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| author | Florian Fainelli <florian@openwrt.org> | 2012-08-08 21:51:04 +0000 |
|---|---|---|
| committer | Florian Fainelli <florian@openwrt.org> | 2012-08-08 21:51:04 +0000 |
| commit | b77494fa2f64003979e144d00cee92b261b3f892 (patch) | |
| tree | 689c0273af65aeb6a52df729796506cbb1dad006 /target/linux/mcs814x | |
| parent | 798cc28d73ab9da2c22ddccc77269a9fc2c7acbe (diff) | |
| download | mtk-20170518-b77494fa2f64003979e144d00cee92b261b3f892.zip mtk-20170518-b77494fa2f64003979e144d00cee92b261b3f892.tar.gz mtk-20170518-b77494fa2f64003979e144d00cee92b261b3f892.tar.bz2 | |
nuport-mac: check dma_map_single address return values
SVN-Revision: 33067
Diffstat (limited to 'target/linux/mcs814x')
| -rw-r--r-- | target/linux/mcs814x/files-3.3/drivers/net/ethernet/mcs8140/nuport_mac.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/target/linux/mcs814x/files-3.3/drivers/net/ethernet/mcs8140/nuport_mac.c b/target/linux/mcs814x/files-3.3/drivers/net/ethernet/mcs8140/nuport_mac.c index 794987f..38dbe1e 100644 --- a/target/linux/mcs814x/files-3.3/drivers/net/ethernet/mcs8140/nuport_mac.c +++ b/target/linux/mcs814x/files-3.3/drivers/net/ethernet/mcs8140/nuport_mac.c @@ -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(); |