diff --git a/drivers/crypto/sunxi-ss/sun4i-ss-hash.c b/drivers/crypto/sunxi-ss/sun4i-ss-hash.c
index e53c3127b7432e4dc9fc7c9a4a1b8ffd5dd46fc3..bc3cbde072190ed0621470d8d3dff37184489448 100644
--- a/drivers/crypto/sunxi-ss/sun4i-ss-hash.c
+++ b/drivers/crypto/sunxi-ss/sun4i-ss-hash.c
@@ -250,7 +250,7 @@ static int sun4i_hash(struct ahash_request *areq)
 			i = 0;
 		in_sg = sg_next(in_sg);
 	}
-	if (i == 1 && !op->len)
+	if (i == 1 && !op->len && areq->nbytes)
 		dev_dbg(ss->dev, "We can DMA\n");
 
 	i = 0;