--- /dev/null
+--- a/drivers/net/ethernet/amd/au1000_eth.c
++++ b/drivers/net/ethernet/amd/au1000_eth.c
+@@ -1113,10 +1113,14 @@ static void au1000_multicast_list(struct
+ writel(reg, &aup->mac->control);
+ }
+
++#define AU1000_KNOWN_PHY_IOCTLS (SIOCGMIIPHY & 0xfff0)
+ static int au1000_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
+ {
+ struct au1000_private *aup = netdev_priv(dev);
+
++ if((cmd & AU1000_KNOWN_PHY_IOCTLS) != AU1000_KNOWN_PHY_IOCTLS)
++ return -EINVAL;
++
+ if (!netif_running(dev))
+ return -EINVAL;