crypto: marvell/cesa - Use crypto_wait_req

This patch replaces the custom crypto completion function with
crypto_req_done.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/marvell/cesa/hash.c

@@ -1104,47 +1104,27 @@ struct ahash_alg mv_sha256_alg = {
 	}
 };
 
-struct mv_cesa_ahash_result {
-	struct completion completion;
-	int error;
-};
-
-static void mv_cesa_hmac_ahash_complete(struct crypto_async_request *req,
-					int error)
-{
-	struct mv_cesa_ahash_result *result = req->data;
-
-	if (error == -EINPROGRESS)
-		return;
-
-	result->error = error;
-	complete(&result->completion);
-}
-
 static int mv_cesa_ahmac_iv_state_init(struct ahash_request *req, u8 *pad,
 				       void *state, unsigned int blocksize)
 {
-	struct mv_cesa_ahash_result result;
+	DECLARE_CRYPTO_WAIT(result);
 	struct scatterlist sg;
 	int ret;
 
 	ahash_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG,
-				   mv_cesa_hmac_ahash_complete, &result);
+				   crypto_req_done, &result);
 	sg_init_one(&sg, pad, blocksize);
 	ahash_request_set_crypt(req, &sg, pad, blocksize);
-	init_completion(&result.completion);
 
 	ret = crypto_ahash_init(req);
 	if (ret)
 		return ret;
 
 	ret = crypto_ahash_update(req);
-	if (ret && ret != -EINPROGRESS)
-		return ret;
+	ret = crypto_wait_req(ret, &result);
 
-	wait_for_completion_interruptible(&result.completion);
-	if (result.error)
-		return result.error;
+	if (ret)
+		return ret;
 
 	ret = crypto_ahash_export(req, state);
 	if (ret)
@@ -1158,7 +1138,7 @@ static int mv_cesa_ahmac_pad_init(struct ahash_request *req,
 				  u8 *ipad, u8 *opad,
 				  unsigned int blocksize)
 {
-	struct mv_cesa_ahash_result result;
+	DECLARE_CRYPTO_WAIT(result);
 	struct scatterlist sg;
 	int ret;
 	int i;
@@ -1172,17 +1152,12 @@ static int mv_cesa_ahmac_pad_init(struct ahash_request *req,
 			return -ENOMEM;
 
 		ahash_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG,
-					   mv_cesa_hmac_ahash_complete,
-					   &result);
+					   crypto_req_done, &result);
 		sg_init_one(&sg, keydup, keylen);
 		ahash_request_set_crypt(req, &sg, ipad, keylen);
-		init_completion(&result.completion);
 
 		ret = crypto_ahash_digest(req);
-		if (ret == -EINPROGRESS) {
-			wait_for_completion_interruptible(&result.completion);
-			ret = result.error;
-		}
+		ret = crypto_wait_req(ret, &result);
 
 		/* Set the memory region to 0 to avoid any leak. */
 		kfree_sensitive(keydup);