Commit 07caec85 authored Jun 06, 2018 by Joakim Tjernlund Committed by Greg Kroah-Hartman Jul 03, 2018

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: 1648eaaa ("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>

parent 520516d1

drivers/mtd/chips/cfi_cmdset_0002.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -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++;