nuport-mac: check dma_map_single address return values

SVN-Revision: 33067
lede-17.01
Florian Fainelli 2012-08-08 21:51:04 +00:00
parent 798cc28d73
commit b77494fa2f
1 changed files with 4 additions and 0 deletions

View File

@ -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,
skb->len, DMA_TO_DEVICE);
if (!priv->tx_addr)
return -ENOMEM;
/* enable enhanced mode */
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,
RX_ALLOC_SIZE, DMA_FROM_DEVICE);
if (!priv->rx_addr)
return -ENOMEM;
nuport_mac_writel(priv->rx_addr, RX_BUFFER_ADDR);
wmb();