X-Git-Url: https://git.kernel.dk/?p=fio.git;a=blobdiff_plain;f=md5.c;h=6b61012e85da005d418a7c4ea1ef22349038ed82;hp=cf1f814a0d63c2cee558c8049140156e90f9723c;hb=8c432325c3df2075a77b27eab8a87704cf7b48ee;hpb=ebac4655dd3624f3296ff83be48e0cdc02852f18

diff --git a/md5.c b/md5.c
index cf1f814a..6b61012e 100644
--- a/md5.c
+++ b/md5.c
@@ -9,10 +9,11 @@ static void md5_transform(uint32_t *hash, uint32_t const *in)
 {
 	uint32_t a, b, c, d;
 
-	a = hash[0];
-	b = hash[1];
-	c = hash[2];
-	d = hash[3];
+	/*
+	 * This used to be set from the hash[0..3] input, but we can
+	 * skip a memory clear if we just start from 0 instead.
+	 */
+	a = b = c = d = 0;
 
 	MD5STEP(F1, a, b, c, d, in[0] + 0xd76aa478, 7);
 	MD5STEP(F1, d, a, b, c, in[1] + 0xe8c7b756, 12);
@@ -82,10 +83,10 @@ static void md5_transform(uint32_t *hash, uint32_t const *in)
 	MD5STEP(F4, c, d, a, b, in[2] + 0x2ad7d2bb, 15);
 	MD5STEP(F4, b, c, d, a, in[9] + 0xeb86d391, 21);
 
-	hash[0] += a;
-	hash[1] += b;
-	hash[2] += c;
-	hash[3] += d;
+	hash[0] = a;
+	hash[1] = b;
+	hash[2] = c;
+	hash[3] = d;
 }
 
 void md5_update(struct md5_ctx *mctx, const uint8_t *data, unsigned int len)