Merge branch 'sh_eth-dma-mapping-fixes'

Thomas Petazzoni says: ==================== net: sh_eth: DMA mapping API fixes Here are two patches that fix how the sh_eth driver is using the DMA mapping API: a bogus struct device is used in some places, or a NULL struct device is used. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
mariux64 · Dec 5, 2017 · a6cec1f · a6cec1f
2 parents c1d69de + 573500d
commit a6cec1f
Showing 1 changed file with 16 additions and 15 deletions.
diff --git a/drivers/net/ethernet/renesas/sh_eth.c b/drivers/net/ethernet/renesas/sh_eth.c
@@ -1149,7 +1149,8 @@ static int sh_eth_tx_free(struct net_device *ndev, bool sent_only)
 			   entry, le32_to_cpu(txdesc->status));
 		/* Free the original skb. */
 		if (mdp->tx_skbuff[entry]) {
-			dma_unmap_single(&ndev->dev, le32_to_cpu(txdesc->addr),
+			dma_unmap_single(&mdp->pdev->dev,
+					 le32_to_cpu(txdesc->addr),
 					 le32_to_cpu(txdesc->len) >> 16,
 					 DMA_TO_DEVICE);
 			dev_kfree_skb_irq(mdp->tx_skbuff[entry]);
@@ -1179,14 +1180,14 @@ static void sh_eth_ring_free(struct net_device *ndev)
 			if (mdp->rx_skbuff[i]) {
 				struct sh_eth_rxdesc *rxdesc = &mdp->rx_ring[i];
 
-				dma_unmap_single(&ndev->dev,
+				dma_unmap_single(&mdp->pdev->dev,
 						 le32_to_cpu(rxdesc->addr),
 						 ALIGN(mdp->rx_buf_sz, 32),
 						 DMA_FROM_DEVICE);
 			}
 		}
 		ringsize = sizeof(struct sh_eth_rxdesc) * mdp->num_rx_ring;
-		dma_free_coherent(NULL, ringsize, mdp->rx_ring,
+		dma_free_coherent(&mdp->pdev->dev, ringsize, mdp->rx_ring,
 				  mdp->rx_desc_dma);
 		mdp->rx_ring = NULL;
 	}
@@ -1203,7 +1204,7 @@ static void sh_eth_ring_free(struct net_device *ndev)
 		sh_eth_tx_free(ndev, false);
 
 		ringsize = sizeof(struct sh_eth_txdesc) * mdp->num_tx_ring;
-		dma_free_coherent(NULL, ringsize, mdp->tx_ring,
+		dma_free_coherent(&mdp->pdev->dev, ringsize, mdp->tx_ring,
 				  mdp->tx_desc_dma);
 		mdp->tx_ring = NULL;
 	}
@@ -1245,9 +1246,9 @@ static void sh_eth_ring_format(struct net_device *ndev)
 
 		/* The size of the buffer is a multiple of 32 bytes. */
 		buf_len = ALIGN(mdp->rx_buf_sz, 32);
-		dma_addr = dma_map_single(&ndev->dev, skb->data, buf_len,
+		dma_addr = dma_map_single(&mdp->pdev->dev, skb->data, buf_len,
 					  DMA_FROM_DEVICE);
-		if (dma_mapping_error(&ndev->dev, dma_addr)) {
+		if (dma_mapping_error(&mdp->pdev->dev, dma_addr)) {
 			kfree_skb(skb);
 			break;
 		}
@@ -1323,17 +1324,17 @@ static int sh_eth_ring_init(struct net_device *ndev)
 
 	/* Allocate all Rx descriptors. */
 	rx_ringsize = sizeof(struct sh_eth_rxdesc) * mdp->num_rx_ring;
-	mdp->rx_ring = dma_alloc_coherent(NULL, rx_ringsize, &mdp->rx_desc_dma,
-					  GFP_KERNEL);
+	mdp->rx_ring = dma_alloc_coherent(&mdp->pdev->dev, rx_ringsize,
+					  &mdp->rx_desc_dma, GFP_KERNEL);
 	if (!mdp->rx_ring)
 		goto ring_free;
 
 	mdp->dirty_rx = 0;
 
 	/* Allocate all Tx descriptors. */
 	tx_ringsize = sizeof(struct sh_eth_txdesc) * mdp->num_tx_ring;
-	mdp->tx_ring = dma_alloc_coherent(NULL, tx_ringsize, &mdp->tx_desc_dma,
-					  GFP_KERNEL);
+	mdp->tx_ring = dma_alloc_coherent(&mdp->pdev->dev, tx_ringsize,
+					  &mdp->tx_desc_dma, GFP_KERNEL);
 	if (!mdp->tx_ring)
 		goto ring_free;
 	return 0;
@@ -1527,7 +1528,7 @@ static int sh_eth_rx(struct net_device *ndev, u32 intr_status, int *quota)
 			mdp->rx_skbuff[entry] = NULL;
 			if (mdp->cd->rpadir)
 				skb_reserve(skb, NET_IP_ALIGN);
-			dma_unmap_single(&ndev->dev, dma_addr,
+			dma_unmap_single(&mdp->pdev->dev, dma_addr,
 					 ALIGN(mdp->rx_buf_sz, 32),
 					 DMA_FROM_DEVICE);
 			skb_put(skb, pkt_len);
@@ -1555,9 +1556,9 @@ static int sh_eth_rx(struct net_device *ndev, u32 intr_status, int *quota)
 			if (skb == NULL)
 				break;	/* Better luck next round. */
 			sh_eth_set_receive_align(skb);
-			dma_addr = dma_map_single(&ndev->dev, skb->data,
+			dma_addr = dma_map_single(&mdp->pdev->dev, skb->data,
 						  buf_len, DMA_FROM_DEVICE);
-			if (dma_mapping_error(&ndev->dev, dma_addr)) {
+			if (dma_mapping_error(&mdp->pdev->dev, dma_addr)) {
 				kfree_skb(skb);
 				break;
 			}
@@ -2441,9 +2442,9 @@ static int sh_eth_start_xmit(struct sk_buff *skb, struct net_device *ndev)
 	/* soft swap. */
 	if (!mdp->cd->hw_swap)
 		sh_eth_soft_swap(PTR_ALIGN(skb->data, 4), skb->len + 2);
-	dma_addr = dma_map_single(&ndev->dev, skb->data, skb->len,
+	dma_addr = dma_map_single(&mdp->pdev->dev, skb->data, skb->len,
 				  DMA_TO_DEVICE);
-	if (dma_mapping_error(&ndev->dev, dma_addr)) {
+	if (dma_mapping_error(&mdp->pdev->dev, dma_addr)) {
 		kfree_skb(skb);
 		return NETDEV_TX_OK;
 	}