[mcs814x] nuport-mac: unmap the DMA buffer when closing device

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@33068 3c298f89-4303-0410-b956-a3cf2f4a3e73

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 38dbe1e..ebf95a6 100644 (file)
--- 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
@@ -688,6 +688,10 @@ static void nuport_mac_free_rx_ring(struct nuport_mac_priv *priv)
                dev_kfree_skb(priv->rx_skb[i]);
                priv->rx_skb[i] = NULL;
        }
+
+       if (priv->rx_addr)
+               dma_unmap_single(&priv->pdev->dev, priv->rx_addr, RX_ALLOC_SIZE,
+                               DMA_TO_DEVICE);
 }
 
 static void nuport_mac_read_mac_address(struct net_device *dev)