[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, 2 insertions, 0 deletions

diff --git a/crypto/sha512.c b/crypto/sha512.c
index 3e6e9392310c..7dbec4f6b947 100644
--- a/crypto/sha512.c
+++ b/crypto/sha512.c
@@ -281,6 +281,7 @@ static struct crypto_alg sha512 = {
         .cra_blocksize  = SHA512_HMAC_BLOCK_SIZE,
         .cra_ctxsize    = sizeof(struct sha512_ctx),
         .cra_module     = THIS_MODULE,
+        .cra_alignmask  = 3,
         .cra_list       = LIST_HEAD_INIT(sha512.cra_list),
         .cra_u          = { .digest = {
                                 .dia_digestsize = SHA512_DIGEST_SIZE,
@@ -295,6 +296,7 @@ static struct crypto_alg sha384 = {
         .cra_flags      = CRYPTO_ALG_TYPE_DIGEST,
         .cra_blocksize  = SHA384_HMAC_BLOCK_SIZE,
         .cra_ctxsize    = sizeof(struct sha512_ctx),
+        .cra_alignmask  = 3,
         .cra_module     = THIS_MODULE,
         .cra_list       = LIST_HEAD_INIT(sha384.cra_list),
         .cra_u          = { .digest = {