[PATCH] usb: storage: sddr55: avoid integer overflow

[Karina Yankevich]

We're possibly losing information by shifting an int.
Fix it by adding the necessary cast.

Found by OMP on behalf of Linux Verification Center
(linuxtesting.org) with SVACE.

Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Karina Yankevich <k.yankevich@xxxxxx>
---
 drivers/usb/storage/sddr55.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/usb/storage/sddr55.c b/drivers/usb/storage/sddr55.c
index 15dc25801cdc..4aeff73de147 100644
--- a/drivers/usb/storage/sddr55.c
+++ b/drivers/usb/storage/sddr55.c
@@ -236,7 +236,7 @@ static int sddr55_read_data(struct us_data *us,
 			memset (buffer, 0, len);
 		} else {
 
-			address = (pba << info->blockshift) + page;
+			address = ((unsigned long)pba << info->blockshift) + page;
 
 			command[0] = 0;
 			command[1] = LSB_of(address>>16);
@@ -411,7 +411,7 @@ static int sddr55_write_data(struct us_data *us,
 			command[4] = 0x40;
 		}
 
-		address = (pba << info->blockshift) + page;
+		address = ((unsigned long)pba << info->blockshift) + page;
 
 		command[1] = LSB_of(address>>16);
 		command[2] = LSB_of(address>>8); 
-- 
2.39.1