diff --git a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c
index be7f46f..74b4e91 100644
--- a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c
+++ b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c
@@ -208,7 +208,7 @@
 
 	if (areq->src == areq->dst) {
 		nr_sgs = dma_map_sg(ce->dev, areq->src, ns, DMA_BIDIRECTIONAL);
-		if (!nr_sgs || nr_sgs > MAX_SG) {
+		if (nr_sgs <= 0 || nr_sgs > MAX_SG) {
 			dev_err(ce->dev, "Invalid sg number %d\n", nr_sgs);
 			err = -EINVAL;
 			goto theend_iv;
@@ -216,13 +216,13 @@
 		nr_sgd = nr_sgs;
 	} else {
 		nr_sgs = dma_map_sg(ce->dev, areq->src, ns, DMA_TO_DEVICE);
-		if (!nr_sgs || nr_sgs > MAX_SG) {
+		if (nr_sgs <= 0 || nr_sgs > MAX_SG) {
 			dev_err(ce->dev, "Invalid sg number %d\n", nr_sgs);
 			err = -EINVAL;
 			goto theend_iv;
 		}
 		nr_sgd = dma_map_sg(ce->dev, areq->dst, nd, DMA_FROM_DEVICE);
-		if (!nr_sgd || nr_sgd > MAX_SG) {
+		if (nr_sgd <= 0 || nr_sgd > MAX_SG) {
 			dev_err(ce->dev, "Invalid sg number %d\n", nr_sgd);
 			err = -EINVAL;
 			goto theend_sgs;
diff --git a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-hash.c b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-hash.c
index 0e6843e..8b5b9b9 100644
--- a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-hash.c
+++ b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-hash.c
@@ -389,7 +389,7 @@
 	cet->t_asym_ctl = 0;
 
 	nr_sgs = dma_map_sg(ce->dev, areq->src, ns, DMA_TO_DEVICE);
-	if (!nr_sgs || nr_sgs > MAX_SG) {
+	if (nr_sgs <= 0 || nr_sgs > MAX_SG) {
 		dev_err(ce->dev, "Invalid sg number %d\n", nr_sgs);
 		err = -EINVAL;
 		goto theend;
diff --git a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c
index fdcc98c..910d675 100644
--- a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c
+++ b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c
@@ -232,13 +232,13 @@
 		nr_sgd = nr_sgs;
 	} else {
 		nr_sgs = dma_map_sg(ss->dev, areq->src, nsgs, DMA_TO_DEVICE);
-		if (!nr_sgs || nr_sgs > 8) {
+		if (nr_sgs <= 0 || nr_sgs > 8) {
 			dev_err(ss->dev, "Invalid sg number %d\n", nr_sgs);
 			err = -EINVAL;
 			goto theend_iv;
 		}
 		nr_sgd = dma_map_sg(ss->dev, areq->dst, nsgd, DMA_FROM_DEVICE);
-		if (!nr_sgd || nr_sgd > 8) {
+		if (nr_sgd <= 0 || nr_sgd > 8) {
 			dev_err(ss->dev, "Invalid sg number %d\n", nr_sgd);
 			err = -EINVAL;
 			goto theend_sgs;
diff --git a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-hash.c b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-hash.c
index fcb8c41..36a82b2 100644
--- a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-hash.c
+++ b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-hash.c
@@ -527,7 +527,7 @@
 	rctx->method = ss->variant->alg_hash[algt->ss_algo_id];
 
 	nr_sgs = dma_map_sg(ss->dev, areq->src, sg_nents(areq->src), DMA_TO_DEVICE);
-	if (!nr_sgs || nr_sgs > MAX_SG) {
+	if (nr_sgs <= 0 || nr_sgs > MAX_SG) {
 		dev_err(ss->dev, "Invalid sg number %d\n", nr_sgs);
 		err = -EINVAL;
 		goto theend;