diff options
| author | Joakim Tjernlund <joakim.tjernlund@infinera.com> | 2018-06-06 12:13:30 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-07-03 11:18:46 +0200 |
| commit | 07caec8590b981024b48621f82040857d93eb41a (patch) | |
| tree | fb993101eb040a7b785539a00cedbf54722b089b /drivers | |
| parent | 520516d1ac9a7f112c2505bd9ca0587fb1aaee4c (diff) | |
mtd: cfi_cmdset_0002: Avoid walking all chips when unlocking.
commit f1ce87f6080b1dda7e7b1eda3da332add19d87b9 upstream.
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -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 6718b971e4d4..7eb3155fa3c0 100644 --- a/drivers/mtd/chips/cfi_cmdset_0002.c +++ b/drivers/mtd/chips/cfi_cmdset_0002.c @@ -2683,6 +2683,8 @@ 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++; |