1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/mtd/ubi/cdev.c b/drivers/mtd/ubi/cdev.c
index d647e504f9b1..d16fccf79179 100644
--- a/drivers/mtd/ubi/cdev.c
+++ b/drivers/mtd/ubi/cdev.c
@@ -455,7 +455,7 @@ 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 ||
-                    req.bytes < 0 || req.lnum >= vol->usable_leb_size)
+                    req.bytes < 0 || req.bytes > vol->usable_leb_size)
                         break;
 
                 err = get_exclusive(desc);