crypto: hifn_795x, picoxcell - use ablkcipher_request_cast

Use ablkcipher_request_cast() instead of open-coding it.

Signed-off-by: Geliang Tang <geliangtang@163.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/picoxcell_crypto.c

@@ -856,8 +856,7 @@ static int spacc_ablk_need_fallback(struct spacc_req *req)
 
 static void spacc_ablk_complete(struct spacc_req *req)
 {
-	struct ablkcipher_request *ablk_req =
-		container_of(req->req, struct ablkcipher_request, base);
+	struct ablkcipher_request *ablk_req = ablkcipher_request_cast(req->req);
 
 	if (ablk_req->src != ablk_req->dst) {
 		spacc_free_ddt(req, req->src_ddt, req->src_addr, ablk_req->src,