crypto: skcipher - Make skcipher_walk src.virt.addr const

Mark the src.virt.addr field in struct skcipher_walk as a pointer
to const data.  This guarantees that the user won't modify the data
which should be done through dst.virt.addr to ensure that flushing
is done when necessary.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 1 insertions, 1 deletions

diff --git a/crypto/xts.c b/crypto/xts.c
index 821060ede2cf..31529c9ef08f 100644
--- a/crypto/xts.c
+++ b/crypto/xts.c
@@ -99,7 +99,7 @@ static int xts_xor_tweak(struct skcipher_request *req, bool second_pass,
 
 	while (w.nbytes) {
 		unsigned int avail = w.nbytes;
-		le128 *wsrc;
+		const le128 *wsrc;
 		le128 *wdst;
 
 		wsrc = w.src.virt.addr;