[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>
diff --git a/crypto/sha256.c b/crypto/sha256.c
index 9d5ef67..d62264a 100644
--- a/crypto/sha256.c
+++ b/crypto/sha256.c
@@ -313,6 +313,7 @@
.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,