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-rw-r--r--drivers/mtd/nand/raw/nandsim.c8
-rw-r--r--drivers/mtd/tests/mtd_nandecctest.c12
-rw-r--r--drivers/mtd/tests/speedtest.c2
-rw-r--r--drivers/mtd/tests/stresstest.c19
-rw-r--r--drivers/mtd/ubi/block.c4
-rw-r--r--drivers/mtd/ubi/build.c14
-rw-r--r--drivers/mtd/ubi/cdev.c4
-rw-r--r--drivers/mtd/ubi/debug.c2
-rw-r--r--drivers/mtd/ubi/debug.h6
-rw-r--r--drivers/mtd/ubi/eba.c2
-rw-r--r--drivers/mtd/ubi/fastmap.c10
-rw-r--r--drivers/mtd/ubi/io.c2
-rw-r--r--drivers/mtd/ubi/ubi-media.h2
-rw-r--r--drivers/mtd/ubi/ubi.h9
-rw-r--r--drivers/mtd/ubi/vmt.c4
-rw-r--r--drivers/mtd/ubi/wl.c8
16 files changed, 52 insertions, 56 deletions
diff --git a/drivers/mtd/nand/raw/nandsim.c b/drivers/mtd/nand/raw/nandsim.c
index 24beade95c7f..672719023241 100644
--- a/drivers/mtd/nand/raw/nandsim.c
+++ b/drivers/mtd/nand/raw/nandsim.c
@@ -1393,7 +1393,7 @@ static int ns_do_read_error(struct nandsim *ns, int num)
unsigned int page_no = ns->regs.row;
if (ns_read_error(page_no)) {
- prandom_bytes(ns->buf.byte, num);
+ get_random_bytes(ns->buf.byte, num);
NS_WARN("simulating read error in page %u\n", page_no);
return 1;
}
@@ -1402,12 +1402,12 @@ static int ns_do_read_error(struct nandsim *ns, int num)
static void ns_do_bit_flips(struct nandsim *ns, int num)
{
- if (bitflips && prandom_u32() < (1 << 22)) {
+ if (bitflips && get_random_u16() < (1 << 6)) {
int flips = 1;
if (bitflips > 1)
- flips = (prandom_u32() % (int) bitflips) + 1;
+ flips = prandom_u32_max(bitflips) + 1;
while (flips--) {
- int pos = prandom_u32() % (num * 8);
+ int pos = prandom_u32_max(num * 8);
ns->buf.byte[pos / 8] ^= (1 << (pos % 8));
NS_WARN("read_page: flipping bit %d in page %d "
"reading from %d ecc: corrected=%u failed=%u\n",
diff --git a/drivers/mtd/tests/mtd_nandecctest.c b/drivers/mtd/tests/mtd_nandecctest.c
index c4f271314f52..440988562cfd 100644
--- a/drivers/mtd/tests/mtd_nandecctest.c
+++ b/drivers/mtd/tests/mtd_nandecctest.c
@@ -47,7 +47,7 @@ struct nand_ecc_test {
static void single_bit_error_data(void *error_data, void *correct_data,
size_t size)
{
- unsigned int offset = prandom_u32() % (size * BITS_PER_BYTE);
+ unsigned int offset = prandom_u32_max(size * BITS_PER_BYTE);
memcpy(error_data, correct_data, size);
__change_bit_le(offset, error_data);
@@ -58,9 +58,9 @@ static void double_bit_error_data(void *error_data, void *correct_data,
{
unsigned int offset[2];
- offset[0] = prandom_u32() % (size * BITS_PER_BYTE);
+ offset[0] = prandom_u32_max(size * BITS_PER_BYTE);
do {
- offset[1] = prandom_u32() % (size * BITS_PER_BYTE);
+ offset[1] = prandom_u32_max(size * BITS_PER_BYTE);
} while (offset[0] == offset[1]);
memcpy(error_data, correct_data, size);
@@ -71,7 +71,7 @@ static void double_bit_error_data(void *error_data, void *correct_data,
static unsigned int random_ecc_bit(size_t size)
{
- unsigned int offset = prandom_u32() % (3 * BITS_PER_BYTE);
+ unsigned int offset = prandom_u32_max(3 * BITS_PER_BYTE);
if (size == 256) {
/*
@@ -79,7 +79,7 @@ static unsigned int random_ecc_bit(size_t size)
* and 17th bit) in ECC code for 256 byte data block
*/
while (offset == 16 || offset == 17)
- offset = prandom_u32() % (3 * BITS_PER_BYTE);
+ offset = prandom_u32_max(3 * BITS_PER_BYTE);
}
return offset;
@@ -266,7 +266,7 @@ static int nand_ecc_test_run(const size_t size)
goto error;
}
- prandom_bytes(correct_data, size);
+ get_random_bytes(correct_data, size);
ecc_sw_hamming_calculate(correct_data, size, correct_ecc, sm_order);
for (i = 0; i < ARRAY_SIZE(nand_ecc_test); i++) {
nand_ecc_test[i].prepare(error_data, error_ecc,
diff --git a/drivers/mtd/tests/speedtest.c b/drivers/mtd/tests/speedtest.c
index c9ec7086bfa1..075bce32caa5 100644
--- a/drivers/mtd/tests/speedtest.c
+++ b/drivers/mtd/tests/speedtest.c
@@ -223,7 +223,7 @@ static int __init mtd_speedtest_init(void)
if (!iobuf)
goto out;
- prandom_bytes(iobuf, mtd->erasesize);
+ get_random_bytes(iobuf, mtd->erasesize);
bbt = kzalloc(ebcnt, GFP_KERNEL);
if (!bbt)
diff --git a/drivers/mtd/tests/stresstest.c b/drivers/mtd/tests/stresstest.c
index cb29c8c1b370..75b6ddc5dc4d 100644
--- a/drivers/mtd/tests/stresstest.c
+++ b/drivers/mtd/tests/stresstest.c
@@ -45,9 +45,8 @@ static int rand_eb(void)
unsigned int eb;
again:
- eb = prandom_u32();
/* Read or write up 2 eraseblocks at a time - hence 'ebcnt - 1' */
- eb %= (ebcnt - 1);
+ eb = prandom_u32_max(ebcnt - 1);
if (bbt[eb])
goto again;
return eb;
@@ -55,20 +54,12 @@ again:
static int rand_offs(void)
{
- unsigned int offs;
-
- offs = prandom_u32();
- offs %= bufsize;
- return offs;
+ return prandom_u32_max(bufsize);
}
static int rand_len(int offs)
{
- unsigned int len;
-
- len = prandom_u32();
- len %= (bufsize - offs);
- return len;
+ return prandom_u32_max(bufsize - offs);
}
static int do_read(void)
@@ -127,7 +118,7 @@ static int do_write(void)
static int do_operation(void)
{
- if (prandom_u32() & 1)
+ if (prandom_u32_max(2))
return do_read();
else
return do_write();
@@ -192,7 +183,7 @@ static int __init mtd_stresstest_init(void)
goto out;
for (i = 0; i < ebcnt; i++)
offsets[i] = mtd->erasesize;
- prandom_bytes(writebuf, bufsize);
+ get_random_bytes(writebuf, bufsize);
bbt = kzalloc(ebcnt, GFP_KERNEL);
if (!bbt)
diff --git a/drivers/mtd/ubi/block.c b/drivers/mtd/ubi/block.c
index 4cf67a2a0d04..75eaecc8639f 100644
--- a/drivers/mtd/ubi/block.c
+++ b/drivers/mtd/ubi/block.c
@@ -409,7 +409,7 @@ int ubiblock_create(struct ubi_volume_info *vi)
ret = blk_mq_alloc_tag_set(&dev->tag_set);
if (ret) {
dev_err(disk_to_dev(dev->gd), "blk_mq_alloc_tag_set failed");
- goto out_free_dev;;
+ goto out_free_dev;
}
@@ -441,7 +441,7 @@ int ubiblock_create(struct ubi_volume_info *vi)
/*
* Create one workqueue per volume (per registered block device).
- * Rembember workqueues are cheap, they're not threads.
+ * Remember workqueues are cheap, they're not threads.
*/
dev->wq = alloc_workqueue("%s", 0, 0, gd->disk_name);
if (!dev->wq) {
diff --git a/drivers/mtd/ubi/build.c b/drivers/mtd/ubi/build.c
index a32050fecabf..a901f8edfa41 100644
--- a/drivers/mtd/ubi/build.c
+++ b/drivers/mtd/ubi/build.c
@@ -807,6 +807,7 @@ static int autoresize(struct ubi_device *ubi, int vol_id)
* @ubi_num: number to assign to the new UBI device
* @vid_hdr_offset: VID header offset
* @max_beb_per1024: maximum expected number of bad PEB per 1024 PEBs
+ * @disable_fm: whether disable fastmap
*
* This function attaches MTD device @mtd_dev to UBI and assign @ubi_num number
* to the newly created UBI device, unless @ubi_num is %UBI_DEV_NUM_AUTO, in
@@ -814,11 +815,15 @@ static int autoresize(struct ubi_device *ubi, int vol_id)
* automatically. Returns the new UBI device number in case of success and a
* negative error code in case of failure.
*
+ * If @disable_fm is true, ubi doesn't create new fastmap even the module param
+ * 'fm_autoconvert' is set, and existed old fastmap will be destroyed after
+ * doing full scanning.
+ *
* Note, the invocations of this function has to be serialized by the
* @ubi_devices_mutex.
*/
int ubi_attach_mtd_dev(struct mtd_info *mtd, int ubi_num,
- int vid_hdr_offset, int max_beb_per1024)
+ int vid_hdr_offset, int max_beb_per1024, bool disable_fm)
{
struct ubi_device *ubi;
int i, err;
@@ -921,7 +926,7 @@ int ubi_attach_mtd_dev(struct mtd_info *mtd, int ubi_num,
UBI_FM_MIN_POOL_SIZE);
ubi->fm_wl_pool.max_size = ubi->fm_pool.max_size / 2;
- ubi->fm_disabled = !fm_autoconvert;
+ ubi->fm_disabled = (!fm_autoconvert || disable_fm) ? 1 : 0;
if (fm_debug)
ubi_enable_dbg_chk_fastmap(ubi);
@@ -962,7 +967,7 @@ int ubi_attach_mtd_dev(struct mtd_info *mtd, int ubi_num,
if (!ubi->fm_buf)
goto out_free;
#endif
- err = ubi_attach(ubi, 0);
+ err = ubi_attach(ubi, disable_fm ? 1 : 0);
if (err) {
ubi_err(ubi, "failed to attach mtd%d, error %d",
mtd->index, err);
@@ -1242,7 +1247,8 @@ static int __init ubi_init(void)
mutex_lock(&ubi_devices_mutex);
err = ubi_attach_mtd_dev(mtd, p->ubi_num,
- p->vid_hdr_offs, p->max_beb_per1024);
+ p->vid_hdr_offs, p->max_beb_per1024,
+ false);
mutex_unlock(&ubi_devices_mutex);
if (err < 0) {
pr_err("UBI error: cannot attach mtd%d\n",
diff --git a/drivers/mtd/ubi/cdev.c b/drivers/mtd/ubi/cdev.c
index cc9a28cf9d82..f43430b9c1e6 100644
--- a/drivers/mtd/ubi/cdev.c
+++ b/drivers/mtd/ubi/cdev.c
@@ -672,7 +672,7 @@ static int verify_rsvol_req(const struct ubi_device *ubi,
* @req: volumes re-name request
*
* This is a helper function for the volume re-name IOCTL which validates the
- * the request, opens the volume and calls corresponding volumes management
+ * request, opens the volume and calls corresponding volumes management
* function. Returns zero in case of success and a negative error code in case
* of failure.
*/
@@ -1041,7 +1041,7 @@ static long ctrl_cdev_ioctl(struct file *file, unsigned int cmd,
*/
mutex_lock(&ubi_devices_mutex);
err = ubi_attach_mtd_dev(mtd, req.ubi_num, req.vid_hdr_offset,
- req.max_beb_per1024);
+ req.max_beb_per1024, !!req.disable_fm);
mutex_unlock(&ubi_devices_mutex);
if (err < 0)
put_mtd_device(mtd);
diff --git a/drivers/mtd/ubi/debug.c b/drivers/mtd/ubi/debug.c
index 31d427ee191a..908d0e088557 100644
--- a/drivers/mtd/ubi/debug.c
+++ b/drivers/mtd/ubi/debug.c
@@ -590,7 +590,7 @@ int ubi_dbg_power_cut(struct ubi_device *ubi, int caller)
if (ubi->dbg.power_cut_max > ubi->dbg.power_cut_min) {
range = ubi->dbg.power_cut_max - ubi->dbg.power_cut_min;
- ubi->dbg.power_cut_counter += prandom_u32() % range;
+ ubi->dbg.power_cut_counter += prandom_u32_max(range);
}
return 0;
}
diff --git a/drivers/mtd/ubi/debug.h b/drivers/mtd/ubi/debug.h
index 118248a5d7d4..dc8d8f83657a 100644
--- a/drivers/mtd/ubi/debug.h
+++ b/drivers/mtd/ubi/debug.h
@@ -73,7 +73,7 @@ static inline int ubi_dbg_is_bgt_disabled(const struct ubi_device *ubi)
static inline int ubi_dbg_is_bitflip(const struct ubi_device *ubi)
{
if (ubi->dbg.emulate_bitflips)
- return !(prandom_u32() % 200);
+ return !prandom_u32_max(200);
return 0;
}
@@ -87,7 +87,7 @@ static inline int ubi_dbg_is_bitflip(const struct ubi_device *ubi)
static inline int ubi_dbg_is_write_failure(const struct ubi_device *ubi)
{
if (ubi->dbg.emulate_io_failures)
- return !(prandom_u32() % 500);
+ return !prandom_u32_max(500);
return 0;
}
@@ -101,7 +101,7 @@ static inline int ubi_dbg_is_write_failure(const struct ubi_device *ubi)
static inline int ubi_dbg_is_erase_failure(const struct ubi_device *ubi)
{
if (ubi->dbg.emulate_io_failures)
- return !(prandom_u32() % 400);
+ return !prandom_u32_max(400);
return 0;
}
diff --git a/drivers/mtd/ubi/eba.c b/drivers/mtd/ubi/eba.c
index ccc5979642b7..09c408c45a62 100644
--- a/drivers/mtd/ubi/eba.c
+++ b/drivers/mtd/ubi/eba.c
@@ -377,7 +377,7 @@ static int leb_write_lock(struct ubi_device *ubi, int vol_id, int lnum)
*
* This function locks a logical eraseblock for writing if there is no
* contention and does nothing if there is contention. Returns %0 in case of
- * success, %1 in case of contention, and and a negative error code in case of
+ * success, %1 in case of contention, and a negative error code in case of
* failure.
*/
static int leb_write_trylock(struct ubi_device *ubi, int vol_id, int lnum)
diff --git a/drivers/mtd/ubi/fastmap.c b/drivers/mtd/ubi/fastmap.c
index 6e95c4b1473e..ca2d9efe62c3 100644
--- a/drivers/mtd/ubi/fastmap.c
+++ b/drivers/mtd/ubi/fastmap.c
@@ -20,8 +20,7 @@ static inline unsigned long *init_seen(struct ubi_device *ubi)
if (!ubi_dbg_chk_fastmap(ubi))
return NULL;
- ret = kcalloc(BITS_TO_LONGS(ubi->peb_count), sizeof(unsigned long),
- GFP_KERNEL);
+ ret = bitmap_zalloc(ubi->peb_count, GFP_KERNEL);
if (!ret)
return ERR_PTR(-ENOMEM);
@@ -34,7 +33,7 @@ static inline unsigned long *init_seen(struct ubi_device *ubi)
*/
static inline void free_seen(unsigned long *seen)
{
- kfree(seen);
+ bitmap_free(seen);
}
/**
@@ -1108,8 +1107,7 @@ int ubi_fastmap_init_checkmap(struct ubi_volume *vol, int leb_count)
if (!ubi->fast_attach)
return 0;
- vol->checkmap = kcalloc(BITS_TO_LONGS(leb_count), sizeof(unsigned long),
- GFP_KERNEL);
+ vol->checkmap = bitmap_zalloc(leb_count, GFP_KERNEL);
if (!vol->checkmap)
return -ENOMEM;
@@ -1118,7 +1116,7 @@ int ubi_fastmap_init_checkmap(struct ubi_volume *vol, int leb_count)
void ubi_fastmap_destroy_checkmap(struct ubi_volume *vol)
{
- kfree(vol->checkmap);
+ bitmap_free(vol->checkmap);
}
/**
diff --git a/drivers/mtd/ubi/io.c b/drivers/mtd/ubi/io.c
index 8a7306cc1947..01b644861253 100644
--- a/drivers/mtd/ubi/io.c
+++ b/drivers/mtd/ubi/io.c
@@ -1147,7 +1147,7 @@ fail:
* @ubi: UBI device description object
* @pnum: the physical eraseblock number to check
*
- * This function returns zero if the erase counter header is all right and and
+ * This function returns zero if the erase counter header is all right and
* a negative error code if not or if an error occurred.
*/
static int self_check_peb_ec_hdr(const struct ubi_device *ubi, int pnum)
diff --git a/drivers/mtd/ubi/ubi-media.h b/drivers/mtd/ubi/ubi-media.h
index 386db0598e95..2c9cd3b6434f 100644
--- a/drivers/mtd/ubi/ubi-media.h
+++ b/drivers/mtd/ubi/ubi-media.h
@@ -131,7 +131,7 @@ enum {
* is changed radically. This field is duplicated in the volume identifier
* header.
*
- * The @vid_hdr_offset and @data_offset fields contain the offset of the the
+ * The @vid_hdr_offset and @data_offset fields contain the offset of the
* volume identifier header and user data, relative to the beginning of the
* physical eraseblock. These values have to be the same for all physical
* eraseblocks.
diff --git a/drivers/mtd/ubi/ubi.h b/drivers/mtd/ubi/ubi.h
index 078112e23dfd..c8f1bd4fa100 100644
--- a/drivers/mtd/ubi/ubi.h
+++ b/drivers/mtd/ubi/ubi.h
@@ -86,7 +86,7 @@ void ubi_err(const struct ubi_device *ubi, const char *fmt, ...);
* Error codes returned by the I/O sub-system.
*
* UBI_IO_FF: the read region of flash contains only 0xFFs
- * UBI_IO_FF_BITFLIPS: the same as %UBI_IO_FF, but also also there was a data
+ * UBI_IO_FF_BITFLIPS: the same as %UBI_IO_FF, but also there was a data
* integrity error reported by the MTD driver
* (uncorrectable ECC error in case of NAND)
* UBI_IO_BAD_HDR: the EC or VID header is corrupted (bad magic or CRC)
@@ -281,7 +281,7 @@ struct ubi_eba_leb_desc {
/**
* struct ubi_volume - UBI volume description data structure.
- * @dev: device object to make use of the the Linux device model
+ * @dev: device object to make use of the Linux device model
* @cdev: character device object to create character device
* @ubi: reference to the UBI device description object
* @vol_id: volume ID
@@ -439,7 +439,7 @@ struct ubi_debug_info {
/**
* struct ubi_device - UBI device description structure
- * @dev: UBI device object to use the the Linux device model
+ * @dev: UBI device object to use the Linux device model
* @cdev: character device object to create character device
* @ubi_num: UBI device number
* @ubi_name: UBI device name
@@ -937,7 +937,8 @@ int ubi_io_write_vid_hdr(struct ubi_device *ubi, int pnum,
/* build.c */
int ubi_attach_mtd_dev(struct mtd_info *mtd, int ubi_num,
- int vid_hdr_offset, int max_beb_per1024);
+ int vid_hdr_offset, int max_beb_per1024,
+ bool disable_fm);
int ubi_detach_mtd_dev(int ubi_num, int anyway);
struct ubi_device *ubi_get_device(int ubi_num);
void ubi_put_device(struct ubi_device *ubi);
diff --git a/drivers/mtd/ubi/vmt.c b/drivers/mtd/ubi/vmt.c
index 6ea95ade4ca6..8fcc0bdf0635 100644
--- a/drivers/mtd/ubi/vmt.c
+++ b/drivers/mtd/ubi/vmt.c
@@ -623,7 +623,7 @@ void ubi_free_volume(struct ubi_device *ubi, struct ubi_volume *vol)
* @ubi: UBI device description object
* @vol_id: volume ID
*
- * Returns zero if volume is all right and a a negative error code if not.
+ * Returns zero if volume is all right and a negative error code if not.
*/
static int self_check_volume(struct ubi_device *ubi, int vol_id)
{
@@ -776,7 +776,7 @@ fail:
* self_check_volumes - check information about all volumes.
* @ubi: UBI device description object
*
- * Returns zero if volumes are all right and a a negative error code if not.
+ * Returns zero if volumes are all right and a negative error code if not.
*/
static int self_check_volumes(struct ubi_device *ubi)
{
diff --git a/drivers/mtd/ubi/wl.c b/drivers/mtd/ubi/wl.c
index 55bae06cf408..68eb0f21b3fe 100644
--- a/drivers/mtd/ubi/wl.c
+++ b/drivers/mtd/ubi/wl.c
@@ -376,7 +376,7 @@ static struct ubi_wl_entry *find_mean_wl_entry(struct ubi_device *ubi,
* refill_wl_user_pool().
* @ubi: UBI device description object
*
- * This function returns a a wear leveling entry in case of success and
+ * This function returns a wear leveling entry in case of success and
* NULL in case of failure.
*/
static struct ubi_wl_entry *wl_get_wle(struct ubi_device *ubi)
@@ -429,7 +429,7 @@ static int prot_queue_del(struct ubi_device *ubi, int pnum)
/**
* sync_erase - synchronously erase a physical eraseblock.
* @ubi: UBI device description object
- * @e: the the physical eraseblock to erase
+ * @e: the physical eraseblock to erase
* @torture: if the physical eraseblock has to be tortured
*
* This function returns zero in case of success and a negative error code in
@@ -1016,7 +1016,7 @@ static int ensure_wear_leveling(struct ubi_device *ubi, int nested)
/*
* If the ubi->scrub tree is not empty, scrubbing is needed, and the
- * the WL worker has to be scheduled anyway.
+ * WL worker has to be scheduled anyway.
*/
if (!ubi->scrub.rb_node) {
#ifdef CONFIG_MTD_UBI_FASTMAP
@@ -1464,7 +1464,7 @@ static bool scrub_possible(struct ubi_device *ubi, struct ubi_wl_entry *e)
* ubi_bitflip_check - Check an eraseblock for bitflips and scrub it if needed.
* @ubi: UBI device description object
* @pnum: the physical eraseblock to schedule
- * @force: dont't read the block, assume bitflips happened and take action.
+ * @force: don't read the block, assume bitflips happened and take action.
*
* This function reads the given eraseblock and checks if bitflips occured.
* In case of bitflips, the eraseblock is scheduled for scrubbing.
generated by cgit v1.2.3-70-g09d2 (git 2.48.1) at 2025-06-01 11:24:16 +0000