From 2f81b47135a971a22ccad9f3cc8c68a583b93ea4 Mon Sep 17 00:00:00 2001
From: "John W. Linville" <linville@tuxdriver.com>
Date: Wed, 11 Aug 2010 16:11:00 -0400
Subject: ipw2100: register pm_qos request before registering pci driver

It is necessary to call pm_qos_add_request prior to calling
pm_qos_update_request.  It was revealed that ipw2100 has been
doing this wrong since "pm_qos: Get rid of the allocation in
pm_qos_add_request()" (commit 82f682514a5df89ffb3890627eebf0897b7a84ec)
added a WARN that results in the following backtrace:

WARNING: at kernel/pm_qos_params.c:264 pm_qos_update_request+0x5e/0x70()
pm_qos_update_request() called for unknown object
Call Trace:
[<c1024088>] ? warn_slowpath_common+0x78/0xb0
[<c1041c9e>] ? pm_qos_update_request+0x5e/0x70
[<c1041c9e>] ? pm_qos_update_request+0x5e/0x70
[<c1024153>] ? warn_slowpath_fmt+0x33/0x40
[<c1041c9e>] ? pm_qos_update_request+0x5e/0x70
[<f89fe15f>] ? ipw2100_up+0x3f/0xf10 [ipw2100]
[<c11961c9>] ? vsnprintf+0xc9/0x530
[<f89ff36c>] ? ipw2100_net_init+0x2c/0x1c0 [ipw2100]
[<c12f542d>] ? register_netdevice+0x7d/0x3c0
[<f89f9b00>] ? ipw2100_irq_tasklet+0x910/0x9a0 [ipw2100]
[<c12f579f>] ? register_netdev+0x2f/0x40
[<f89fd471>] ? ipw2100_pci_init_one+0xd21/0x1060 [ipw2100]
[<c11a5ebb>] ? local_pci_probe+0xb/0x10
[<c11a6d49>] ? pci_device_probe+0x69/0x90
[<c1224704>] ? driver_probe_device+0x74/0x180
[<c10dd15a>] ? sysfs_create_dir+0x6a/0xb0
[<c1224889>] ? __driver_attach+0x79/0x80
[<c1224810>] ? __driver_attach+0x0/0x80
[<c1223fa2>] ? bus_for_each_dev+0x52/0x80
[<c1224586>] ? driver_attach+0x16/0x20
[<c1224810>] ? __driver_attach+0x0/0x80
[<c122395f>] ? bus_add_driver+0x17f/0x250
[<c11a5ec0>] ? pci_device_shutdown+0x0/0x20
[<c11a6c80>] ? pci_device_remove+0x0/0x40
[<c1224b13>] ? driver_register+0x63/0x120
[<c11a6f96>] ? __pci_register_driver+0x36/0xa0
[<f84f9048>] ? ipw2100_init+0x48/0x67 [ipw2100]
[<c1001122>] ? do_one_initcall+0x32/0x170
[<c1087078>] ? __vunmap+0xb8/0xf0
[<f84f9000>] ? ipw2100_init+0x0/0x67 [ipw2100]
[<c10510c1>] ? sys_init_module+0x161/0x1000
[<c108f847>] ? sys_close+0x67/0xe0
[<c13647c1>] ? syscall_call+0x7/0xb

This patch moves pm_qos_add_request prior to pci_register_driver in
ipw2100 in order to avoid this problem.

Reported-by: Christoph Fritz <chf.fritz@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---
 drivers/net/wireless/ipw2x00/ipw2100.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

(limited to 'drivers')

diff --git a/drivers/net/wireless/ipw2x00/ipw2100.c b/drivers/net/wireless/ipw2x00/ipw2100.c
index 16bbfa3189a5..1189dbb6e2a6 100644
--- a/drivers/net/wireless/ipw2x00/ipw2100.c
+++ b/drivers/net/wireless/ipw2x00/ipw2100.c
@@ -6665,12 +6665,13 @@ static int __init ipw2100_init(void)
 	printk(KERN_INFO DRV_NAME ": %s, %s\n", DRV_DESCRIPTION, DRV_VERSION);
 	printk(KERN_INFO DRV_NAME ": %s\n", DRV_COPYRIGHT);
 
+	pm_qos_add_request(&ipw2100_pm_qos_req, PM_QOS_CPU_DMA_LATENCY,
+			   PM_QOS_DEFAULT_VALUE);
+
 	ret = pci_register_driver(&ipw2100_pci_driver);
 	if (ret)
 		goto out;
 
-	pm_qos_add_request(&ipw2100_pm_qos_req, PM_QOS_CPU_DMA_LATENCY,
-			   PM_QOS_DEFAULT_VALUE);
 #ifdef CONFIG_IPW2100_DEBUG
 	ipw2100_debug_level = debug;
 	ret = driver_create_file(&ipw2100_pci_driver.driver,
-- 
cgit v1.2.3-70-g09d2


From da93f10684bfba2983a70c10b5d417232b6a5245 Mon Sep 17 00:00:00 2001
From: Rajkumar Manoharan <rmanoharan@atheros.com>
Date: Wed, 11 Aug 2010 20:27:43 +0530
Subject: ath9k_htc: fix panic on packet injection using airbase-ng tool.

This should fix the oops which occurs during the packet injection
on monitor interface.

EIP is at ath9k_htc_tx_start+0x69/0x220 [ath9k_htc]
 [<f84dc8ea>] ? invoke_tx_handlers+0xa5a/0xee0 [mac80211]
 [<f82c84f4>] ? ath9k_htc_tx+0x44/0xe0 [ath9k_htc]
 [<f84db7b8>] ? __ieee80211_tx+0xf8/0x190 [mac80211]
 [<f84dce0d>] ? ieee80211_tx+0x9d/0x1a0 [mac80211]
 [<f84dcfac>] ? ieee80211_xmit+0x9c/0x1c0 [mac80211]
 [<f84dd1b5>] ? ieee80211_monitor_start_xmit+0x85/0xb0 [mac80211]
 [<c04c30cd>] ? dev_hard_start_xmit+0x1ad/0x210
 [<c04b97c2>] ? __alloc_skb+0x52/0x130
 [<c04d7cd5>] ? sch_direct_xmit+0x105/0x170
 [<c04c5e9f>] ? dev_queue_xmit+0x37f/0x4b0
 [<c0567e1e>] ? packet_snd+0x21e/0x250
 [<c05684a2>] ? packet_sendmsg+0x32/0x40
 [<c04b4c63>] ? sock_aio_write+0x113/0x130
 [<c0207934>] ? do_sync_write+0xc4/0x100
 [<c0167740>] ? autoremove_wake_function+0x0/0x50
 [<c02f4414>] ? security_file_permission+0x14/0x20
 [<c0207ad4>] ? rw_verify_area+0x64/0xe0
 [<c01e6458>] ? handle_mm_fault+0x338/0x390
 [<c0207cd5>] ? vfs_write+0x185/0x1a0
 [<c058db20>] ? do_page_fault+0x160/0x3a0
 [<c0208512>] ? sys_write+0x42/0x70
 [<c01033ec>] ? syscall_call+0x7/0xb

Signed-off-by: Rajkumar Manoharan <rmanoharan@atheros.com>
Cc: stable@kernel.org
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---
 drivers/net/wireless/ath/ath9k/htc_drv_txrx.c | 15 ++++++++++-----
 1 file changed, 10 insertions(+), 5 deletions(-)

(limited to 'drivers')

diff --git a/drivers/net/wireless/ath/ath9k/htc_drv_txrx.c b/drivers/net/wireless/ath/ath9k/htc_drv_txrx.c
index bd0b4acc3ece..2a6e45a293a9 100644
--- a/drivers/net/wireless/ath/ath9k/htc_drv_txrx.c
+++ b/drivers/net/wireless/ath/ath9k/htc_drv_txrx.c
@@ -78,18 +78,23 @@ int ath9k_htc_tx_start(struct ath9k_htc_priv *priv, struct sk_buff *skb)
 	struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
 	struct ieee80211_sta *sta = tx_info->control.sta;
 	struct ath9k_htc_sta *ista;
-	struct ath9k_htc_vif *avp;
 	struct ath9k_htc_tx_ctl tx_ctl;
 	enum htc_endpoint_id epid;
 	u16 qnum;
 	__le16 fc;
 	u8 *tx_fhdr;
-	u8 sta_idx;
+	u8 sta_idx, vif_idx;
 
 	hdr = (struct ieee80211_hdr *) skb->data;
 	fc = hdr->frame_control;
 
-	avp = (struct ath9k_htc_vif *) tx_info->control.vif->drv_priv;
+	if (tx_info->control.vif &&
+			(struct ath9k_htc_vif *) tx_info->control.vif->drv_priv)
+		vif_idx = ((struct ath9k_htc_vif *)
+				tx_info->control.vif->drv_priv)->index;
+	else
+		vif_idx = priv->nvifs;
+
 	if (sta) {
 		ista = (struct ath9k_htc_sta *) sta->drv_priv;
 		sta_idx = ista->index;
@@ -106,7 +111,7 @@ int ath9k_htc_tx_start(struct ath9k_htc_priv *priv, struct sk_buff *skb)
 		memset(&tx_hdr, 0, sizeof(struct tx_frame_hdr));
 
 		tx_hdr.node_idx = sta_idx;
-		tx_hdr.vif_idx = avp->index;
+		tx_hdr.vif_idx = vif_idx;
 
 		if (tx_info->flags & IEEE80211_TX_CTL_AMPDU) {
 			tx_ctl.type = ATH9K_HTC_AMPDU;
@@ -169,7 +174,7 @@ int ath9k_htc_tx_start(struct ath9k_htc_priv *priv, struct sk_buff *skb)
 		tx_ctl.type = ATH9K_HTC_NORMAL;
 
 		mgmt_hdr.node_idx = sta_idx;
-		mgmt_hdr.vif_idx = avp->index;
+		mgmt_hdr.vif_idx = vif_idx;
 		mgmt_hdr.tidno = 0;
 		mgmt_hdr.flags = 0;
 
-- 
cgit v1.2.3-70-g09d2


From 71ba186c123630ddab17667ec9ecf7e2ef211295 Mon Sep 17 00:00:00 2001
From: Vivek Natarajan <vnatarajan@atheros.com>
Date: Thu, 12 Aug 2010 14:23:28 +0530
Subject: ath9k_htc: Fix disconnect issue in HT40 mode.

Some APs advertise that they may be HT40 capable in the capabilites
but the current operating channel configuration may be only HT20.
This causes disconnection as ath9k_htc sets WLAN_RC_40_FLAG despite
the AP operating in HT20 mode.
Hence set this flag only if the current channel configuration
is HT40 enabled.

Cc: stable@kernel.org
Signed-off-by: Vivek Natarajan <vnatarajan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---
 drivers/net/wireless/ath/ath9k/htc_drv_main.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'drivers')

diff --git a/drivers/net/wireless/ath/ath9k/htc_drv_main.c b/drivers/net/wireless/ath/ath9k/htc_drv_main.c
index ebed9d1691a5..7d09b4b17bbd 100644
--- a/drivers/net/wireless/ath/ath9k/htc_drv_main.c
+++ b/drivers/net/wireless/ath/ath9k/htc_drv_main.c
@@ -366,7 +366,8 @@ static void ath9k_htc_setup_rate(struct ath9k_htc_priv *priv,
 		caps = WLAN_RC_HT_FLAG;
 		if (sta->ht_cap.mcs.rx_mask[1])
 			caps |= WLAN_RC_DS_FLAG;
-		if (sta->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40)
+		if ((sta->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) &&
+		     (conf_is_ht40(&priv->hw->conf)))
 			caps |= WLAN_RC_40_FLAG;
 		if (conf_is_ht40(&priv->hw->conf) &&
 		    (sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_40))
-- 
cgit v1.2.3-70-g09d2


From fe0dbcc9d2e941328b3269dab102b94ad697ade5 Mon Sep 17 00:00:00 2001
From: Yuri Kululin <ext-yuri.kululin@nokia.com>
Date: Fri, 13 Aug 2010 13:46:12 +0400
Subject: wl1251: fix trigger scan timeout usage

Use appropriate command (CMD_TRIGGER_SCAN_TO) instead of scan command
(CMD_SCAN) to configure trigger scan timeout.

This was broken in commit 3a98c30f3e8bb1f32b5bcb74a39647b3670de275.

This fix address the bug reported here:

https://bugzilla.kernel.org/show_bug.cgi?id=16554

Cc: stable@kernel.org
Signed-off-by: Yuri Ershov <ext-yuri.ershov@nokia.com>
Signed-off-by: Yuri Kululin <ext-yuri.kululin@nokia.com>
Acked-by: Kalle Valo <kvalo@adurom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---
 drivers/net/wireless/wl12xx/wl1251_cmd.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'drivers')

diff --git a/drivers/net/wireless/wl12xx/wl1251_cmd.c b/drivers/net/wireless/wl12xx/wl1251_cmd.c
index a37b30cef489..ce3722f4c3e3 100644
--- a/drivers/net/wireless/wl12xx/wl1251_cmd.c
+++ b/drivers/net/wireless/wl12xx/wl1251_cmd.c
@@ -484,7 +484,7 @@ int wl1251_cmd_trigger_scan_to(struct wl1251 *wl, u32 timeout)
 
 	cmd->timeout = timeout;
 
-	ret = wl1251_cmd_send(wl, CMD_SCAN, cmd, sizeof(*cmd));
+	ret = wl1251_cmd_send(wl, CMD_TRIGGER_SCAN_TO, cmd, sizeof(*cmd));
 	if (ret < 0) {
 		wl1251_error("cmd trigger scan to failed: %d", ret);
 		goto out;
-- 
cgit v1.2.3-70-g09d2


From ca6cff1f80f30cc6313a943339361ad6f9e76548 Mon Sep 17 00:00:00 2001
From: Rajkumar Manoharan <rmanoharan@atheros.com>
Date: Fri, 13 Aug 2010 18:36:40 +0530
Subject: ath9k_htc: load proper firmware for device ID 7015

This patch handles the firmware loading properly
for device ID 7015.

Signed-off-by: Rajkumar Manoharan <rmanoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---
 drivers/net/wireless/ath/ath9k/eeprom.h       | 1 +
 drivers/net/wireless/ath/ath9k/eeprom_9287.c  | 7 ++++++-
 drivers/net/wireless/ath/ath9k/hif_usb.c      | 8 ++------
 drivers/net/wireless/ath/ath9k/htc_drv_init.c | 1 +
 drivers/net/wireless/ath/ath9k/reg.h          | 1 +
 5 files changed, 11 insertions(+), 7 deletions(-)

(limited to 'drivers')

diff --git a/drivers/net/wireless/ath/ath9k/eeprom.h b/drivers/net/wireless/ath/ath9k/eeprom.h
index 8750c558c221..7f48df1e2903 100644
--- a/drivers/net/wireless/ath/ath9k/eeprom.h
+++ b/drivers/net/wireless/ath/ath9k/eeprom.h
@@ -191,6 +191,7 @@
 #define AR9287_EEP_NO_BACK_VER       AR9287_EEP_MINOR_VER_1
 
 #define AR9287_EEP_START_LOC            128
+#define AR9287_HTC_EEP_START_LOC        256
 #define AR9287_NUM_2G_CAL_PIERS         3
 #define AR9287_NUM_2G_CCK_TARGET_POWERS 3
 #define AR9287_NUM_2G_20_TARGET_POWERS  3
diff --git a/drivers/net/wireless/ath/ath9k/eeprom_9287.c b/drivers/net/wireless/ath/ath9k/eeprom_9287.c
index 4a52cf03808b..dff2da777312 100644
--- a/drivers/net/wireless/ath/ath9k/eeprom_9287.c
+++ b/drivers/net/wireless/ath/ath9k/eeprom_9287.c
@@ -34,9 +34,14 @@ static bool ath9k_hw_ar9287_fill_eeprom(struct ath_hw *ah)
 	struct ar9287_eeprom *eep = &ah->eeprom.map9287;
 	struct ath_common *common = ath9k_hw_common(ah);
 	u16 *eep_data;
-	int addr, eep_start_loc = AR9287_EEP_START_LOC;
+	int addr, eep_start_loc;
 	eep_data = (u16 *)eep;
 
+	if (ah->hw_version.devid == 0x7015)
+		eep_start_loc = AR9287_HTC_EEP_START_LOC;
+	else
+		eep_start_loc = AR9287_EEP_START_LOC;
+
 	if (!ath9k_hw_use_flash(ah)) {
 		ath_print(common, ATH_DBG_EEPROM,
 			  "Reading from EEPROM, not flash\n");
diff --git a/drivers/net/wireless/ath/ath9k/hif_usb.c b/drivers/net/wireless/ath/ath9k/hif_usb.c
index 61c1bee3f26a..17e7a9a367e7 100644
--- a/drivers/net/wireless/ath/ath9k/hif_usb.c
+++ b/drivers/net/wireless/ath/ath9k/hif_usb.c
@@ -799,7 +799,7 @@ static int ath9k_hif_usb_download_fw(struct hif_device_usb *hif_dev)
 	}
 	kfree(buf);
 
-	if (hif_dev->device_id == 0x7010)
+	if ((hif_dev->device_id == 0x7010) || (hif_dev->device_id == 0x7015))
 		firm_offset = AR7010_FIRMWARE_TEXT;
 	else
 		firm_offset = AR9271_FIRMWARE_TEXT;
@@ -901,6 +901,7 @@ static int ath9k_hif_usb_probe(struct usb_interface *interface,
 
 	switch(hif_dev->device_id) {
 	case 0x7010:
+	case 0x7015:
 	case 0x9018:
 		if (le16_to_cpu(udev->descriptor.bcdDevice) == 0x0202)
 			hif_dev->fw_name = FIRMWARE_AR7010_1_1;
@@ -912,11 +913,6 @@ static int ath9k_hif_usb_probe(struct usb_interface *interface,
 		break;
 	}
 
-	if (!hif_dev->fw_name) {
-		dev_err(&udev->dev, "Can't determine firmware !\n");
-		goto err_htc_hw_alloc;
-	}
-
 	ret = ath9k_hif_usb_dev_init(hif_dev);
 	if (ret) {
 		ret = -EINVAL;
diff --git a/drivers/net/wireless/ath/ath9k/htc_drv_init.c b/drivers/net/wireless/ath/ath9k/htc_drv_init.c
index 148b43317fdb..2d4279191d7a 100644
--- a/drivers/net/wireless/ath/ath9k/htc_drv_init.c
+++ b/drivers/net/wireless/ath/ath9k/htc_drv_init.c
@@ -245,6 +245,7 @@ static int ath9k_init_htc_services(struct ath9k_htc_priv *priv, u16 devid)
 
 	switch(devid) {
 	case 0x7010:
+	case 0x7015:
 	case 0x9018:
 		priv->htc->credits = 45;
 		break;
diff --git a/drivers/net/wireless/ath/ath9k/reg.h b/drivers/net/wireless/ath/ath9k/reg.h
index 633e3d949ec0..d01c4adab8d6 100644
--- a/drivers/net/wireless/ath/ath9k/reg.h
+++ b/drivers/net/wireless/ath/ath9k/reg.h
@@ -899,6 +899,7 @@
 
 #define AR_DEVID_7010(_ah) \
 	(((_ah)->hw_version.devid == 0x7010) || \
+	 ((_ah)->hw_version.devid == 0x7015) || \
 	 ((_ah)->hw_version.devid == 0x9018))
 
 #define AR_RADIO_SREV_MAJOR                   0xf0
-- 
cgit v1.2.3-70-g09d2


From 6ccf15a1a76d2ff915cdef6ae4d12d0170087118 Mon Sep 17 00:00:00 2001
From: Maxim Levitsky <maximlevitsky@gmail.com>
Date: Fri, 13 Aug 2010 11:27:28 -0400
Subject: ath5k: disable ASPM L0s for all cards

Atheros PCIe wireless cards handled by ath5k do require L0s disabled.
For distributions shipping with CONFIG_PCIEASPM (this will be enabled
by default in the future in 2.6.36) this will also mean both L1 and L0s
will be disabled when a pre 1.1 PCIe device is detected. We do know L1
works correctly even for all ath5k pre 1.1 PCIe devices though but cannot
currently undue the effect of a blacklist, for details you can read
pcie_aspm_sanity_check() and see how it adjusts the device link
capability.

It may be possible in the future to implement some PCI API to allow
drivers to override blacklists for pre 1.1 PCIe but for now it is
best to accept that both L0s and L1 will be disabled completely for
distributions shipping with CONFIG_PCIEASPM rather than having this
issue present. Motivation for adding this new API will be to help
with power consumption for some of these devices.

Example of issues you'd see:

  - On the Acer Aspire One (AOA150, Atheros Communications Inc. AR5001
    Wireless Network Adapter [168c:001c] (rev 01)) doesn't work well
    with ASPM enabled, the card will eventually stall on heavy traffic
    with often 'unsupported jumbo' warnings appearing. Disabling
    ASPM L0s in ath5k fixes these problems.

  - On the same card you would see a storm of RXORN interrupts
    even though medium is idle.

Credit for root causing and fixing the bug goes to Jussi Kivilinna.

Cc: David Quan <David.Quan@atheros.com>
Cc: Matthew Garrett <mjg59@srcf.ucam.org>
Cc: Tim Gardner <tim.gardner@canonical.com>
Cc: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Cc: stable@kernel.org
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---
 drivers/net/wireless/ath/ath5k/base.c | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

(limited to 'drivers')

diff --git a/drivers/net/wireless/ath/ath5k/base.c b/drivers/net/wireless/ath/ath5k/base.c
index 0d5de2574dd1..373dcfec689c 100644
--- a/drivers/net/wireless/ath/ath5k/base.c
+++ b/drivers/net/wireless/ath/ath5k/base.c
@@ -48,6 +48,7 @@
 #include <linux/netdevice.h>
 #include <linux/cache.h>
 #include <linux/pci.h>
+#include <linux/pci-aspm.h>
 #include <linux/ethtool.h>
 #include <linux/uaccess.h>
 #include <linux/slab.h>
@@ -476,6 +477,26 @@ ath5k_pci_probe(struct pci_dev *pdev,
 	int ret;
 	u8 csz;
 
+	/*
+	 * L0s needs to be disabled on all ath5k cards.
+	 *
+	 * For distributions shipping with CONFIG_PCIEASPM (this will be enabled
+	 * by default in the future in 2.6.36) this will also mean both L1 and
+	 * L0s will be disabled when a pre 1.1 PCIe device is detected. We do
+	 * know L1 works correctly even for all ath5k pre 1.1 PCIe devices
+	 * though but cannot currently undue the effect of a blacklist, for
+	 * details you can read pcie_aspm_sanity_check() and see how it adjusts
+	 * the device link capability.
+	 *
+	 * It may be possible in the future to implement some PCI API to allow
+	 * drivers to override blacklists for pre 1.1 PCIe but for now it is
+	 * best to accept that both L0s and L1 will be disabled completely for
+	 * distributions shipping with CONFIG_PCIEASPM rather than having this
+	 * issue present. Motivation for adding this new API will be to help
+	 * with power consumption for some of these devices.
+	 */
+	pci_disable_link_state(pdev, PCIE_LINK_STATE_L0S);
+
 	ret = pci_enable_device(pdev);
 	if (ret) {
 		dev_err(&pdev->dev, "can't enable device\n");
-- 
cgit v1.2.3-70-g09d2