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pasemi_mac: ethtool get settings fix

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Not all pasemi mac interfaces can have a phy attached.
For example, XAUI has no phy and phydev is NULL for it.
In this case ethtool get settings causes kernel crash.
Fix it by returning -EOPNOTSUPP if there's no PHY attached.

Signed-off-by: Valentine Barshak <vbarshak@ru.mvista.com>
Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Valentine Barshak 2009-10-05 03:27:56 +00:00 committed by David S. Miller
parent 6e43650cee
commit 49682864b0
1 changed files with 3 additions and 0 deletions
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3
drivers/net/pasemi_mac_ethtool.c
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@ -71,6 +71,9 @@ pasemi_mac_ethtool_get_settings(struct net_device *netdev,
struct pasemi_mac *mac = netdev_priv(netdev);
struct phy_device *phydev = mac->phydev;
if (!phydev)
return -EOPNOTSUPP;
return phy_ethtool_gset(phydev, cmd);
}