto wb_disabled;
-
-	if (hba->desc_size[QUERY_DESC_IDN_DEVICE] <
-	    DEVICE_DESC_PARAM_EXT_UFS_FEATURE_SUP + 4)
-		goto wb_disabled;
-
-	ext_ufs_feature = get_unaligned_be32(desc_buf +
-					DEVICE_DESC_PARAM_EXT_UFS_FEATURE_SUP);
-
-	if (!(ext_ufs_feature & UFS_DEV_WRITE_BOOSTER_SUP))
-		goto wb_disabled;
-
-	/*
-	 * WB may be supported but not configured while provisioning. The spec
-	 * says, in dedicated wb buffer mode, a max of 1 lun would have wb
-	 * buffer configured.
-	 */
-	dev_info->wb_buffer_type = desc_buf[DEVICE_DESC_PARAM_WB_TYPE];
-
-	dev_info->b_presrv_uspc_en =
-		desc_buf[DEVICE_DESC_PARAM_WB_PRESRV_USRSPC_EN];
-
-	if (dev_info->wb_buffer_type == WB_BUF_MODE_SHARED) {
-		if (!get_unaligned_be32(desc_buf +
-				   DEVICE_DESC_PARAM_WB_SHARED_ALLOC_UNITS))
-			goto wb_disabled;
-	} else {
-		for (lun = 0; lun < UFS_UPIU_MAX_WB_LUN_ID; lun++) {
-			d_lu_wb_buf_alloc = 0;
-			ufshcd_read_unit_desc_param(hba,
-					lun,
-					UNIT_DESC_PARAM_WB_BUF_ALLOC_UNITS,
-					(u8 *)&d_lu_wb_buf_alloc,
-					sizeof(d_lu_wb_buf_alloc));
-			if (d_lu_wb_buf_alloc) {
-				dev_info->wb_dedicated_lu = lun;
-				break;
-			}
-		}
-
-		if (!d_lu_wb_buf_alloc)
-			goto wb_disabled;
-	}
-
-	if (!ufshcd_is_wb_buf_lifetime_available(hba))
-		goto wb_disabled;
-
-	return;
-
-wb_disabled:
-	hba->caps &= ~UFSHCD_CAP_WB_EN;
-}
-
-static void ufshcd_temp_notif_probe(struct ufs_hba *hba, u8 *desc_buf)
-{
-	struct ufs_dev_info *dev_info = &hba->dev_info;
-	u32 ext_ufs_feature;
-	u8 mask = 0;
-
-	if (!(hba->caps & UFSHCD_CAP_TEMP_NOTIF) || dev_info->wspecversion < 0x300)
-		return;
-
-	ext_ufs_feature = get_unaligned_be32(desc_buf + DEVICE_DESC_PARAM_EXT_UFS_FEATURE_SUP);
-
-	if (ext_ufs_feature & UFS_DEV_LOW_TEMP_NOTIF)
-		mask |= MASK_EE_TOO_LOW_TEMP;
-
-	if (ext_ufs_feature & UFS_DEV_HIGH_TEMP_NOTIF)
-		mask |= MASK_EE_TOO_HIGH_TEMP;
-
-	if (mask) {
-		ufshcd_enable_ee(hba, mask);
-		ufs_hwmon_probe(hba, mask);
-	}
-}
-
-void ufshcd_fixup_dev_quirks(struct ufs_hba *hba,
-			     const struct ufs_dev_quirk *fixups)
-{
-	const struct ufs_dev_quirk *f;
-	struct ufs_dev_info *dev_info = &hba->dev_info;
-
-	if (!fixups)
-		return;
-
-	for (f = fixups; f->quirk; f++) {
-		if ((f->wmanufacturerid == dev_info->wmanufacturerid ||
-		     f->wmanufacturerid == UFS_ANY_VENDOR) &&
-		     ((dev_info->model &&
-		       STR_PRFX_EQUAL(f->model, dev_info->model)) ||
-		      !strcmp(f->model, UFS_ANY_MODEL)))
-			hba->dev_quirks |= f->quirk;
-	}
-}
-EXPORT_SYMBOL_GPL(ufshcd_fixup_dev_quirks);
-
-static void ufs_fixup_device_setup(struct ufs_hba *hba)
-{
-	/* fix by general quirk table */
-	ufshcd_fixup_dev_quirks(hba, ufs_fixups);
-
-	/* allow vendors to fix quirks */
-	ufshcd_vops_fixup_dev_quirks(hba);
-}
-
-static int ufs_get_device_desc(struct ufs_hba *hba)
-{
-	int err;
-	u8 model_index;
-	u8 b_ufs_feature_sup;
-	u8 *desc_buf;
-	struct ufs_dev_info *dev_info = &hba->dev_info;
-
-	desc_buf = kmalloc(QUERY_DESC_MAX_SIZE, GFP_KERNEL);
-	if (!desc_buf) {
-		err = -ENOMEM;
-		goto out;
-	}
-
-	err = ufshcd_read_desc_param(hba, QUERY_DESC_IDN_DEVICE, 0, 0, desc_buf,
-				     hba->desc_size[QUERY_DESC_IDN_DEVICE]);
-	if (err) {
-		dev_err(hba->dev, "%s: Failed reading Device Desc. err = %d\n",
-			__func__, err);
-		goto out;
-	}
-
-	/*
-	 * getting vendor (manufacturerID) and Bank Index in big endian
-	 * format
-	 */
-	dev_info->wmanufacturerid = desc_buf[DEVICE_DESC_PARAM_MANF_ID] << 8 |
-				     desc_buf[DEVICE_DESC_PARAM_MANF_ID + 1];
-
-	/* getting Specification Version in big endian format */
-	dev_info->wspecversion = desc_buf[DEVICE_DESC_PARAM_SPEC_VER] << 8 |
-				      desc_buf[DEVICE_DESC_PARAM_SPEC_VER + 1];
-	b_ufs_feature_sup = desc_buf[DEVICE_DESC_PARAM_UFS_FEAT];
-
-	model_index = desc_buf[DEVICE_DESC_PARAM_PRDCT_NAME];
-
-	if (dev_info->wspecversion >= UFS_DEV_HPB_SUPPORT_VERSION &&
-	    (b_ufs_feature_sup & UFS_DEV_HPB_SUPPORT)) {
-		bool hpb_en = false;
-
-		ufshpb_get_dev_info(hba, desc_buf);
-
-		if (!ufshpb_is_legacy(hba))
-			err = ufshcd_query_flag_retry(hba,
-						      UPIU_QUERY_OPCODE_READ_FLAG,
-						      QUERY_FLAG_IDN_HPB_EN, 0,
-						      &hpb_en);
-
-		if (ufshpb_is_legacy(hba) || (!err && hpb_en))
-			dev_info->hpb_enabled = true;
-	}
-
-	err = ufshcd_read_string_desc(hba, model_index,
-				      &dev_info->model, SD_ASCII_STD);
-	if (err < 0) {
-		dev_err(hba->dev, "%s: Failed reading Product Name. err = %d\n",
-			__func__, err);
-		goto out;
-	}
-
-	hba->luns_avail = desc_buf[DEVICE_DESC_PARAM_NUM_LU] +
-		desc_buf[DEVICE_DESC_PARAM_NUM_WLU];
-
-	ufs_fixup_device_setup(hba);
-
-	ufshcd_wb_probe(hba, desc_buf);
-
-	ufshcd_temp_notif_probe(hba, desc_buf);
-
-	/*
-	 * ufshcd_read_string_desc returns size of the string
-	 * reset the error value
-	 */
-	err = 0;
-
-out:
-	kfree(desc_buf);
-	return err;
-}
-
-static void ufs_put_device_desc(struct ufs_hba *hba)
-{
-	struct ufs_dev_info *dev_info = &hba->dev_info;
-
-	kfree(dev_info->model);
-	dev_info->model = NULL;
-}
-
-/**
- * ufshcd_tune_pa_tactivate - Tunes PA_TActivate of local UniPro
- * @hba: per-adapter instance
- *
- * PA_TActivate parameter can be tuned manually if UniPro version is less than
- * 1.61. PA_TActivate needs to be greater than or equal to peerM-PHY's
- * RX_MIN_ACTIVATETIME_CAPABILITY attribute. This optimal value can help reduce
- * the hibern8 exit latency.
- *
- * Returns zero on success, non-zero error value on failure.
- */
-static int ufshcd_tune_pa_tactivate(struct ufs_hba *hba)
-{
-	int ret = 0;
-	u32 peer_rx_min_activatetime = 0, tuned_pa_tactivate;
-
-	ret = ufshcd_dme_peer_get(hba,
-				  UIC_ARG_MIB_SEL(
-					RX_MIN_ACTIVATETIME_CAPABILITY,
-					UIC_ARG_MPHY_RX_GEN_SEL_INDEX(0)),
-				  &peer_rx_min_activatetime);
-	if (ret)
-		goto out;
-
-	/* make sure proper unit conversion is applied */
-	tuned_pa_tactivate =
-		((peer_rx_min_activatetime * RX_MIN_ACTIVATETIME_UNIT_US)
-		 / PA_TACTIVATE_TIME_UNIT_US);
-	ret = ufshcd_dme_set(hba, UIC_ARG_MIB(PA_TACTIVATE),
-			     tuned_pa_tactivate);
-
-out:
-	return ret;
-}
-
-/**
- * ufshcd_tune_pa_hibern8time - Tunes PA_Hibern8Time of local UniPro
- * @hba: per-adapter instance
- *
- * PA_Hibern8Time parameter can be tuned manually if UniPro version is less than
- * 1.61. PA_Hibern8Time needs to be maximum of local M-PHY's
- * TX_HIBERN8TIME_CAPABILITY & peer M-PHY's RX_HIBERN8TIME_CAPABILITY.
- * This optimal value can help reduce the hibern8 exit latency.
- *
- * Returns zero on success, non-zero error value on failure.
- */
-static int ufshcd_tune_pa_hibern8time(struct ufs_hba *hba)
-{
-	int ret = 0;
-	u32 local_tx_hibern8_time_cap = 0, peer_rx_hibern8_time_cap = 0;
-	u32 max_hibern8_time, tuned_pa_hibern8time;
-
-	ret = ufshcd_dme_get(hba,
-			     UIC_ARG_MIB_SEL(TX_HIBERN8TIME_CAPABILITY,
-					UIC_ARG_MPHY_TX_GEN_SEL_INDEX(0)),
-				  &local_tx_hibern8_time_cap);
-	if (ret)
-		goto out;
-
-	ret = ufshcd_dme_peer_get(hba,
-				  UIC_ARG_MIB_SEL(RX_HIBERN8TIME_CAPABILITY,
-					UIC_ARG_MPHY_RX_GEN_SEL_INDEX(0)),
-				  &peer_rx_hibern8_time_cap);
-	if (ret)
-		goto out;
-
-	max_hibern8_time = max(local_tx_hibern8_time_cap,
-			       peer_rx_hibern8_time_cap);
-	/* make sure proper unit conversion is applied */
-	tuned_pa_hibern8time = ((max_hibern8_time * HIBERN8TIME_UNIT_US)
-				/ PA_HIBERN8_TIME_UNIT_US);
-	ret = ufshcd_dme_set(hba, UIC_ARG_MIB(PA_HIBERN8TIME),
-			     tuned_pa_hibern8time);
-out:
-	return ret;
-}
-
-/**
- * ufshcd_quirk_tune_host_pa_tactivate - Ensures that host PA_TACTIVATE is
- * less than device PA_TACTIVATE time.
- * @hba: per-adapter instance
- *
- * Some UFS devices require host PA_TACTIVATE to be lower than device
- * PA_TACTIVATE, we need to enable UFS_DEVICE_QUIRK_HOST_PA_TACTIVATE quirk
- * for such devices.
- *
- * Returns zero on success, non-zero error value on failure.
- */
-static int ufshcd_quirk_tune_host_pa_tactivate(struct ufs_hba *hba)
-{
-	int ret = 0;
-	u32 granularity, peer_granularity;
-	u32 pa_tactivate, peer_pa_tactivate;
-	u32 pa_tactivate_us, peer_pa_tactivate_us;
-	u8 gran_to_us_table[] = {1, 4, 8, 16, 32, 100};
-
-	ret = ufshcd_dme_get(hba, UIC_ARG_MIB(PA_GRANULARITY),
-				  &granularity);
-	if (ret)
-		goto out;
-
-	ret = ufshcd_dme_peer_get(hba, UIC_ARG_MIB(PA_GRANULARITY),
-				  &peer_granularity);
-	if (ret)
-		goto out;
-
-	if ((granularity < PA_GRANULARITY_MIN_VAL) ||
-	    (granularity > PA_GRANULARITY_MAX_VAL)) {
-		dev_err(hba->dev, "%s: invalid host PA_GRANULARITY %d",
-			__func__, granularity);
-		return -EINVAL;
-	}
-
-	if ((peer_granularity < PA_GRANULARITY_MIN_VAL) ||
-	    (peer_granularity > PA_GRANULARITY_MAX_VAL)) {
-		dev_err(hba->dev, "%s: invalid device PA_GRANULARITY %d",
-			__func__, peer_granularity);
-		return -EINVAL;
-	}
-
-	ret = ufshcd_dme_get(hba, UIC_ARG_MIB(PA_TACTIVATE), &pa_tactivate);
-	if (ret)
-		goto out;
-
-	ret = ufshcd_dme_peer_get(hba, UIC_ARG_MIB(PA_TACTIVATE),
-				  &peer_pa_tactivate);
-	if (ret)
-		goto out;
-
-	pa_tactivate_us = pa_tactivate * gran_to_us_table[granularity - 1];
-	peer_pa_tactivate_us = peer_pa_tactivate *
-			     gran_to_us_table[peer_granularity - 1];
-
-	if (pa_tactivate_us >= peer_pa_tactivate_us) {
-		u32 new_peer_pa_tactivate;
-
-		new_peer_pa_tactivate = pa_tactivate_us /
-				      gran_to_us_table[peer_granularity - 1];
-		new_peer_pa_tactivate++;
-		ret = ufshcd_dme_peer_set(hba, UIC_ARG_MIB(PA_TACTIVATE),
-					  new_peer_pa_tactivate);
-	}
-
-out:
-	return ret;
-}
-
-static void ufshcd_tune_unipro_params(struct ufs_hba *hba)
-{
-	if (ufshcd_is_unipro_pa_params_tuning_req(hba)) {
-		ufshcd_tune_pa_tactivate(hba);
-		ufshcd_tune_pa_hibern8time(hba);
-	}
-
-	ufshcd_vops_apply_dev_quirks(hba);
-
-	if (hba->dev_quirks & UFS_DEVICE_QUIRK_PA_TACTIVATE)
-		/* set 1ms timeout for PA_TACTIVATE */
-		ufshcd_dme_set(hba, UIC_ARG_MIB(PA_TACTIVATE), 10);
-
-	if (hba->dev_quirks & UFS_DEVICE_QUIRK_HOST_PA_TACTIVATE)
-		ufshcd_quirk_tune_host_pa_tactivate(hba);
-}
-
-static void ufshcd_clear_dbg_ufs_stats(struct ufs_hba *hba)
-{
-	hba->ufs_stats.hibern8_exit_cnt = 0;
-	hba->ufs_stats.last_hibern8_exit_tstamp = ktime_set(0, 0);
-	hba->req_abort_count = 0;
-}
-
-static int ufshcd_device_geo_params_init(struct ufs_hba *hba)
-{
-	int err;
-	size_t buff_len;
-	u8 *desc_buf;
-
-	buff_len = hba->desc_size[QUERY_DESC_IDN_GEOMETRY];
-	desc_buf = kmalloc(buff_len, GFP_KERNEL);
-	if (!desc_buf) {
-		err = -ENOMEM;
-		goto out;
-	}
-
-	err = ufshcd_read_desc_param(hba, QUERY_DESC_IDN_GEOMETRY, 0, 0,
-				     desc_buf, buff_len);
-	if (err) {
-		dev_err(hba->dev, "%s: Failed reading Geometry Desc. err = %d\n",
-				__func__, err);
-		goto out;
-	}
-
-	if (desc_buf[GEOMETRY_DESC_PARAM_MAX_NUM_LUN] == 1)
-		hba->dev_info.max_lu_supported = 32;
-	else if (desc_buf[GEOMETRY_DESC_PARAM_MAX_NUM_LUN] == 0)
-		hba->dev_info.max_lu_supported = 8;
-
-	if (hba->desc_size[QUERY_DESC_IDN_GEOMETRY] >=
-		GEOMETRY_DESC_PARAM_HPB_MAX_ACTIVE_REGS)
-		ufshpb_get_geo_info(hba, desc_buf);
-
-out:
-	kfree(desc_buf);
-	return err;
-}
-
-struct ufs_ref_clk {
-	unsigned long freq_hz;
-	enum ufs_ref_clk_freq val;
-};
-
-static struct ufs_ref_clk ufs_ref_clk_freqs[] = {
-	{19200000, REF_CLK_FREQ_19_2_MHZ},
-	{26000000, REF_CLK_FREQ_26_MHZ},
-	{38400000, REF_CLK_FREQ_38_4_MHZ},
-	{52000000, REF_CLK_FREQ_52_MHZ},
-	{0, REF_CLK_FREQ_INVAL},
-};
-
-static enum ufs_ref_clk_freq
-ufs_get_bref_clk_from_hz(unsigned long freq)
-{
-	int i;
-
-	for (i = 0; ufs_ref_clk_freqs[i].freq_hz; i++)
-		if (ufs_ref_clk_freqs[i].freq_hz == freq)
-			return ufs_ref_clk_freqs[i].val;
-
-	return REF_CLK_FREQ_INVAL;
-}
-
-void ufshcd_parse_dev_ref_clk_freq(struct ufs_hba *hba, struct clk *refclk)
-{
-	unsigned long freq;
-
-	freq = clk_get_rate(refclk);
-
-	hba->dev_ref_clk_freq =
-		ufs_get_bref_clk_from_hz(freq);
-
-	if (hba->dev_ref_clk_freq == REF_CLK_FREQ_INVAL)
-		dev_err(hba->dev,
-		"invalid ref_clk setting = %ld\n", freq);
-}
-
-static int ufshcd_set_dev_ref_clk(struct ufs_hba *hba)
-{
-	int err;
-	u32 ref_clk;
-	u32 freq = hba->dev_ref_clk_freq;
-
-	err = ufshcd_query_attr_retry(hba, UPIU_QUERY_OPCODE_READ_ATTR,
-			QUERY_ATTR_IDN_REF_CLK_FREQ, 0, 0, &ref_clk);
-
-	if (err) {
-		dev_err(hba->dev, "failed reading bRefClkFreq. err = %d\n",
-			err);
-		goto out;
-	}
-
-	if (ref_clk == freq)
-		goto out; /* nothing to update */
-
-	err = ufshcd_query_attr_retry(hba, UPIU_QUERY_OPCODE_WRITE_ATTR,
-			QUERY_ATTR_IDN_REF_CLK_FREQ, 0, 0, &freq);
-
-	if (err) {
-		dev_err(hba->dev, "bRefClkFreq setting to %lu Hz failed\n",
-			ufs_ref_clk_freqs[freq].freq_hz);
-		goto out;
-	}
-
-	dev_dbg(hba->dev, "bRefClkFreq setting to %lu Hz succeeded\n",
-			ufs_ref_clk_freqs[freq].freq_hz);
-
-out:
-	return err;
-}
-
-static int ufshcd_device_params_init(struct ufs_hba *hba)
-{
-	bool flag;
-	int ret, i;
-
-	 /* Init device descriptor sizes */
-	for (i = 0; i < QUERY_DESC_IDN_MAX; i++)
-		hba->desc_size[i] = QUERY_DESC_MAX_SIZE;
-
-	/* Init UFS geometry descriptor related parameters */
-	ret = ufshcd_device_geo_params_init(hba);
-	if (ret)
-		goto out;
-
-	/* Check and apply UFS device quirks */
-	ret = ufs_get_device_desc(hba);
-	if (ret) {
-		dev_err(hba->dev, "%s: Failed getting device info. err = %d\n",
-			__func__, ret);
-		goto out;
-	}
-
-	ufshcd_get_ref_clk_gating_wait(hba);
-
-	if (!ufshcd_query_flag_retry(hba, UPIU_QUERY_OPCODE_READ_FLAG,
-			QUERY_FLAG_IDN_PWR_ON_WPE, 0, &flag))
-		hba->dev_info.f_power_on_wp_en = flag;
-
-	/* Probe maximum power mode co-supported by both UFS host and device */
-	if (ufshcd_get_max_pwr_mode(hba))
-		dev_err(hba->dev,
-			"%s: Failed getting max supported power mode\n",
-			__func__);
-out:
-	return ret;
-}
-
-/**
- * ufshcd_add_lus - probe and add UFS logical units
- * @hba: per-adapter instance
- */
-static int ufshcd_add_lus(struct ufs_hba *hba)
-{
-	int ret;
-
-	/* Add required well known logical units to scsi mid layer */
-	ret = ufshcd_scsi_add_wlus(hba);
-	if (ret)
-		goto out;
-
-	/* Initialize devfreq after UFS device is detected */
-	if (ufshcd_is_clkscaling_supported(hba)) {
-		memcpy(&hba->clk_scaling.saved_pwr_info.info,
-			&hba->pwr_info,
-			sizeof(struct ufs_pa_layer_attr));
-		hba->clk_scaling.saved_pwr_info.is_valid = true;
-		hba->clk_scaling.is_allowed = true;
-
-		ret = ufshcd_devfreq_init(hba);
-		if (ret)
-			goto out;
-
-		hba->clk_scaling.is_enabled = true;
-		ufshcd_init_clk_scaling_sysfs(hba);
-	}
-
-	ufs_bsg_probe(hba);
-	ufshpb_init(hba);
-	scsi_scan_host(hba->host);
-	pm_runtime_put_sync(hba->dev);
-
-out:
-	return ret;
-}
-
-/**
- * ufshcd_probe_hba - probe hba to detect device and initialize it
- * @hba: per-adapter instance
- * @init_dev_params: whether or not to call ufshcd_device_params_init().
- *
- * Execute link-startup and verify device initialization
- */
-static int ufshcd_probe_hba(struct ufs_hba *hba, bool init_dev_params)
-{
-	int ret;
-	unsigned long flags;
-	ktime_t start = ktime_get();
-
-	hba->ufshcd_state = UFSHCD_STATE_RESET;
-
-	ret = ufshcd_link_startup(hba);
-	if (ret)
-		goto out;
-
-	if (hba->quirks & UFSHCD_QUIRK_SKIP_PH_CONFIGURATION)
-		goto out;
-
-	/* Debug counters initialization */
-	ufshcd_clear_dbg_ufs_stats(hba);
-
-	/* UniPro link is active now */
-	ufshcd_set_link_active(hba);
-
-	/* Verify device initialization by sending NOP OUT UPIU */
-	ret = ufshcd_verify_dev_init(hba);
-	if (ret)
-		goto out;
-
-	/* Initiate UFS initialization, and waiting until completion */
-	ret = ufshcd_complete_dev_init(hba);
-	if (ret)
-		goto out;
-
-	/*
-	 * Initialize UFS device parameters used by driver, these
-	 * parameters are associated with UFS descriptors.
-	 */
-	if (init_dev_params) {
-		ret = ufshcd_device_params_init(hba);
-		if (ret)
-			goto out;
-	}
-
-	ufshcd_tune_unipro_params(hba);
-
-	/* UFS device is also active now */
-	ufshcd_set_ufs_dev_active(hba);
-	ufshcd_force_reset_auto_bkops(hba);
-
-	/* Gear up to HS gear if supported */
-	if (hba->max_pwr_info.is_valid) {
-		/*
-		 * Set the right value to bRefClkFreq before attempting to
-		 * switch to HS gears.
-		 */
-		if (hba->dev_ref_clk_freq != REF_CLK_FREQ_INVAL)
-			ufshcd_set_dev_ref_clk(hba);
-		ret = ufshcd_config_pwr_mode(hba, &hba->max_pwr_info.info);
-		if (ret) {
-			dev_err(hba->dev, "%s: Failed setting power mode, err = %d\n",
-					__func__, ret);
-			goto out;
-		}
-		ufshcd_print_pwr_info(hba);
-	}
-
-	/*
-	 * bActiveICCLevel is volatile for UFS device (as per latest v2.1 spec)
-	 * and for removable UFS card as well, hence always set the parameter.
-	 * Note: Error handler may issue the device reset hence resetting
-	 * bActiveICCLevel as well so it is always safe to set this here.
-	 */
-	ufshcd_set_active_icc_lvl(hba);
-
-	ufshcd_wb_config(hba);
-	if (hba->ee_usr_mask)
-		ufshcd_write_ee_control(hba);
-	/* Enable Auto-Hibernate if configured */
-	ufshcd_auto_hibern8_enable(hba);
-
-	ufshpb_toggle_state(hba, HPB_RESET, HPB_PRESENT);
-out:
-	spin_lock_irqsave(hba->host->host_lock, flags);
-	if (ret)
-		hba->ufshcd_state = UFSHCD_STATE_ERROR;
-	else if (hba->ufshcd_state == UFSHCD_STATE_RESET)
-		hba->ufshcd_state = UFSHCD_STATE_OPERATIONAL;
-	spin_unlock_irqrestore(hba->host->host_lock, flags);
-
-	trace_ufshcd_init(dev_name(hba->dev), ret,
-		ktime_to_us(ktime_sub(ktime_get(), start)),
-		hba->curr_dev_pwr_mode, hba->uic_link_state);
-	return ret;
-}
-
-/**
- * ufshcd_async_scan - asynchronous execution for probing hba
- * @data: data pointer to pass to this function
- * @cookie: cookie data
- */
-static void ufshcd_async_scan(void *data, async_cookie_t cookie)
-{
-	struct ufs_hba *hba = (struct ufs_hba *)data;
-	int ret;
-
-	down(&hba->host_sem);
-	/* Initialize hba, detect and initialize UFS device */
-	ret = ufshcd_probe_hba(hba, true);
-	up(&hba->host_sem);
-	if (ret)
-		goto out;
-
-	/* Probe and add UFS logical units  */
-	ret = ufshcd_add_lus(hba);
-out:
-	/*
-	 * If we failed to initialize the device or the device is not
-	 * present, turn off the power/clocks etc.
-	 */
-	if (ret) {
-		pm_runtime_put_sync(hba->dev);
-		ufshcd_hba_exit(hba);
-	}
-}
-
-static const struct attribute_group *ufshcd_driver_groups[] = {
-	&ufs_sysfs_unit_descriptor_group,
-	&ufs_sysfs_lun_attributes_group,
-#ifdef CONFIG_SCSI_UFS_HPB
-	&ufs_sysfs_hpb_stat_group,
-	&ufs_sysfs_hpb_param_group,
-#endif
-	NULL,
-};
-
-static struct ufs_hba_variant_params ufs_hba_vps = {
-	.hba_enable_delay_us		= 1000,
-	.wb_flush_threshold		= UFS_WB_BUF_REMAIN_PERCENT(40),
-	.devfreq_profile.polling_ms	= 100,
-	.devfreq_profile.target		= ufshcd_devfreq_target,
-	.devfreq_profile.get_dev_status	= ufshcd_devfreq_get_dev_status,
-	.ondemand_data.upthreshold	= 70,
-	.ondemand_data.downdifferential	= 5,
-};
-
-static struct scsi_host_template ufshcd_driver_template = {
-	.module			= THIS_MODULE,
-	.name			= UFSHCD,
-	.proc_name		= UFSHCD,
-	.map_queues		= ufshcd_map_queues,
-	.queuecommand		= ufshcd_queuecommand,
-	.mq_poll		= ufshcd_poll,
-	.slave_alloc		= ufshcd_slave_alloc,
-	.slave_configure	= ufshcd_slave_configure,
-	.slave_destroy		= ufshcd_slave_destroy,
-	.change_queue_depth	= ufshcd_change_queue_depth,
-	.eh_abort_handler	= ufshcd_abort,
-	.eh_device_reset_handler = ufshcd_eh_device_reset_handler,
-	.eh_host_reset_handler   = ufshcd_eh_host_reset_handler,
-	.this_id		= -1,
-	.sg_tablesize		= SG_ALL,
-	.cmd_per_lun		= UFSHCD_CMD_PER_LUN,
-	.can_queue		= UFSHCD_CAN_QUEUE,
-	.max_segment_size	= PRDT_DATA_BYTE_COUNT_MAX,
-	.max_host_blocked	= 1,
-	.track_queue_depth	= 1,
-	.sdev_groups		= ufshcd_driver_groups,
-	.dma_boundary		= PAGE_SIZE - 1,
-	.rpm_autosuspend_delay	= RPM_AUTOSUSPEND_DELAY_MS,
-};
-
-static int ufshcd_config_vreg_load(struct device *dev, struct ufs_vreg *vreg,
-				   int ua)
-{
-	int ret;
-
-	if (!vreg)
-		return 0;
-
-	/*
-	 * "set_load" operation shall be required on those regulators
-	 * which specifically configured current limitation. Otherwise
-	 * zero max_uA may cause unexpected behavior when regulator is
-	 * enabled or set as high power mode.
-	 */
-	if (!vreg->max_uA)
-		return 0;
-
-	ret = regulator_set_load(vreg->reg, ua);
-	if (ret < 0) {
-		dev_err(dev, "%s: %s set load (ua=%d) failed, err=%d\n",
-				__func__, vreg->name, ua, ret);
-	}
-
-	return ret;
-}
-
-static inline int ufshcd_config_vreg_lpm(struct ufs_hba *hba,
-					 struct ufs_vreg *vreg)
-{
-	return ufshcd_config_vreg_load(hba->dev, vreg, UFS_VREG_LPM_LOAD_UA);
-}
-
-static inline int ufshcd_config_vreg_hpm(struct ufs_hba *hba,
-					 struct ufs_vreg *vreg)
-{
-	if (!vreg)
-		return 0;
-
-	return ufshcd_config_vreg_load(hba->dev, vreg, vreg->max_uA);
-}
-
-static int ufshcd_config_vreg(struct device *dev,
-		struct ufs_vreg *vreg, bool on)
-{
-	if (regulator_count_voltages(vreg->reg) <= 0)
-		return 0;
-
-	return ufshcd_config_vreg_load(dev, vreg, on ? vreg->max_uA : 0);
-}
-
-static int ufshcd_enable_vreg(struct device *dev, struct ufs_vreg *vreg)
-{
-	int ret = 0;
-
-	if (!vreg || vreg->enabled)
-		goto out;
-
-	ret = ufshcd_config_vreg(dev, vreg, true);
-	if (!ret)
-		ret = regulator_enable(vreg->reg);
-
-	if (!ret)
-		vreg->enabled = true;
-	else
-		dev_err(dev, "%s: %s enable failed, err=%d\n",
-				__func__, vreg->name, ret);
-out:
-	return ret;
-}
-
-static int ufshcd_disable_vreg(struct device *dev, struct ufs_vreg *vreg)
-{
-	int ret = 0;
-
-	if (!vreg || !vreg->enabled || vreg->always_on)
-		goto out;
-
-	ret = regulator_disable(vreg->reg);
-
-	if (!ret) {
-		/* ignore errors on applying disable config */
-		ufshcd_config_vreg(dev, vreg, false);
-		vreg->enabled = false;
-	} else {
-		dev_err(dev, "%s: %s disable failed, err=%d\n",
-				__func__, vreg->name, ret);
-	}
-out:
-	return ret;
-}
-
-static int ufshcd_setup_vreg(struct ufs_hba *hba, bool on)
-{
-	int ret = 0;
-	struct device *dev = hba->dev;
-	struct ufs_vreg_info *info = &hba->vreg_info;
-
-	ret = ufshcd_toggle_vreg(dev, info->vcc, on);
-	if (ret)
-		goto out;
-
-	ret = ufshcd_toggle_vreg(dev, info->vccq, on);
-	if (ret)
-		goto out;
-
-	ret = ufshcd_toggle_vreg(dev, info->vccq2, on);
-
-out:
-	if (ret) {
-		ufshcd_toggle_vreg(dev, info->vccq2, false);
-		ufshcd_toggle_vreg(dev, info->vccq, false);
-		ufshcd_toggle_vreg(dev, info->vcc, false);
-	}
-	return ret;
-}
-
-static int ufshcd_setup_hba_vreg(struct ufs_hba *hba, bool on)
-{
-	struct ufs_vreg_info *info = &hba->vreg_info;
-
-	return ufshcd_toggle_vreg(hba->dev, info->vdd_hba, on);
-}
-
-static int ufshcd_get_vreg(struct device *dev, struct ufs_vreg *vreg)
-{
-	int ret = 0;
-
-	if (!vreg)
-		goto out;
-
-	vreg->reg = devm_regulator_get(dev, vreg->name);
-	if (IS_ERR(vreg->reg)) {
-		ret = PTR_ERR(vreg->reg);
-		dev_err(dev, "%s: %s get failed, err=%d\n",
-				__func__, vreg->name, ret);
-	}
-out:
-	return ret;
-}
-
-static int ufshcd_init_vreg(struct ufs_hba *hba)
-{
-	int ret = 0;
-	struct device *dev = hba->dev;
-	struct ufs_vreg_info *info = &hba->vreg_info;
-
-	ret = ufshcd_get_vreg(dev, info->vcc);
-	if (ret)
-		goto out;
-
-	ret = ufshcd_get_vreg(dev, info->vccq);
-	if (!ret)
-		ret = ufshcd_get_vreg(dev, info->vccq2);
-out:
-	return ret;
-}
-
-static int ufshcd_init_hba_vreg(struct ufs_hba *hba)
-{
-	struct ufs_vreg_info *info = &hba->vreg_info;
-
-	if (info)
-		return ufshcd_get_vreg(hba->dev, info->vdd_hba);
-
-	return 0;
-}
-
-static int ufshcd_setup_clocks(struct ufs_hba *hba, bool on)
-{
-	int ret = 0;
-	struct ufs_clk_info *clki;
-	struct list_head *head = &hba->clk_list_head;
-	unsigned long flags;
-	ktime_t start = ktime_get();
-	bool clk_state_changed = false;
-
-	if (list_empty(head))
-		goto out;
-
-	ret = ufshcd_vops_setup_clocks(hba, on, PRE_CHANGE);
-	if (ret)
-		return ret;
-
-	list_for_each_entry(clki, head, list) {
-		if (!IS_ERR_OR_NULL(clki->clk)) {
-			/*
-			 * Don't disable clocks which are needed
-			 * to keep the link active.
-			 */
-			if (ufshcd_is_link_active(hba) &&
-			    clki->keep_link_active)
-				continue;
-
-			clk_state_changed = on ^ clki->enabled;
-			if (on && !clki->enabled) {
-				ret = clk_prepare_enable(clki->clk);
-				if (ret) {
-					dev_err(hba->dev, "%s: %s prepare enable failed, %d\n",
-						__func__, clki->name, ret);
-					goto out;
-				}
-			} else if (!on && clki->enabled) {
-				clk_disable_unprepare(clki->clk);
-			}
-			clki->enabled = on;
-			dev_dbg(hba->dev, "%s: clk: %s %sabled\n", __func__,
-					clki->name, on ? "en" : "dis");
-		}
-	}
-
-	ret = ufshcd_vops_setup_clocks(hba, on, POST_CHANGE);
-	if (ret)
-		return ret;
-
-out:
-	if (ret) {
-		list_for_each_entry(clki, head, list) {
-			if (!IS_ERR_OR_NULL(clki->clk) && clki->enabled)
-				clk_disable_unprepare(clki->clk);
-		}
-	} else if (!ret && on) {
-		spin_lock_irqsave(hba->host->host_lock, flags);
-		hba->clk_gating.state = CLKS_ON;
-		trace_ufshcd_clk_gating(dev_name(hba->dev),
-					hba->clk_gating.state);
-		spin_unlock_irqrestore(hba->host->host_lock, flags);
-	}
-
-	if (clk_state_changed)
-		trace_ufshcd_profile_clk_gating(dev_name(hba->dev),
-			(on ? "on" : "off"),
-			ktime_to_us(ktime_sub(ktime_get(), start)), ret);
-	return ret;
-}
-
-static int ufshcd_init_clocks(struct ufs_hba *hba)
-{
-	int ret = 0;
-	struct ufs_clk_info *clki;
-	struct device *dev = hba->dev;
-	struct list_head *head = &hba->clk_list_head;
-
-	if (list_empty(head))
-		goto out;
-
-	list_for_each_entry(clki, head, list) {
-		if (!clki->name)
-			continue;
-
-		clki->clk = devm_clk_get(dev, clki->name);
-		if (IS_ERR(clki->clk)) {
-			ret = PTR_ERR(clki->clk);
-			dev_err(dev, "%s: %s clk get failed, %d\n",
-					__func__, clki->name, ret);
-			goto out;
-		}
-
-		/*
-		 * Parse device ref clk freq as per device tree "ref_clk".
-		 * Default dev_ref_clk_freq is set to REF_CLK_FREQ_INVAL
-		 * in ufshcd_alloc_host().
-		 */
-		if (!strcmp(clki->name, "ref_clk"))
-			ufshcd_parse_dev_ref_clk_freq(hba, clki->clk);
-
-		if (clki->max_freq) {
-			ret = clk_set_rate(clki->clk, clki->max_freq);
-			if (ret) {
-				dev_err(hba->dev, "%s: %s clk set rate(%dHz) failed, %d\n",
-					__func__, clki->name,
-					clki->max_freq, ret);
-				goto out;
-			}
-			clki->curr_freq = clki->max_freq;
-		}
-		dev_dbg(dev, "%s: clk: %s, rate: %lu\n", __func__,
-				clki->name, clk_get_rate(clki->clk));
-	}
-out:
-	return ret;
-}
-
-static int ufshcd_variant_hba_init(struct ufs_hba *hba)
-{
-	int err = 0;
-
-	if (!hba->vops)
-		goto out;
-
-	err = ufshcd_vops_init(hba);
-	if (err)
-		dev_err(hba->dev, "%s: variant %s init failed err %d\n",
-			__func__, ufshcd_get_var_name(hba), err);
-out:
-	return err;
-}
-
-static void ufshcd_variant_hba_exit(struct ufs_hba *hba)
-{
-	if (!hba->vops)
-		return;
-
-	ufshcd_vops_exit(hba);
-}
-
-static int ufshcd_hba_init(struct ufs_hba *hba)
-{
-	int err;
-
-	/*
-	 * Handle host controller power separately from the UFS device power
-	 * rails as it will help controlling the UFS host controller power
-	 * collapse easily which is different than UFS device power collapse.
-	 * Also, enable the host controller power before we go ahead with rest
-	 * of the initialization here.
-	 */
-	err = ufshcd_init_hba_vreg(hba);
-	if (err)
-		goto out;
-
-	err = ufshcd_setup_hba_vreg(hba, true);
-	if (err)
-		goto out;
-
-	err = ufshcd_init_clocks(hba);
-	if (err)
-		goto out_disable_hba_vreg;
-
-	err = ufshcd_setup_clocks(hba, true);
-	if (err)
-		goto out_disable_hba_vreg;
-
-	err = ufshcd_init_vreg(hba);
-	if (err)
-		goto out_disable_clks;
-
-	err = ufshcd_setup_vreg(hba, true);
-	if (err)
-		goto out_disable_clks;
-
-	err = ufshcd_variant_hba_init(hba);
-	if (err)
-		goto out_disable_vreg;
-
-	ufs_debugfs_hba_init(hba);
-
-	hba->is_powered = true;
-	goto out;
-
-out_disable_vreg:
-	ufshcd_setup_vreg(hba, false);
-out_disable_clks:
-	ufshcd_setup_clocks(hba, false);
-out_disable_hba_vreg:
-	ufshcd_setup_hba_vreg(hba, false);
-out:
-	return err;
-}
-
-static void ufshcd_hba_exit(struct ufs_hba *hba)
-{
-	if (hba->is_powered) {
-		ufshcd_exit_clk_scaling(hba);
-		ufshcd_exit_clk_gating(hba);
-		if (hba->eh_wq)
-			destroy_workqueue(hba->eh_wq);
-		ufs_debugfs_hba_exit(hba);
-		ufshcd_variant_hba_exit(hba);
-		ufshcd_setup_vreg(hba, false);
-		ufshcd_setup_clocks(hba, false);
-		ufshcd_setup_hba_vreg(hba, false);
-		hba->is_powered = false;
-		ufs_put_device_desc(hba);
-	}
-}
-
-/**
- * ufshcd_set_dev_pwr_mode - sends START STOP UNIT command to set device
- *			     power mode
- * @hba: per adapter instance
- * @pwr_mode: device power mode to set
- *
- * Returns 0 if requested power mode is set successfully
- * Returns < 0 if failed to set the requested power mode
- */
-static int ufshcd_set_dev_pwr_mode(struct ufs_hba *hba,
-				     enum ufs_dev_pwr_mode pwr_mode)
-{
-	unsigned char cmd[6] = { START_STOP };
-	struct scsi_sense_hdr sshdr;
-	struct scsi_device *sdp;
-	unsigned long flags;
-	int ret, retries;
-
-	spin_lock_irqsave(hba->host->host_lock, flags);
-	sdp = hba->ufs_device_wlun;
-	if (sdp) {
-		ret = scsi_device_get(sdp);
-		if (!ret && !scsi_device_online(sdp)) {
-			ret = -ENODEV;
-			scsi_device_put(sdp);
-		}
-	} else {
-		ret = -ENODEV;
-	}
-	spin_unlock_irqrestore(hba->host->host_lock, flags);
-
-	if (ret)
-		return ret;
-
-	/*
-	 * If scsi commands fail, the scsi mid-layer schedules scsi error-
-	 * handling, which would wait for host to be resumed. Since we know
-	 * we are functional while we are here, skip host resume in error
-	 * handling context.
-	 */
-	hba->host->eh_noresume = 1;
-
-	cmd[4] = pwr_mode << 4;
-
-	/*
-	 * Current function would be generally called from the power management
-	 * callbacks hence set the RQF_PM flag so that it doesn't resume the
-	 * already suspended childs.
-	 */
-	for (retries = 3; retries > 0; --retries) {
-		ret = scsi_execute(sdp, cmd, DMA_NONE, NULL, 0, NULL, &sshdr,
-				START_STOP_TIMEOUT, 0, 0, RQF_PM, NULL);
-		if (!scsi_status_is_check_condition(ret) ||
-				!scsi_sense_valid(&sshdr) ||
-				sshdr.sense_key != UNIT_ATTENTION)
-			break;
-	}
-	if (ret) {
-		sdev_printk(KERN_WARNING, sdp,
-			    "START_STOP failed for power mode: %d, result %x\n",
-			    pwr_mode, ret);
-		if (ret > 0) {
-			if (scsi_sense_valid(&sshdr))
-				scsi_print_sense_hdr(sdp, NULL, &sshdr);
-			ret = -EIO;
-		}
-	}
-
-	if (!ret)
-		hba->curr_dev_pwr_mode = pwr_mode;
-
-	scsi_device_put(sdp);
-	hba->host->eh_noresume = 0;
-	return ret;
-}
-
-static int ufshcd_link_state_transition(struct ufs_hba *hba,
-					enum uic_link_state req_link_state,
-					int check_for_bkops)
-{
-	int ret = 0;
-
-	if (req_link_state == hba->uic_link_state)
-		return 0;
-
-	if (req_link_state == UIC_LINK_HIBERN8_STATE) {
-		ret = ufshcd_uic_hibern8_enter(hba);
-		if (!ret) {
-			ufshcd_set_link_hibern8(hba);
-		} else {
-			dev_err(hba->dev, "%s: hibern8 enter failed %d\n",
-					__func__, ret);
-			goto out;
-		}
-	}
-	/*
-	 * If autobkops is enabled, link can't be turned off because
-	 * turning off the link would also turn off the device, except in the
-	 * case of DeepSleep where the device is expected to remain powered.
-	 */
-	else if ((req_link_state == UIC_LINK_OFF_STATE) &&
-		 (!check_for_bkops || !hba->auto_bkops_enabled)) {
-		/*
-		 * Let's make sure that link is in low power mode, we are doing
-		 * this currently by putting the link in Hibern8. Otherway to
-		 * put the link in low power mode is to send the DME end point
-		 * to device and then send the DME reset command to local
-		 * unipro. But putting the link in hibern8 is much faster.
-		 *
-		 * Note also that putting the link in Hibern8 is a requirement
-		 * for entering DeepSleep.
-		 */
-		ret = ufshcd_uic_hibern8_enter(hba);
-		if (ret) {
-			dev_err(hba->dev, "%s: hibern8 enter failed %d\n",
-					__func__, ret);
-			goto out;
-		}
-		/*
-		 * Change controller state to "reset state" which
-		 * should also put the link in off/reset state
-		 */
-		ufshcd_hba_stop(hba);
-		/*
-		 * TODO: Check if we need any delay to make sure that
-		 * controller is reset
-		 */
-		ufshcd_set_link_off(hba);
-	}
-
-out:
-	return ret;
-}
-
-static void ufshcd_vreg_set_lpm(struct ufs_hba *hba)
-{
-	bool vcc_off = false;
-
-	/*
-	 * It seems some UFS devices may keep drawing more than sleep current
-	 * (atleast for 500us) from UFS rails (especially from VCCQ rail).
-	 * To avoid this situation, add 2ms delay before putting these UFS
-	 * rails in LPM mode.
-	 */
-	if (!ufshcd_is_link_active(hba) &&
-	    hba->dev_quirks & UFS_DEVICE_QUIRK_DELAY_BEFORE_LPM)
-		usleep_range(2000, 2100);
-
-	/*
-	 * If UFS device is either in UFS_Sleep turn off VCC rail to save some
-	 * power.
-	 *
-	 * If UFS device and link is in OFF state, all power supplies (VCC,
-	 * VCCQ, VCCQ2) can be turned off if power on write protect is not
-	 * required. If UFS link is inactive (Hibern8 or OFF state) and device
-	 * is in sleep state, put VCCQ & VCCQ2 rails in LPM mode.
-	 *
-	 * Ignore the error returned by ufshcd_toggle_vreg() as device is anyway
-	 * in low power state which would save some power.
-	 *
-	 * If Write Booster is enabled and the device needs to flush the WB
-	 * buffer OR if bkops status is urgent for WB, keep Vcc on.
-	 */
-	if (ufshcd_is_ufs_dev_poweroff(hba) && ufshcd_is_link_off(hba) &&
-	    !hba->dev_info.is_lu_power_on_wp) {
-		ufshcd_setup_vreg(hba, false);
-		vcc_off = true;
-	} else if (!ufshcd_is_ufs_dev_active(hba)) {
-		ufshcd_toggle_vreg(hba->dev, hba->vreg_info.vcc, false);
-		vcc_off = true;
-		if (ufshcd_is_link_hibern8(hba) || ufshcd_is_link_off(hba)) {
-			ufshcd_config_vreg_lpm(hba, hba->vreg_info.vccq);
-			ufshcd_config_vreg_lpm(hba, hba->vreg_info.vccq2);
-		}
-	}
-
-	/*
-	 * Some UFS devices require delay after VCC power rail is turned-off.
-	 */
-	if (vcc_off && hba->vreg_info.vcc &&
-		hba->dev_quirks & UFS_DEVICE_QUIRK_DELAY_AFTER_LPM)
-		usleep_range(5000, 5100);
-}
-
-#ifdef CONFIG_PM
-static int ufshcd_vreg_set_hpm(struct ufs_hba *hba)
-{
-	int ret = 0;
-
-	if (ufshcd_is_ufs_dev_poweroff(hba) && ufshcd_is_link_off(hba) &&
-	    !hba->dev_info.is_lu_power_on_wp) {
-		ret = ufshcd_setup_vreg(hba, true);
-	} else if (!ufshcd_is_ufs_dev_active(hba)) {
-		if (!ufshcd_is_link_active(hba)) {
-			ret = ufshcd_config_vreg_hpm(hba, hba->vreg_info.vccq);
-			if (ret)
-				goto vcc_disable;
-			ret = ufshcd_config_vreg_hpm(hba, hba->vreg_info.vccq2);
-			if (ret)
-				goto vccq_lpm;
-		}
-		ret = ufshcd_toggle_vreg(hba->dev, hba->vreg_info.vcc, true);
-	}
-	goto out;
-
-vccq_lpm:
-	ufshcd_config_vreg_lpm(hba, hba->vreg_info.vccq);
-vcc_disable:
-	ufshcd_toggle_vreg(hba->dev, hba->vreg_info.vcc, false);
-out:
-	return ret;
-}
-#endif /* CONFIG_PM */
-
-static void ufshcd_hba_vreg_set_lpm(struct ufs_hba *hba)
-{
-	if (ufshcd_is_link_off(hba) || ufshcd_can_aggressive_pc(hba))
-		ufshcd_setup_hba_vreg(hba, false);
-}
-
-static void ufshcd_hba_vreg_set_hpm(struct ufs_hba *hba)
-{
-	if (ufshcd_is_link_off(hba) || ufshcd_can_aggressive_pc(hba))
-		ufshcd_setup_hba_vreg(hba, true);
-}
-
-static int __ufshcd_wl_suspend(struct ufs_hba *hba, enum ufs_pm_op pm_op)
-{
-	int ret = 0;
-	int check_for_bkops;
-	enum ufs_pm_level pm_lvl;
-	enum ufs_dev_pwr_mode req_dev_pwr_mode;
-	enum uic_link_state req_link_state;
-
-	hba->pm_op_in_progress = true;
-	if (pm_op != UFS_SHUTDOWN_PM) {
-		pm_lvl = pm_op == UFS_RUNTIME_PM ?
-			 hba->rpm_lvl : hba->spm_lvl;
-		req_dev_pwr_mode = ufs_get_pm_lvl_to_dev_pwr_mode(pm_lvl);
-		req_link_state = ufs_get_pm_lvl_to_link_pwr_state(pm_lvl);
-	} else {
-		req_dev_pwr_mode = UFS_POWERDOWN_PWR_MODE;
-		req_link_state = UIC_LINK_OFF_STATE;
-	}
-
-	ufshpb_suspend(hba);
-
-	/*
-	 * If we can't transition into any of the low power modes
-	 * just gate the clocks.
-	 */
-	ufshcd_hold(hba, false);
-	hba->clk_gating.is_suspended = true;
-
-	if (ufshcd_is_clkscaling_supported(hba))
-		ufshcd_clk_scaling_suspend(hba, true);
-
-	if (req_dev_pwr_mode == UFS_ACTIVE_PWR_MODE &&
-			req_link_state == UIC_LINK_ACTIVE_STATE) {
-		goto vops_suspend;
-	}
-
-	if ((req_dev_pwr_mode == hba->curr_dev_pwr_mode) &&
-	    (req_link_state == hba->uic_link_state))
-		goto enable_scaling;
-
-	/* UFS device & link must be active before we enter in this function */
-	if (!ufshcd_is_ufs_dev_active(hba) || !ufshcd_is_link_active(hba)) {
-		ret = -EINVAL;
-		goto enable_scaling;
-	}
-
-	if (pm_op == UFS_RUNTIME_PM) {
-		if (ufshcd_can_autobkops_during_suspend(hba)) {
-			/*
-			 * The device is idle with no requests in the queue,
-			 * allow background operations if bkops status shows
-			 * that performance might be impacted.
-			 */
-			ret = ufshcd_urgent_bkops(hba);
-			if (ret)
-				goto enable_scaling;
-		} else {
-			/* make sure that auto bkops is disabled */
-			ufshcd_disable_auto_bkops(hba);
-		}
-		/*
-		 * If device needs to do BKOP or WB buffer flush during
-		 * Hibern8, keep device power mode as "active power mode"
-		 * and VCC supply.
-		 */
-		hba->dev_info.b_rpm_dev_flush_capable =
-			hba->auto_bkops_enabled ||
-			(((req_link_state == UIC_LINK_HIBERN8_STATE) ||
-			((req_link_state == UIC_LINK_ACTIVE_STATE) &&
-			ufshcd_is_auto_hibern8_enabled(hba))) &&
-			ufshcd_wb_need_flush(hba));
-	}
-
-	flush_work(&hba->eeh_work);
-
-	ret = ufshcd_vops_suspend(hba, pm_op, PRE_CHANGE);
-	if (ret)
-		goto enable_scaling;
-
-	if (req_dev_pwr_mode != hba->curr_dev_pwr_mode) {
-		if (pm_op != UFS_RUNTIME_PM)
-			/* ensure that bkops is disabled */
-			ufshcd_disable_auto_bkops(hba);
-
-		if (!hba->dev_info.b_rpm_dev_flush_capable) {
-			ret = ufshcd_set_dev_pwr_mode(hba, req_dev_pwr_mode);
-			if (ret)
-				goto enable_scaling;
-		}
-	}
-
-	/*
-	 * In the case of DeepSleep, the device is expected to remain powered
-	 * with the link off, so do not check for bkops.
-	 */
-	check_for_bkops = !ufshcd_is_ufs_dev_deepsleep(hba);
-	ret = ufshcd_link_state_transition(hba, req_link_state, check_for_bkops);
-	if (ret)
-		goto set_dev_active;
-
-vops_suspend:
-	/*
-	 * Call vendor specific suspend callback. As these callbacks may access
-	 * vendor specific host controller register space call them before the
-	 * host clocks are ON.
-	 */
-	ret = ufshcd_vops_suspend(hba, pm_op, POST_CHANGE);
-	if (ret)
-		goto set_link_active;
-	goto out;
-
-set_link_active:
-	/*
-	 * Device hardware reset is required to exit DeepSleep. Also, for
-	 * DeepSleep, the link is off so host reset and restore will be done
-	 * further below.
-	 */
-	if (ufshcd_is_ufs_dev_deepsleep(hba)) {
-		ufshcd_device_reset(hba);
-		WARN_ON(!ufshcd_is_link_off(hba));
-	}
-	if (ufshcd_is_link_hibern8(hba) && !ufshcd_uic_hibern8_exit(hba))
-		ufshcd_set_link_active(hba);
-	else if (ufshcd_is_link_off(hba))
-		ufshcd_host_reset_and_restore(hba);
-set_dev_active:
-	/* Can also get here needing to exit DeepSleep */
-	if (ufshcd_is_ufs_dev_deepsleep(hba)) {
-		ufshcd_device_reset(hba);
-		ufshcd_host_reset_and_restore(hba);
-	}
-	if (!ufshcd_set_dev_pwr_mode(hba, UFS_ACTIVE_PWR_MODE))
-		ufshcd_disable_auto_bkops(hba);
-enable_scaling:
-	if (ufshcd_is_clkscaling_supported(hba))
-		ufshcd_clk_scaling_suspend(hba, false);
-
-	hba->dev_info.b_rpm_dev_flush_capable = false;
-out:
-	if (hba->dev_info.b_rpm_dev_flush_capable) {
-		schedule_delayed_work(&hba->rpm_dev_flush_recheck_work,
-			msecs_to_jiffies(RPM_DEV_FLUSH_RECHECK_WORK_DELAY_MS));
-	}
-
-	if (ret) {
-		ufshcd_update_evt_hist(hba, UFS_EVT_WL_SUSP_ERR, (u32)ret);
-		hba->clk_gating.is_suspended = false;
-		ufshcd_release(hba);
-		ufshpb_resume(hba);
-	}
-	hba->pm_op_in_progress = false;
-	return ret;
-}
-
-#ifdef CONFIG_PM
-static int __ufshcd_wl_resume(struct ufs_hba *hba, enum ufs_pm_op pm_op)
-{
-	int ret;
-	enum uic_link_state old_link_state = hba->uic_link_state;
-
-	hba->pm_op_in_progress = true;
-
-	/*
-	 * Call vendor specific resume callback. As these callbacks may access
-	 * vendor specific host controller register space call them when the
-	 * host clocks are ON.
-	 */
-	ret = ufshcd_vops_resume(hba, pm_op);
-	if (ret)
-		goto out;
-
-	/* For DeepSleep, the only supported option is to have the link off */
-	WARN_ON(ufshcd_is_ufs_dev_deepsleep(hba) && !ufshcd_is_link_off(hba));
-
-	if (ufshcd_is_link_hibern8(hba)) {
-		ret = ufshcd_uic_hibern8_exit(hba);
-		if (!ret) {
-			ufshcd_set_link_active(hba);
-		} else {
-			dev_err(hba->dev, "%s: hibern8 exit failed %d\n",
-					__func__, ret);
-			goto vendor_suspend;
-		}
-	} else if (ufshcd_is_link_off(hba)) {
-		/*
-		 * A full initialization of the host and the device is
-		 * required since the link was put to off during suspend.
-		 * Note, in the case of DeepSleep, the device will exit
-		 * DeepSleep due to device reset.
-		 */
-		ret = ufshcd_reset_and_restore(hba);
-		/*
-		 * ufshcd_reset_and_restore() should have already
-		 * set the link state as active
-		 */
-		if (ret || !ufshcd_is_link_active(hba))
-			goto vendor_suspend;
-	}
-
-	if (!ufshcd_is_ufs_dev_active(hba)) {
-		ret = ufshcd_set_dev_pwr_mode(hba, UFS_ACTIVE_PWR_MODE);
-		if (ret)
-			goto set_old_link_state;
-	}
-
-	if (ufshcd_keep_autobkops_enabled_except_suspend(hba))
-		ufshcd_enable_auto_bkops(hba);
-	else
-		/*
-		 * If BKOPs operations are urgently needed at this moment then
-		 * keep auto-bkops enabled or else disable it.
-		 */
-		ufshcd_urgent_bkops(hba);
-
-	if (hba->ee_usr_mask)
-		ufshcd_write_ee_control(hba);
-
-	if (ufshcd_is_clkscaling_supported(hba))
-		ufshcd_clk_scaling_suspend(hba, false);
-
-	if (hba->dev_info.b_rpm_dev_flush_capable) {
-		hba->dev_info.b_rpm_dev_flush_capable = false;
-		cancel_delayed_work(&hba->rpm_dev_flush_recheck_work);
-	}
-
-	/* Enable Auto-Hibernate if configured */
-	ufshcd_auto_hibern8_enable(hba);
-
-	ufshpb_resume(hba);
-	goto out;
-
-set_old_link_state:
-	ufshcd_link_state_transition(hba, old_link_state, 0);
-vendor_suspend:
-	ufshcd_vops_suspend(hba, pm_op, PRE_CHANGE);
-	ufshcd_vops_suspend(hba, pm_op, POST_CHANGE);
-out:
-	if (ret)
-		ufshcd_update_evt_hist(hba, UFS_EVT_WL_RES_ERR, (u32)ret);
-	hba->clk_gating.is_suspended = false;
-	ufshcd_release(hba);
-	hba->pm_op_in_progress = false;
-	return ret;
-}
-
-static int ufshcd_wl_runtime_suspend(struct device *dev)
-{
-	struct scsi_device *sdev = to_scsi_device(dev);
-	struct ufs_hba *hba;
-	int ret;
-	ktime_t start = ktime_get();
-
-	hba = shost_priv(sdev->host);
-
-	ret = __ufshcd_wl_suspend(hba, UFS_RUNTIME_PM);
-	if (ret)
-		dev_err(&sdev->sdev_gendev, "%s failed: %d\n", __func__, ret);
-
-	trace_ufshcd_wl_runtime_suspend(dev_name(dev), ret,
-		ktime_to_us(ktime_sub(ktime_get(), start)),
-		hba->curr_dev_pwr_mode, hba->uic_link_state);
-
-	return ret;
-}
-
-static int ufshcd_wl_runtime_resume(struct device *dev)
-{
-	struct scsi_device *sdev = to_scsi_device(dev);
-	struct ufs_hba *hba;
-	int ret = 0;
-	ktime_t start = ktime_get();
-
-	hba = shost_priv(sdev->host);
-
-	ret = __ufshcd_wl_resume(hba, UFS_RUNTIME_PM);
-	if (ret)
-		dev_err(&sdev->sdev_gendev, "%s failed: %d\n", __func__, ret);
-
-	trace_ufshcd_wl_runtime_resume(dev_name(dev), ret,
-		ktime_to_us(ktime_sub(ktime_get(), start)),
-		hba->curr_dev_pwr_mode, hba->uic_link_state);
-
-	return ret;
-}
-#endif
-
-#ifdef CONFIG_PM_SLEEP
-static int ufshcd_wl_suspend(struct device *dev)
-{
-	struct scsi_device *sdev = to_scsi_device(dev);
-	struct ufs_hba *hba;
-	int ret = 0;
-	ktime_t start = ktime_get();
-
-	hba = shost_priv(sdev->host);
-	down(&hba->host_sem);
-
-	if (pm_runtime_suspended(dev))
-		goto out;
-
-	ret = __ufshcd_wl_suspend(hba, UFS_SYSTEM_PM);
-	if (ret) {
-		dev_err(&sdev->sdev_gendev, "%s failed: %d\n", __func__,  ret);
-		up(&hba->host_sem);
-	}
-
-out:
-	if (!ret)
-		hba->is_sys_suspended = true;
-	trace_ufshcd_wl_suspend(dev_name(dev), ret,
-		ktime_to_us(ktime_sub(ktime_get(), start)),
-		hba->curr_dev_pwr_mode, hba->uic_link_state);
-
-	return ret;
-}
-
-static int ufshcd_wl_resume(struct device *dev)
-{
-	struct scsi_device *sdev = to_scsi_device(dev);
-	struct ufs_hba *hba;
-	int ret = 0;
-	ktime_t start = ktime_get();
-
-	hba = shost_priv(sdev->host);
-
-	if (pm_runtime_suspended(dev))
-		goto out;
-
-	ret = __ufshcd_wl_resume(hba, UFS_SYSTEM_PM);
-	if (ret)
-		dev_err(&sdev->sdev_gendev, "%s failed: %d\n", __func__, ret);
-out:
-	trace_ufshcd_wl_resume(dev_name(dev), ret,
-		ktime_to_us(ktime_sub(ktime_get(), start)),
-		hba->curr_dev_pwr_mode, hba->uic_link_state);
-	if (!ret)
-		hba->is_sys_suspended = false;
-	up(&hba->host_sem);
-	return ret;
-}
-#endif
-
-static void ufshcd_wl_shutdown(struct device *dev)
-{
-	struct scsi_device *sdev = to_scsi_device(dev);
-	struct ufs_hba *hba;
-
-	hba = shost_priv(sdev->host);
-
-	down(&hba->host_sem);
-	hba->shutting_down = true;
-	up(&hba->host_sem);
-
-	/* Turn on everything while shutting down */
-	ufshcd_rpm_get_sync(hba);
-	scsi_device_quiesce(sdev);
-	shost_for_each_device(sdev, hba->host) {
-		if (sdev == hba->ufs_device_wlun)
-			continue;
-		scsi_device_quiesce(sdev);
-	}
-	__ufshcd_wl_suspend(hba, UFS_SHUTDOWN_PM);
-}
-
-/**
- * ufshcd_suspend - helper function for suspend operations
- * @hba: per adapter instance
- *
- * This function will put disable irqs, turn off clocks
- * and set vreg and hba-vreg in lpm mode.
- */
-static int ufshcd_suspend(struct ufs_hba *hba)
-{
-	int ret;
-
-	if (!hba->is_powered)
-		return 0;
-	/*
-	 * Disable the host irq as host controller as there won't be any
-	 * host controller transaction expected till resume.
-	 */
-	ufshcd_disable_irq(hba);
-	ret = ufshcd_setup_clocks(hba, false);
-	if (ret) {
-		ufshcd_enable_irq(hba);
-		return ret;
-	}
-	if (ufshcd_is_clkgating_allowed(hba)) {
-		hba->clk_gating.state = CLKS_OFF;
-		trace_ufshcd_clk_gating(dev_name(hba->dev),
-					hba->clk_gating.state);
-	}
-
-	ufshcd_vreg_set_lpm(hba);
-	/* Put the host controller in low power mode if possible */
-	ufshcd_hba_vreg_set_lpm(hba);
-	return ret;
-}
-
-#ifdef CONFIG_PM
-/**
- * ufshcd_resume - helper function for resume operations
- * @hba: per adapter instance
- *
- * This function basically turns on the regulators, clocks and
- * irqs of the hba.
- *
- * Returns 0 for success and non-zero for failure
- */
-static int ufshcd_resume(struct ufs_hba *hba)
-{
-	int ret;
-
-	if (!hba->is_powered)
-		return 0;
-
-	ufshcd_hba_vreg_set_hpm(hba);
-	ret = ufshcd_vreg_set_hpm(hba);
-	if (ret)
-		goto out;
-
-	/* Make sure clocks are enabled before accessing controller */
-	ret = ufshcd_setup_clocks(hba, true);
-	if (ret)
-		goto disable_vreg;
-
-	/* enable the host irq as host controller would be active soon */
-	ufshcd_enable_irq(hba);
-	goto out;
-
-disable_vreg:
-	ufshcd_vreg_set_lpm(hba);
-out:
-	if (ret)
-		ufshcd_update_evt_hist(hba, UFS_EVT_RESUME_ERR, (u32)ret);
-	return ret;
-}
-#endif /* CONFIG_PM */
-
-#ifdef CONFIG_PM_SLEEP
-/**
- * ufshcd_system_suspend - system suspend callback
- * @dev: Device associated with the UFS controller.
- *
- * Executed before putting the system into a sleep state in which the contents
- * of main memory are preserved.
- *
- * Returns 0 for success and non-zero for failure
- */
-int ufshcd_system_suspend(struct device *dev)
-{
-	struct ufs_hba *hba = dev_get_drvdata(dev);
-	int ret = 0;
-	ktime_t start = ktime_get();
-
-	if (pm_runtime_suspended(hba->dev))
-		goto out;
-
-	ret = ufshcd_suspend(hba);
-out:
-	trace_ufshcd_system_suspend(dev_name(hba->dev), ret,
-		ktime_to_us(ktime_sub(ktime_get(), start)),
-		hba->curr_dev_pwr_mode, hba->uic_link_state);
-	return ret;
-}
-EXPORT_SYMBOL(ufshcd_system_suspend);
-
-/**
- * ufshcd_system_resume - system resume callback
- * @dev: Device associated with the UFS controller.
- *
- * Executed after waking the system up from a sleep state in which the contents
- * of main memory were preserved.
- *
- * Returns 0 for success and non-zero for failure
- */
-int ufshcd_system_resume(struct device *dev)
-{
-	struct ufs_hba *hba = dev_get_drvdata(dev);
-	ktime_t start = ktime_get();
-	int ret = 0;
-
-	if (pm_runtime_suspended(hba->dev))
-		goto out;
-
-	ret = ufshcd_resume(hba);
-
-out:
-	trace_ufshcd_system_resume(dev_name(hba->dev), ret,
-		ktime_to_us(ktime_sub(ktime_get(), start)),
-		hba->curr_dev_pwr_mode, hba->uic_link_state);
-
-	return ret;
-}
-EXPORT_SYMBOL(ufshcd_system_resume);
-#endif /* CONFIG_PM_SLEEP */
-
-#ifdef CONFIG_PM
-/**
- * ufshcd_runtime_suspend - runtime suspend callback
- * @dev: Device associated with the UFS controller.
- *
- * Check the description of ufshcd_suspend() function for more details.
- *
- * Returns 0 for success and non-zero for failure
- */
-int ufshcd_runtime_suspend(struct device *dev)
-{
-	struct ufs_hba *hba = dev_get_drvdata(dev);
-	int ret;
-	ktime_t start = ktime_get();
-
-	ret = ufshcd_suspend(hba);
-
-	trace_ufshcd_runtime_suspend(dev_name(hba->dev), ret,
-		ktime_to_us(ktime_sub(ktime_get(), start)),
-		hba->curr_dev_pwr_mode, hba->uic_link_state);
-	return ret;
-}
-EXPORT_SYMBOL(ufshcd_runtime_suspend);
-
-/**
- * ufshcd_runtime_resume - runtime resume routine
- * @dev: Device associated with the UFS controller.
- *
- * This function basically brings controller
- * to active state. Following operations are done in this function:
- *
- * 1. Turn on all the controller related clocks
- * 2. Turn ON VCC rail
- */
-int ufshcd_runtime_resume(struct device *dev)
-{
-	struct ufs_hba *hba = dev_get_drvdata(dev);
-	int ret;
-	ktime_t start = ktime_get();
-
-	ret = ufshcd_resume(hba);
-
-	trace_ufshcd_runtime_resume(dev_name(hba->dev), ret,
-		ktime_to_us(ktime_sub(ktime_get(), start)),
-		hba->curr_dev_pwr_mode, hba->uic_link_state);
-	return ret;
-}
-EXPORT_SYMBOL(ufshcd_runtime_resume);
-#endif /* CONFIG_PM */
-
-/**
- * ufshcd_shutdown - shutdown routine
- * @hba: per adapter instance
- *
- * This function would turn off both UFS device and UFS hba
- * regulators. It would also disable clocks.
- *
- * Returns 0 always to allow force shutdown even in case of errors.
- */
-int ufshcd_shutdown(struct ufs_hba *hba)
-{
-	if (ufshcd_is_ufs_dev_poweroff(hba) && ufshcd_is_link_off(hba))
-		goto out;
-
-	pm_runtime_get_sync(hba->dev);
-
-	ufshcd_suspend(hba);
-out:
-	hba->is_powered = false;
-	/* allow force shutdown even in case of errors */
-	return 0;
-}
-EXPORT_SYMBOL(ufshcd_shutdown);
-
-/**
- * ufshcd_remove - de-allocate SCSI host and host memory space
- *		data structure memory
- * @hba: per adapter instance
- */
-void ufshcd_remove(struct ufs_hba *hba)
-{
-	if (hba->ufs_device_wlun)
-		ufshcd_rpm_get_sync(hba);
-	ufs_hwmon_remove(hba);
-	ufs_bsg_remove(hba);
-	ufshpb_remove(hba);
-	ufs_sysfs_remove_nodes(hba->dev);
-	blk_cleanup_queue(hba->tmf_queue);
-	blk_mq_free_tag_set(&hba->tmf_tag_set);
-	scsi_remove_host(hba->host);
-	/* disable interrupts */
-	ufshcd_disable_intr(hba, hba->intr_mask);
-	ufshcd_hba_stop(hba);
-	ufshcd_hba_exit(hba);
-}
-EXPORT_SYMBOL_GPL(ufshcd_remove);
-
-/**
- * ufshcd_dealloc_host - deallocate Host Bus Adapter (HBA)
- * @hba: pointer to Host Bus Adapter (HBA)
- */
-void ufshcd_dealloc_host(struct ufs_hba *hba)
-{
-	scsi_host_put(hba->host);
-}
-EXPORT_SYMBOL_GPL(ufshcd_dealloc_host);
-
-/**
- * ufshcd_set_dma_mask - Set dma mask based on the controller
- *			 addressing capability
- * @hba: per adapter instance
- *
- * Returns 0 for success, non-zero for failure
- */
-static int ufshcd_set_dma_mask(struct ufs_hba *hba)
-{
-	if (hba->capabilities & MASK_64_ADDRESSING_SUPPORT) {
-		if (!dma_set_mask_and_coherent(hba->dev, DMA_BIT_MASK(64)))
-			return 0;
-	}
-	return dma_set_mask_and_coherent(hba->dev, DMA_BIT_MASK(32));
-}
-
-/**
- * ufshcd_alloc_host - allocate Host Bus Adapter (HBA)
- * @dev: pointer to device handle
- * @hba_handle: driver private handle
- * Returns 0 on success, non-zero value on failure
- */
-int ufshcd_alloc_host(struct device *dev, struct ufs_hba **hba_handle)
-{
-	struct Scsi_Host *host;
-	struct ufs_hba *hba;
-	int err = 0;
-
-	if (!dev) {
-		dev_err(dev,
-		"Invalid memory reference for dev is NULL\n");
-		err = -ENODEV;
-		goto out_error;
-	}
-
-	host = scsi_host_alloc(&ufshcd_driver_template,
-				sizeof(struct ufs_hba));
-	if (!host) {
-		dev_err(dev, "scsi_host_alloc failed\n");
-		err = -ENOMEM;
-		goto out_error;
-	}
-	host->nr_maps = HCTX_TYPE_POLL + 1;
-	hba = shost_priv(host);
-	hba->host = host;
-	hba->dev = dev;
-	hba->dev_ref_clk_freq = REF_CLK_FREQ_INVAL;
-	hba->nop_out_timeout = NOP_OUT_TIMEOUT;
-	INIT_LIST_HEAD(&hba->clk_list_head);
-	spin_lock_init(&hba->outstanding_lock);
-
-	*hba_handle = hba;
-
-out_error:
-	return err;
-}
-EXPORT_SYMBOL(ufshcd_alloc_host);
-
-/* This function exists because blk_mq_alloc_tag_set() requires this. */
-static blk_status_t ufshcd_queue_tmf(struct blk_mq_hw_ctx *hctx,
-				     const struct blk_mq_queue_data *qd)
-{
-	WARN_ON_ONCE(true);
-	return BLK_STS_NOTSUPP;
-}
-
-static const struct blk_mq_ops ufshcd_tmf_ops = {
-	.queue_rq = ufshcd_queue_tmf,
-};
-
-/**
- * ufshcd_init - Driver initialization routine
- * @hba: per-adapter instance
- * @mmio_base: base register address
- * @irq: Interrupt line of device
- * Returns 0 on success, non-zero value on failure
- */
-int ufshcd_init(struct ufs_hba *hba, void __iomem *mmio_base, unsigned int irq)
-{
-	int err;
-	struct Scsi_Host *host = hba->host;
-	struct device *dev = hba->dev;
-	char eh_wq_name[sizeof("ufs_eh_wq_00")];
-
-	/*
-	 * dev_set_drvdata() must be called before any callbacks are registered
-	 * that use dev_get_drvdata() (frequency scaling, clock scaling, hwmon,
-	 * sysfs).
-	 */
-	dev_set_drvdata(dev, hba);
-
-	if (!mmio_base) {
-		dev_err(hba->dev,
-		"Invalid memory reference for mmio_base is NULL\n");
-		err = -ENODEV;
-		goto out_error;
-	}
-
-	hba->mmio_base = mmio_base;
-	hba->irq = irq;
-	hba->vps = &ufs_hba_vps;
-
-	err = ufshcd_hba_init(hba);
-	if (err)
-		goto out_error;
-
-	/* Read capabilities registers */
-	err = ufshcd_hba_capabilities(hba);
-	if (err)
-		goto out_disable;
-
-	/* Get UFS version supported by the controller */
-	hba->ufs_version = ufshcd_get_ufs_version(hba);
-
-	/* Get Interrupt bit mask per version */
-	hba->intr_mask = ufshcd_get_intr_mask(hba);
-
-	err = ufshcd_set_dma_mask(hba);
-	if (err) {
-		dev_err(hba->dev, "set dma mask failed\n");
-		goto out_disable;
-	}
-
-	/* Allocate memory for host memory space */
-	err = ufshcd_memory_alloc(hba);
-	if (err) {
-		dev_err(hba->dev, "Memory allocation failed\n");
-		goto out_disable;
-	}
-
-	/* Configure LRB */
-	ufshcd_host_memory_configure(hba);
-
-	host->can_queue = hba->nutrs - UFSHCD_NUM_RESERVED;
-	host->cmd_per_lun = hba->nutrs - UFSHCD_NUM_RESERVED;
-	host->max_id = UFSHCD_MAX_ID;
-	host->max_lun = UFS_MAX_LUNS;
-	host->max_channel = UFSHCD_MAX_CHANNEL;
-	host->unique_id = host->host_no;
-	host->max_cmd_len = UFS_CDB_SIZE;
-
-	hba->max_pwr_info.is_valid = false;
-
-	/* Initialize work queues */
-	snprintf(eh_wq_name, sizeof(eh_wq_name), "ufs_eh_wq_%d",
-		 hba->host->host_no);
-	hba->eh_wq = create_singlethread_workqueue(eh_wq_name);
-	if (!hba->eh_wq) {
-		dev_err(hba->dev, "%s: failed to create eh workqueue\n",
-			__func__);
-		err = -ENOMEM;
-		goto out_disable;
-	}
-	INIT_WORK(&hba->eh_work, ufshcd_err_handler);
-	INIT_WORK(&hba->eeh_work, ufshcd_exception_event_handler);
-
-	sema_init(&hba->host_sem, 1);
-
-	/* Initialize UIC command mutex */
-	mutex_init(&hba->uic_cmd_mutex);
-
-	/* Initialize mutex for device management commands */
-	mutex_init(&hba->dev_cmd.lock);
-
-	/* Initialize mutex for exception event control */
-	mutex_init(&hba->ee_ctrl_mutex);
-
-	init_rwsem(&hba->clk_scaling_lock);
-
-	ufshcd_init_clk_gating(hba);
-
-	ufshcd_init_clk_scaling(hba);
-
-	/*
-	 * In order to avoid any spurious interrupt immediately after
-	 * registering UFS controller interrupt handler, clear any pending UFS
-	 * interrupt status and disable all the UFS interrupts.
-	 */
-	ufshcd_writel(hba, ufshcd_readl(hba, REG_INTERRUPT_STATUS),
-		      REG_INTERRUPT_STATUS);
-	ufshcd_writel(hba, 0, REG_INTERRUPT_ENABLE);
-	/*
-	 * Make sure that UFS interrupts are disabled and any pending interrupt
-	 * status is cleared before registering UFS interrupt handler.
-	 */
-	mb();
-
-	/* IRQ registration */
-	err = devm_request_irq(dev, irq, ufshcd_intr, IRQF_SHARED, UFSHCD, hba);
-	if (err) {
-		dev_err(hba->dev, "request irq failed\n");
-		goto out_disable;
-	} else {
-		hba->is_irq_enabled = true;
-	}
-
-	err = scsi_add_host(host, hba->dev);
-	if (err) {
-		dev_err(hba->dev, "scsi_add_host failed\n");
-		goto out_disable;
-	}
-
-	hba->tmf_tag_set = (struct blk_mq_tag_set) {
-		.nr_hw_queues	= 1,
-		.queue_depth	= hba->nutmrs,
-		.ops		= &ufshcd_tmf_ops,
-		.flags		= BLK_MQ_F_NO_SCHED,
-	};
-	err = blk_mq_alloc_tag_set(&hba->tmf_tag_set);
-	if (err < 0)
-		goto out_remove_scsi_host;
-	hba->tmf_queue = blk_mq_init_queue(&hba->tmf_tag_set);
-	if (IS_ERR(hba->tmf_queue)) {
-		err = PTR_ERR(hba->tmf_queue);
-		goto free_tmf_tag_set;
-	}
-	hba->tmf_rqs = devm_kcalloc(hba->dev, hba->nutmrs,
-				    sizeof(*hba->tmf_rqs), GFP_KERNEL);
-	if (!hba->tmf_rqs) {
-		err = -ENOMEM;
-		goto free_tmf_queue;
-	}
-
-	/* Reset the attached device */
-	ufshcd_device_reset(hba);
-
-	ufshcd_init_crypto(hba);
-
-	/* Host controller enable */
-	err = ufshcd_hba_enable(hba);
-	if (err) {
-		dev_err(hba->dev, "Host controller enable failed\n");
-		ufshcd_print_evt_hist(hba);
-		ufshcd_print_host_state(hba);
-		goto free_tmf_queue;
-	}
-
-	/*
-	 * Set the default power management level for runtime and system PM.
-	 * Default power saving mode is to keep UFS link in Hibern8 state
-	 * and UFS device in sleep state.
-	 */
-	hba->rpm_lvl = ufs_get_desired_pm_lvl_for_dev_link_state(
-						UFS_SLEEP_PWR_MODE,
-						UIC_LINK_HIBERN8_STATE);
-	hba->spm_lvl = ufs_get_desired_pm_lvl_for_dev_link_state(
-						UFS_SLEEP_PWR_MODE,
-						UIC_LINK_HIBERN8_STATE);
-
-	INIT_DELAYED_WORK(&hba->rpm_dev_flush_recheck_work,
-			  ufshcd_rpm_dev_flush_recheck_work);
-
-	/* Set the default auto-hiberate idle timer value to 150 ms */
-	if (ufshcd_is_auto_hibern8_supported(hba) && !hba->ahit) {
-		hba->ahit = FIELD_PREP(UFSHCI_AHIBERN8_TIMER_MASK, 150) |
-			    FIELD_PREP(UFSHCI_AHIBERN8_SCALE_MASK, 3);
-	}
-
-	/* Hold auto suspend until async scan completes */
-	pm_runtime_get_sync(dev);
-	atomic_set(&hba->scsi_block_reqs_cnt, 0);
-	/*
-	 * We are assuming that device wasn't put in sleep/power-down
-	 * state exclusively during the boot stage before kernel.
-	 * This assumption helps avoid doing link startup twice during
-	 * ufshcd_probe_hba().
-	 */
-	ufshcd_set_ufs_dev_active(hba);
-
-	async_schedule(ufshcd_async_scan, hba);
-	ufs_sysfs_add_nodes(hba->dev);
-
-	device_enable_async_suspend(dev);
-	return 0;
-
-free_tmf_queue:
-	blk_cleanup_queue(hba->tmf_queue);
-free_tmf_tag_set:
-	blk_mq_free_tag_set(&hba->tmf_tag_set);
-out_remove_scsi_host:
-	scsi_remove_host(hba->host);
-out_disable:
-	hba->is_irq_enabled = false;
-	ufshcd_hba_exit(hba);
-out_error:
-	return err;
-}
-EXPORT_SYMBOL_GPL(ufshcd_init);
-
-void ufshcd_resume_complete(struct device *dev)
-{
-	struct ufs_hba *hba = dev_get_drvdata(dev);
-
-	if (hba->complete_put) {
-		ufshcd_rpm_put(hba);
-		hba->complete_put = false;
-	}
-}
-EXPORT_SYMBOL_GPL(ufshcd_resume_complete);
-
-static bool ufshcd_rpm_ok_for_spm(struct ufs_hba *hba)
-{
-	struct device *dev = &hba->ufs_device_wlun->sdev_gendev;
-	enum ufs_dev_pwr_mode dev_pwr_mode;
-	enum uic_link_state link_state;
-	unsigned long flags;
-	bool res;
-
-	spin_lock_irqsave(&dev->power.lock, flags);
-	dev_pwr_mode = ufs_get_pm_lvl_to_dev_pwr_mode(hba->spm_lvl);
-	link_state = ufs_get_pm_lvl_to_link_pwr_state(hba->spm_lvl);
-	res = pm_runtime_suspended(dev) &&
-	      hba->curr_dev_pwr_mode == dev_pwr_mode &&
-	      hba->uic_link_state == link_state &&
-	      !hba->dev_info.b_rpm_dev_flush_capable;
-	spin_unlock_irqrestore(&dev->power.lock, flags);
-
-	return res;
-}
-
-int __ufshcd_suspend_prepare(struct device *dev, bool rpm_ok_for_spm)
-{
-	struct ufs_hba *hba = dev_get_drvdata(dev);
-	int ret;
-
-	/*
-	 * SCSI assumes that runtime-pm and system-pm for scsi drivers
-	 * are same. And it doesn't wake up the device for system-suspend
-	 * if it's runtime suspended. But ufs doesn't follow that.
-	 * Refer ufshcd_resume_complete()
-	 */
-	if (hba->ufs_device_wlun) {
-		/* Prevent runtime suspend */
-		ufshcd_rpm_get_noresume(hba);
-		/*
-		 * Check if already runtime suspended in same state as system
-		 * suspend would be.
-		 */
-		if (!rpm_ok_for_spm || !ufshcd_rpm_ok_for_spm(hba)) {
-			/* RPM state is not ok for SPM, so runtime resume */
-			ret = ufshcd_rpm_resume(hba);
-			if (ret < 0 && ret != -EACCES) {
-				ufshcd_rpm_put(hba);
-				return ret;
-			}
-		}
-		hba->complete_put = true;
-	}
-	return 0;
-}
-EXPORT_SYMBOL_GPL(__ufshcd_suspend_prepare);
-
-int ufshcd_suspend_prepare(struct device *dev)
-{
-	return __ufshcd_suspend_prepare(dev, true);
-}
-EXPORT_SYMBOL_GPL(ufshcd_suspend_prepare);
-
-#ifdef CONFIG_PM_SLEEP
-static int ufshcd_wl_poweroff(struct device *dev)
-{
-	struct scsi_device *sdev = to_scsi_device(dev);
-	struct ufs_hba *hba = shost_priv(sdev->host);
-
-	__ufshcd_wl_suspend(hba, UFS_SHUTDOWN_PM);
-	return 0;
-}
-#endif
-
-static int ufshcd_wl_probe(struct device *dev)
-{
-	struct scsi_device *sdev = to_scsi_device(dev);
-
-	if (!is_device_wlun(sdev))
-		return -ENODEV;
-
-	blk_pm_runtime_init(sdev->request_queue, dev);
-	pm_runtime_set_autosuspend_delay(dev, 0);
-	pm_runtime_allow(dev);
-
-	return  0;
-}
-
-static int ufshcd_wl_remove(struct device *dev)
-{
-	pm_runtime_forbid(dev);
-	return 0;
-}
-
-static const struct dev_pm_ops ufshcd_wl_pm_ops = {
-#ifdef CONFIG_PM_SLEEP
-	.suspend = ufshcd_wl_suspend,
-	.resume = ufshcd_wl_resume,
-	.freeze = ufshcd_wl_suspend,
-	.thaw = ufshcd_wl_resume,
-	.poweroff = ufshcd_wl_poweroff,
-	.restore = ufshcd_wl_resume,
-#endif
-	SET_RUNTIME_PM_OPS(ufshcd_wl_runtime_suspend, ufshcd_wl_runtime_resume, NULL)
-};
-
-/*
- * ufs_dev_wlun_template - describes ufs device wlun
- * ufs-device wlun - used to send pm commands
- * All luns are consumers of ufs-device wlun.
- *
- * Currently, no sd driver is present for wluns.
- * Hence the no specific pm operations are performed.
- * With ufs design, SSU should be sent to ufs-device wlun.
- * Hence register a scsi driver for ufs wluns only.
- */
-static struct scsi_driver ufs_dev_wlun_template = {
-	.gendrv = {
-		.name = "ufs_device_wlun",
-		.owner = THIS_MODULE,
-		.probe = ufshcd_wl_probe,
-		.remove = ufshcd_wl_remove,
-		.pm = &ufshcd_wl_pm_ops,
-		.shutdown = ufshcd_wl_shutdown,
-	},
-};
-
-static int __init ufshcd_core_init(void)
-{
-	int ret;
-
-	/* Verify that there are no gaps in struct utp_transfer_cmd_desc. */
-	static_assert(sizeof(struct utp_transfer_cmd_desc) ==
-		      2 * ALIGNED_UPIU_SIZE +
-			      SG_ALL * sizeof(struct ufshcd_sg_entry));
-
-	ufs_debugfs_init();
-
-	ret = scsi_register_driver(&ufs_dev_wlun_template.gendrv);
-	if (ret)
-		ufs_debugfs_exit();
-	return ret;
-}
-
-static void __exit ufshcd_core_exit(void)
-{
-	ufs_debugfs_exit();
-	scsi_unregister_driver(&ufs_dev_wlun_template.gendrv);
-}
-
-module_init(ufshcd_core_init);
-module_exit(ufshcd_core_exit);
-
-MODULE_AUTHOR("Santosh Yaragnavi <santosh.sy@samsung.com>");
-MODULE_AUTHOR("Vinayak Holikatti <h.vinayak@samsung.com>");
-MODULE_DESCRIPTION("Generic UFS host controller driver Core");
-MODULE_LICENSE("GPL");