mtd: Fix mtd_check_oob_ops()

The mtd_check_oob_ops() helper verifies if the operation defined by the
user is correct.

Fix the check that verifies if the entire requested area exists. This
check is too restrictive and will fail anytime the last data byte of the
very last page is included in an operation.

Fixes: 5cdd929da53d ("mtd: Add sanity checks in mtd_write/read_oob()")
Signed-off-by: Miquel Raynal <miquel.raynal@free-electrons.com>
Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Richard Weinberger <richard@nod.at>

diff --git a/drivers/mtd/mtdcore.c b/drivers/mtd/mtdcore.c
index f80e911b8843819db8dcd1956c76ce2bf60b5ab8..73b6055774474e322b07cda4144c48b5b235a55c 100644 (file)
--- a/drivers/mtd/mtdcore.c
+++ b/drivers/mtd/mtdcore.c
@@ -1114,7 +1114,7 @@ static int mtd_check_oob_ops(struct mtd_info *mtd, loff_t offs,
        if (!ops->oobbuf)
                ops->ooblen = 0;
 
-       if (offs < 0 || offs + ops->len >= mtd->size)
+       if (offs < 0 || offs + ops->len > mtd->size)
                return -EINVAL;
 
        if (ops->ooblen) {