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| author |   Joakim Tjernlund <joakim.tjernlund@infinera.com> | 2018-06-06 12:13:30 +0200 |
|---|---|---|
| committer |   Boris Brezillon <boris.brezillon@bootlin.com> | 2018-06-22 10:29:16 +0200 |
| commit | f1ce87f6080b1dda7e7b1eda3da332add19d87b9 (patch) | |
| tree | af709314e6f9270ba63b01aebf49673822ac413a /drivers/mtd/chips/cfi_cmdset_0002.c | |
| parent | mtd: cfi_cmdset_0002: Fix unlocking requests crossing a chip boudary (diff) | |
| download | linux-dev-f1ce87f6080b1dda7e7b1eda3da332add19d87b9.tar.xz linux-dev-f1ce87f6080b1dda7e7b1eda3da332add19d87b9.zip | |
mtd: cfi_cmdset_0002: Avoid walking all chips when unlocking.
cfi_ppb_unlock() walks all flash chips when unlocking sectors,
avoid walking chips unaffected by the unlock operation.
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>
Diffstat (limited to '')
| -rw-r--r-- | drivers/mtd/chips/cfi_cmdset_0002.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/mtd/chips/cfi_cmdset_0002.c b/drivers/mtd/chips/cfi_cmdset_0002.c index 9cfc2645dd93..1b64ac8c5bc8 100644 --- a/drivers/mtd/chips/cfi_cmdset_0002.c +++ b/drivers/mtd/chips/cfi_cmdset_0002.c @@ -2676,6 +2676,8 @@ static int __maybe_unused cfi_ppb_unlock(struct mtd_info *mtd, loff_t ofs, i++; if (adr >> cfi->chipshift) { + if (offset >= (ofs + len)) + break; adr = 0; chipnum++; |