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authorDavid S. Miller <davem@davemloft.net>2009-12-02 09:13:38 +0300
committerDavid S. Miller <davem@davemloft.net>2009-12-02 09:13:38 +0300
commitff9c38bba37937adb909cceb2a6521f2e92e17c6 (patch)
tree93bd6152d9fa28348be99ef1c788040cc7b7a94d /drivers/net/smsc9420.c
parent65c0cfafce9575319fb6f70080fbe226e5617e3b (diff)
parentb2722b1c3a893ec6021508da15b32282ec79f4da (diff)
downloadlinux-ff9c38bba37937adb909cceb2a6521f2e92e17c6.tar.xz
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts: net/mac80211/ht.c
Diffstat (limited to 'drivers/net/smsc9420.c')
-rw-r--r--drivers/net/smsc9420.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/net/smsc9420.c b/drivers/net/smsc9420.c
index 92e2bbe6b49b..12f0f5d74e3c 100644
--- 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);
}