[CRYPTO] digest: Add alignment handling

Some hash modules load/store data words directly.  The digest layer
should pass properly aligned buffer to update()/final() method.  This
patch also add cra_alignmask to some hash modules.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 1 insertions, 0 deletions

diff --git a/crypto/sha256.c b/crypto/sha256.c
index 9d5ef674d6a9..d62264a8a33e 100644
--- a/crypto/sha256.c
+++ b/crypto/sha256.c
@@ -313,6 +313,7 @@ static struct crypto_alg alg = {
         .cra_blocksize  =       SHA256_HMAC_BLOCK_SIZE,
         .cra_ctxsize    =       sizeof(struct sha256_ctx),
         .cra_module     =       THIS_MODULE,
+        .cra_alignmask  =       3,
         .cra_list       =       LIST_HEAD_INIT(alg.cra_list),
         .cra_u          =       { .digest = {
         .dia_digestsize =       SHA256_DIGEST_SIZE,