Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/gi…

…t/jkirsher/net Jeff Kirsher says: ==================== This series contains updates to e1000, ixgb and e1000e for Christoph. Christoph provides 3 patches to resolve missing dma_error_call's to provided Intel drivers which did not have this fix. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
mariux64 · Mar 27, 2013 · fe2d2c2 · fe2d2c2
2 parents 0fb031f + 37287fa
commit fe2d2c2
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Showing 3 changed files with 23 additions and 5 deletions.
diff --git a/drivers/net/ethernet/intel/e1000/e1000_ethtool.c b/drivers/net/ethernet/intel/e1000/e1000_ethtool.c
@@ -1053,6 +1053,10 @@ static int e1000_setup_desc_rings(struct e1000_adapter *adapter)
 		txdr->buffer_info[i].dma =
 			dma_map_single(&pdev->dev, skb->data, skb->len,
 				       DMA_TO_DEVICE);
+		if (dma_mapping_error(&pdev->dev, txdr->buffer_info[i].dma)) {
+			ret_val = 4;
+			goto err_nomem;
+		}
 		tx_desc->buffer_addr = cpu_to_le64(txdr->buffer_info[i].dma);
 		tx_desc->lower.data = cpu_to_le32(skb->len);
 		tx_desc->lower.data |= cpu_to_le32(E1000_TXD_CMD_EOP |
@@ -1069,15 +1073,15 @@ static int e1000_setup_desc_rings(struct e1000_adapter *adapter)
 	rxdr->buffer_info = kcalloc(rxdr->count, sizeof(struct e1000_buffer),
 				    GFP_KERNEL);
 	if (!rxdr->buffer_info) {
-		ret_val = 4;
+		ret_val = 5;
 		goto err_nomem;
 	}
 
 	rxdr->size = rxdr->count * sizeof(struct e1000_rx_desc);
 	rxdr->desc = dma_alloc_coherent(&pdev->dev, rxdr->size, &rxdr->dma,
 					GFP_KERNEL);
 	if (!rxdr->desc) {
-		ret_val = 5;
+		ret_val = 6;
 		goto err_nomem;
 	}
 	memset(rxdr->desc, 0, rxdr->size);
@@ -1101,7 +1105,7 @@ static int e1000_setup_desc_rings(struct e1000_adapter *adapter)
 
 		skb = alloc_skb(E1000_RXBUFFER_2048 + NET_IP_ALIGN, GFP_KERNEL);
 		if (!skb) {
-			ret_val = 6;
+			ret_val = 7;
 			goto err_nomem;
 		}
 		skb_reserve(skb, NET_IP_ALIGN);
@@ -1110,6 +1114,10 @@ static int e1000_setup_desc_rings(struct e1000_adapter *adapter)
 		rxdr->buffer_info[i].dma =
 			dma_map_single(&pdev->dev, skb->data,
 				       E1000_RXBUFFER_2048, DMA_FROM_DEVICE);
+		if (dma_mapping_error(&pdev->dev, rxdr->buffer_info[i].dma)) {
+			ret_val = 8;
+			goto err_nomem;
+		}
 		rx_desc->buffer_addr = cpu_to_le64(rxdr->buffer_info[i].dma);
 		memset(skb->data, 0x00, skb->len);
 	}

diff --git a/drivers/net/ethernet/intel/e1000e/netdev.c b/drivers/net/ethernet/intel/e1000e/netdev.c
@@ -848,11 +848,16 @@ static void e1000_alloc_jumbo_rx_buffers(struct e1000_ring *rx_ring,
 			}
 		}
 
-		if (!buffer_info->dma)
+		if (!buffer_info->dma) {
 			buffer_info->dma = dma_map_page(&pdev->dev,
 			                                buffer_info->page, 0,
 			                                PAGE_SIZE,
 							DMA_FROM_DEVICE);
+			if (dma_mapping_error(&pdev->dev, buffer_info->dma)) {
+				adapter->alloc_rx_buff_failed++;
+				break;
+			}
+		}
 
 		rx_desc = E1000_RX_DESC_EXT(*rx_ring, i);
 		rx_desc->read.buffer_addr = cpu_to_le64(buffer_info->dma);

diff --git a/drivers/net/ethernet/intel/ixgb/ixgb_main.c b/drivers/net/ethernet/intel/ixgb/ixgb_main.c
@@ -2159,6 +2159,10 @@ ixgb_alloc_rx_buffers(struct ixgb_adapter *adapter, int cleaned_count)
 		                                  skb->data,
 		                                  adapter->rx_buffer_len,
 						  DMA_FROM_DEVICE);
+		if (dma_mapping_error(&pdev->dev, buffer_info->dma)) {
+			adapter->alloc_rx_buff_failed++;
+			break;
+		}
 
 		rx_desc = IXGB_RX_DESC(*rx_ring, i);
 		rx_desc->buff_addr = cpu_to_le64(buffer_info->dma);
@@ -2168,7 +2172,8 @@ ixgb_alloc_rx_buffers(struct ixgb_adapter *adapter, int cleaned_count)
 		rx_desc->status = 0;
 
 
-		if (++i == rx_ring->count) i = 0;
+		if (++i == rx_ring->count)
+			i = 0;
 		buffer_info = &rx_ring->buffer_info[i];
 	}