tree 46b4e9930e479b68ba858be373ec201b2b2d4157
parent 0bf4e48c20ca447e577c77bfc9205f1c8890c65d
author Joakim Tjernlund <joakim.tjernlund@infinera.com> 1528280009 +0200
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1530609790 +0200

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>