diff options
| author | Joakim Tjernlund <joakim.tjernlund@infinera.com> | 2018-06-06 12:13:29 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-07-03 11:24:55 +0200 |
| commit | fbbde9343c3e2452f304cc7715d77d4c9481ac3a (patch) | |
| tree | 07b2067a253dea26c47bb475de3d5bc44354f9c0 /drivers/mtd | |
| parent | 2f11a0c8c23ab092feef59a941c373b0f93c51d7 (diff) | |
mtd: cfi_cmdset_0002: Fix unlocking requests crossing a chip boudary
commit 0cd8116f172eed018907303dbff5c112690eeb91 upstream.
The "sector is in requested range" test used to determine whether
sectors should be re-locked or not is done on a variable that is reset
everytime we cross a chip boundary, which can lead to some blocks being
re-locked while the caller expect them to be unlocked.
Fix the check to make sure this cannot happen.
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>
Diffstat (limited to 'drivers/mtd')
| -rw-r--r-- | drivers/mtd/chips/cfi_cmdset_0002.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/mtd/chips/cfi_cmdset_0002.c b/drivers/mtd/chips/cfi_cmdset_0002.c index b6cbe683c9c2..c3e90e67f3f4 100644 --- a/drivers/mtd/chips/cfi_cmdset_0002.c +++ b/drivers/mtd/chips/cfi_cmdset_0002.c @@ -2669,7 +2669,7 @@ static int __maybe_unused cfi_ppb_unlock(struct mtd_info *mtd, loff_t ofs, * sectors shall be unlocked, so lets keep their locking * status at "unlocked" (locked=0) for the final re-locking. */ - if ((adr < ofs) || (adr >= (ofs + len))) { + if ((offset < ofs) || (offset >= (ofs + len))) { sect[sectors].chip = &cfi->chips[chipnum]; sect[sectors].adr = adr; sect[sectors].locked = do_ppb_xxlock( |