UBI: fix 64-bit calculations

Signed-off-by: Bruce Leonard <brucle@selinc.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/mtd/ubi/cdev.c b/drivers/mtd/ubi/cdev.c
index 0cdaf9fba7b0..3e3449ec07f0 100644
--- a/drivers/mtd/ubi/cdev.c
+++ b/drivers/mtd/ubi/cdev.c
@@ -437,7 +437,8 @@ static int vol_cdev_ioctl(struct inode *inode, struct file *file,
                         break;
                 }
 
-                rsvd_bytes = vol->reserved_pebs * (ubi->leb_size-vol->data_pad);
+                rsvd_bytes = (long long)vol->reserved_pebs *
+                                        ubi->leb_size-vol->data_pad;
                 if (bytes < 0 || bytes > rsvd_bytes) {
                         err = -EINVAL;
                         break;