[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>
diff --git a/arch/s390/crypto/sha1_s390.c b/arch/s390/crypto/sha1_s390.c
index 98c896b..36bb534 100644
--- a/arch/s390/crypto/sha1_s390.c
+++ b/arch/s390/crypto/sha1_s390.c
@@ -40,19 +40,20 @@
u8 buffer[2 * SHA1_BLOCK_SIZE];
};
-static void
-sha1_init(void *ctx)
+static void sha1_init(void *ctx_arg)
{
- static const struct crypt_s390_sha1_ctx initstate = {
- .state = {
- 0x67452301,
- 0xEFCDAB89,
- 0x98BADCFE,
- 0x10325476,
- 0xC3D2E1F0
- },
+ struct crypt_s390_sha1_ctx *ctx = ctx_arg;
+ static const u32 initstate[5] = {
+ 0x67452301,
+ 0xEFCDAB89,
+ 0x98BADCFE,
+ 0x10325476,
+ 0xC3D2E1F0
};
- memcpy(ctx, &initstate, sizeof(initstate));
+
+ ctx->count = 0;
+ memcpy(ctx->state, &initstate, sizeof(initstate));
+ ctx->buf_len = 0;
}
static void