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 <vbars...@ru.mvista.com>
---
drivers/net/pasemi_mac_ethtool.c | 2 ++
1 file changed, 2 insertions(+)
--- linux-2.6.21.orig/drivers/net/pasemi_mac_ethtool.c 2008-11-06
18:10:38.000000000 +0300
+++ linux-2.6.21/drivers/net/pasemi_mac_ethtool.c 2008-11-19
19:24:28.000000000 +0300
@@ -71,6 +71,8 @@ pasemi_mac_ethtool_get_settings(struct n
struct pasemi_mac *mac = netdev_priv(netdev);
struct phy_device *phydev = mac->phydev;
+ if (!phydev)
+ return -EOPNOTSUPP;
return phy_ethtool_gset(phydev, cmd);
}
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