Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6

[safe/jmp/linux-2.6] / drivers / net / smsc9420.c

diff --git a/drivers/net/smsc9420.c b/drivers/net/smsc9420.c
index 92e2bbe..12f0f5d 100644 (file)
--- a/drivers/net/smsc9420.c
+++ b/drivers/net/smsc9420.c
@@ -252,6 +252,9 @@ static int smsc9420_ethtool_get_settings(struct net_device *dev,
 {
        struct smsc9420_pdata *pd = netdev_priv(dev);
 
+       if (!pd->phy_dev)
+               return -ENODEV;
+
        cmd->maxtxpkt = 1;
        cmd->maxrxpkt = 1;
        return phy_ethtool_gset(pd->phy_dev, cmd);
@@ -262,6 +265,9 @@ static int smsc9420_ethtool_set_settings(struct net_device *dev,
 {
        struct smsc9420_pdata *pd = netdev_priv(dev);
 
+       if (!pd->phy_dev)
+               return -ENODEV;
+
        return phy_ethtool_sset(pd->phy_dev, cmd);
 }
 
@@ -290,6 +296,10 @@ static void smsc9420_ethtool_set_msglevel(struct net_device *netdev, u32 data)
 static int smsc9420_ethtool_nway_reset(struct net_device *netdev)
 {
        struct smsc9420_pdata *pd = netdev_priv(netdev);
+
+       if (!pd->phy_dev)
+               return -ENODEV;
+
        return phy_start_aneg(pd->phy_dev);
 }
 
@@ -312,6 +322,10 @@ smsc9420_ethtool_getregs(struct net_device *dev, struct ethtool_regs *regs,
        for (i = 0; i < 0x100; i += (sizeof(u32)))
                data[j++] = smsc9420_reg_read(pd, i);
 
+       // cannot read phy registers if the net device is down
+       if (!phy_dev)
+               return;
+
        for (i = 0; i <= 31; i++)
                data[j++] = smsc9420_mii_read(phy_dev->bus, phy_dev->addr, i);
 }