[CRYPTO] digest: Remove unnecessary zeroing during init

Various digest algorithms operate one block at a time and therefore
keep a temporary buffer of partial blocks.  This buffer does not need
to be initialised since there is a counter which indicates what is and
isn't valid in it.

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

1 files changed, 0 insertions, 1 deletions

diff --git a/crypto/sha256.c b/crypto/sha256.c
index d62264a8a33e..4533a0564895 100644
--- a/crypto/sha256.c
+++ b/crypto/sha256.c
@@ -242,7 +242,6 @@ static void sha256_init(void *ctx)
         sctx->state[6] = H6;
         sctx->state[7] = H7;
         sctx->count[0] = sctx->count[1] = 0;
-        memset(sctx->buf, 0, sizeof(sctx->buf));
 }
 
 static void sha256_update(void *ctx, const u8 *data, unsigned int len)