diff options
Diffstat (limited to 'drivers/net/ethernet/sis/sis900.c')
| -rw-r--r-- | drivers/net/ethernet/sis/sis900.c | 34 |
1 files changed, 30 insertions, 4 deletions
diff --git a/drivers/net/ethernet/sis/sis900.c b/drivers/net/ethernet/sis/sis900.c index e45829628d5f..eb4aea3fe793 100644 --- a/drivers/net/ethernet/sis/sis900.c +++ b/drivers/net/ethernet/sis/sis900.c @@ -1187,8 +1187,14 @@ sis900_init_rx_ring(struct net_device *net_dev) } sis_priv->rx_skbuff[i] = skb; sis_priv->rx_ring[i].cmdsts = RX_BUF_SIZE; - sis_priv->rx_ring[i].bufptr = pci_map_single(sis_priv->pci_dev, - skb->data, RX_BUF_SIZE, PCI_DMA_FROMDEVICE); + sis_priv->rx_ring[i].bufptr = pci_map_single(sis_priv->pci_dev, + skb->data, RX_BUF_SIZE, PCI_DMA_FROMDEVICE); + if (unlikely(pci_dma_mapping_error(sis_priv->pci_dev, + sis_priv->rx_ring[i].bufptr))) { + dev_kfree_skb(skb); + sis_priv->rx_skbuff[i] = NULL; + break; + } } sis_priv->dirty_rx = (unsigned int) (i - NUM_RX_DESC); @@ -1621,6 +1627,14 @@ sis900_start_xmit(struct sk_buff *skb, struct net_device *net_dev) /* set the transmit buffer descriptor and enable Transmit State Machine */ sis_priv->tx_ring[entry].bufptr = pci_map_single(sis_priv->pci_dev, skb->data, skb->len, PCI_DMA_TODEVICE); + if (unlikely(pci_dma_mapping_error(sis_priv->pci_dev, + sis_priv->tx_ring[entry].bufptr))) { + dev_kfree_skb(skb); + sis_priv->tx_skbuff[entry] = NULL; + net_dev->stats.tx_dropped++; + spin_unlock_irqrestore(&sis_priv->lock, flags); + return NETDEV_TX_OK; + } sis_priv->tx_ring[entry].cmdsts = (OWN | skb->len); sw32(cr, TxENA | sr32(cr)); @@ -1824,9 +1838,15 @@ static int sis900_rx(struct net_device *net_dev) refill_rx_ring: sis_priv->rx_skbuff[entry] = skb; sis_priv->rx_ring[entry].cmdsts = RX_BUF_SIZE; - sis_priv->rx_ring[entry].bufptr = + sis_priv->rx_ring[entry].bufptr = pci_map_single(sis_priv->pci_dev, skb->data, RX_BUF_SIZE, PCI_DMA_FROMDEVICE); + if (unlikely(pci_dma_mapping_error(sis_priv->pci_dev, + sis_priv->rx_ring[entry].bufptr))) { + dev_kfree_skb_irq(skb); + sis_priv->rx_skbuff[entry] = NULL; + break; + } } sis_priv->cur_rx++; entry = sis_priv->cur_rx % NUM_RX_DESC; @@ -1852,9 +1872,15 @@ refill_rx_ring: } sis_priv->rx_skbuff[entry] = skb; sis_priv->rx_ring[entry].cmdsts = RX_BUF_SIZE; - sis_priv->rx_ring[entry].bufptr = + sis_priv->rx_ring[entry].bufptr = pci_map_single(sis_priv->pci_dev, skb->data, RX_BUF_SIZE, PCI_DMA_FROMDEVICE); + if (unlikely(pci_dma_mapping_error(sis_priv->pci_dev, + sis_priv->rx_ring[entry].bufptr))) { + dev_kfree_skb_irq(skb); + sis_priv->rx_skbuff[entry] = NULL; + break; + } } } /* re-enable the potentially idle receive state matchine */ |