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nuport-mac: check dma_map_single address return values

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SVN-Revision: 33067
This commit is contained in:
Florian Fainelli 2012-08-08 21:51:04 +00:00
parent 798cc28d73
commit b77494fa2f
1 changed files with 4 additions and 0 deletions
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4
target/linux/mcs814x/files-3.3/drivers/net/ethernet/mcs8140/nuport_mac.c
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@ -256,6 +256,8 @@ static int nuport_mac_start_tx_dma(struct nuport_mac_priv *priv,
priv->tx_addr = dma_map_single(&priv->pdev->dev, skb->data, priv->tx_addr = dma_map_single(&priv->pdev->dev, skb->data,
skb->len, DMA_TO_DEVICE); skb->len, DMA_TO_DEVICE);
if (!priv->tx_addr)
return -ENOMEM;
/* enable enhanced mode */ /* enable enhanced mode */
nuport_mac_writel(TX_DMA_ENH_ENABLE, TX_DMA_ENH); nuport_mac_writel(TX_DMA_ENH_ENABLE, TX_DMA_ENH);
@ -297,6 +299,8 @@ static int nuport_mac_start_rx_dma(struct nuport_mac_priv *priv,
priv->rx_addr = dma_map_single(&priv->pdev->dev, skb->data, priv->rx_addr = dma_map_single(&priv->pdev->dev, skb->data,
RX_ALLOC_SIZE, DMA_FROM_DEVICE); RX_ALLOC_SIZE, DMA_FROM_DEVICE);
if (!priv->rx_addr)
return -ENOMEM;
nuport_mac_writel(priv->rx_addr, RX_BUFFER_ADDR); nuport_mac_writel(priv->rx_addr, RX_BUFFER_ADDR);
wmb(); wmb();