UBI: add an helper to check lnum validity

ubi_leb_valid() is here to replace the
lnum < 0 || lnum >= vol->reserved_pebs checks.

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Richard Weinberger <richard@nod.at>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/mtd/ubi/cdev.c b/drivers/mtd/ubi/cdev.c
index 3490dcd99ad1..45c329694a5e 100644
--- a/drivers/mtd/ubi/cdev.c
+++ b/drivers/mtd/ubi/cdev.c
@@ -454,7 +454,7 @@ static long vol_cdev_ioctl(struct file *file, unsigned int cmd,
 
                 /* Validate the request */
                 err = -EINVAL;
-                if (req.lnum < 0 || req.lnum >= vol->reserved_pebs ||
+                if (!ubi_leb_valid(vol, req.lnum) ||
                     req.bytes < 0 || req.bytes > vol->usable_leb_size)
                         break;
 
@@ -485,7 +485,7 @@ static long vol_cdev_ioctl(struct file *file, unsigned int cmd,
                         break;
                 }
 
-                if (lnum < 0 || lnum >= vol->reserved_pebs) {
+                if (!ubi_leb_valid(vol, lnum)) {
                         err = -EINVAL;
                         break;
                 }