From: Florian Fainelli <florian@openwrt.org>
Date: Wed, 8 Aug 2012 21:51:09 +0000 (+0000)
Subject: nuport-mac: unmap the DMA buffer when closing device
X-Git-Tag: reboot~13187
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=35351a28b9d700fe890fd3cdefd8b82b3343b5e3;p=openwrt%2Fstaging%2Fchunkeey.git

nuport-mac: unmap the DMA buffer when closing device

SVN-Revision: 33068
---

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 38dbe1ee7d..ebf95a6533 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
@@ -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)