From: Bruce Leonard <brucle@selinc.com>
Date: Thu, 3 Jul 2008 07:35:49 +0000 (+0300)
Subject: UBI: fix 64-bit calculations
X-Git-Tag: firefly_0821_release~18818^2~13
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=73789a3d9fd8e500e121c1d4a5a2b16dd748ab5f;p=firefly-linux-kernel-4.4.55.git

UBI: fix 64-bit calculations

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

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;