From: florian <florian@3c298f89-4303-0410-b956-a3cf2f4a3e73>
Date: Mon, 3 Sep 2012 10:26:01 +0000 (+0000)
Subject: [mcs814x] nuport-mac: disable MAC RX and TX during interface close
X-Git-Url: https://git.archive.openwrt.org/?p=openwrt.git;a=commitdiff_plain;h=cfcb04f63cef7513c27777f3250ff833efd1146a

[mcs814x] nuport-mac: disable MAC RX and TX during interface close

Fixes sporadic crashes while reconfiguring the network interface.

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@33312 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 b14019d578..4a42086046 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
@@ -829,9 +829,14 @@ out_emac_clk:
 
 static int nuport_mac_close(struct net_device *dev)
 {
+	u32 reg;
 	struct nuport_mac_priv *priv = netdev_priv(dev);
 
 	spin_lock_irq(&priv->lock);
+	reg = nuport_mac_readl(CTRL_REG);
+	reg &= ~(RX_ENABLE | TX_ENABLE);
+	nuport_mac_writel(reg, CTRL_REG);
+
 	napi_disable(&priv->napi);
 	netif_stop_queue(dev);