diff options
| author | Joakim Tjernlund <joakim.tjernlund@infinera.com> | 2018-06-06 12:13:27 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-07-03 11:18:46 +0200 |
| commit | ca99cdecc9dd38f3123cf4d42f9dcea0f1a1bb69 (patch) | |
| tree | 1865e63f4e350ef6e7597610ff1c877ff3f86cf9 | |
| parent | a84a8c9aa2c042a565a793bd6ebe8ccf482df554 (diff) | |
mtd: cfi_cmdset_0002: Use right chip in do_ppb_xxlock()
commit f93aa8c4de307069c270b2d81741961162bead6c upstream.
do_ppb_xxlock() fails to add chip->start when querying for lock status
(and chip_ready test), which caused false status reports.
Fix that by adding adr += chip->start and adjust call sites
accordingly.
Fixes: 1648eaaa1575 ("mtd: cfi_cmdset_0002: Support Persistent Protection Bits (PPB) locking")
Cc: stable@vger.kernel.org
Signed-off-by: Joakim Tjernlund <joakim.tjernlund@infinera.com>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/mtd/chips/cfi_cmdset_0002.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/drivers/mtd/chips/cfi_cmdset_0002.c b/drivers/mtd/chips/cfi_cmdset_0002.c index 2e48cad7cdea..178ce465c933 100644 --- a/drivers/mtd/chips/cfi_cmdset_0002.c +++ b/drivers/mtd/chips/cfi_cmdset_0002.c @@ -2551,8 +2551,9 @@ static int __maybe_unused do_ppb_xxlock(struct map_info *map, unsigned long timeo; int ret; + adr += chip->start; mutex_lock(&chip->mutex); - ret = get_chip(map, chip, adr + chip->start, FL_LOCKING); + ret = get_chip(map, chip, adr, FL_LOCKING); if (ret) { mutex_unlock(&chip->mutex); return ret; @@ -2570,8 +2571,8 @@ static int __maybe_unused do_ppb_xxlock(struct map_info *map, if (thunk == DO_XXLOCK_ONEBLOCK_LOCK) { chip->state = FL_LOCKING; - map_write(map, CMD(0xA0), chip->start + adr); - map_write(map, CMD(0x00), chip->start + adr); + map_write(map, CMD(0xA0), adr); + map_write(map, CMD(0x00), adr); } else if (thunk == DO_XXLOCK_ONEBLOCK_UNLOCK) { /* * Unlocking of one specific sector is not supported, so we @@ -2609,7 +2610,7 @@ static int __maybe_unused do_ppb_xxlock(struct map_info *map, map_write(map, CMD(0x00), chip->start); chip->state = FL_READY; - put_chip(map, chip, adr + chip->start); + put_chip(map, chip, adr); mutex_unlock(&chip->mutex); return ret; |