commit a83034f5cb135bceb5b23dce1746ef2d98c68234
author Dan Carpenter <dan.carpenter@oracle.com> Mon Mar 23 14:03:55 2015 +0300
committer Herbert Xu <herbert@gondor.apana.org.au> Mon Mar 23 22:06:50 2015 +1100
tree 4a7db7403110fecc2a1b5ff6b35aca6a92254b68
parent 900831a4d9cf3d0280527f176fc20e8c0cdbb63a

crypto: img-hash - shift wrapping bug in img_hash_hw_init()

"hdev->req->nbytes" is an unsigned int so we so we lose the upper 3 bits
to the shift wrap bug.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/img-hash.c

diff --git a/drivers/crypto/img-hash.c b/drivers/crypto/img-hash.c
index 601ab35..ad47d0d 100644
--- a/drivers/crypto/img-hash.c
+++ b/drivers/crypto/img-hash.c
@@ -464,7 +464,7 @@
 	img_hash_write(hdev, CR_RESET, CR_RESET_UNSET);
 	img_hash_write(hdev, CR_INTENAB, CR_INT_NEW_RESULTS_SET);
 
-	nbits = (hdev->req->nbytes << 3);
+	nbits = (u64)hdev->req->nbytes << 3;
 	u = nbits >> 32;
 	l = nbits;
 	img_hash_write(hdev, CR_MESSAGE_LENGTH_H, u);