1 files changed, 12 insertions, 11 deletions

diff --git a/crypto/sha1.c b/crypto/sha1.c
index 292dcc13ff92..7b1abca29365 100644
--- a/crypto/sha1.c
+++ b/crypto/sha1.c
@@ -49,32 +49,33 @@ static void sha1_init(void *ctx)
 static void sha1_update(void *ctx, const u8 *data, unsigned int len)
 {
         struct sha1_ctx *sctx = ctx;
-        unsigned int i, j;
+        unsigned int partial, done;
         const u8 *src;
 
-        j = (sctx->count >> 3) & 0x3f;
+        partial = (sctx->count >> 3) & 0x3f;
         sctx->count += len << 3;
-        i = 0;
+        done = 0;
         src = data;
 
-        if ((j + len) > 63) {
+        if ((partial + len) > 63) {
                 u32 temp[SHA_WORKSPACE_WORDS];
 
-                if (j) {
-                        memcpy(&sctx->buffer[j], data, (i = 64-j));
+                if (partial) {
+                        done = 64 - partial;
+                        memcpy(sctx->buffer + partial, data, done);
                         src = sctx->buffer;
                 }
 
                 do {
                         sha_transform(sctx->state, src, temp);
-                        i += 64;
-                        src = &data[i];
-                } while (i + 63 < len);
+                        done += 64;
+                        src = data + done;
+                } while (done + 63 < len);
 
                 memset(temp, 0, sizeof(temp));
-                j = 0;
+                partial = 0;
         }
-        memcpy(&sctx->buffer[j], src, len - i);
+        memcpy(sctx->buffer + partial, src, len - done);
 }