Index: linux-2.6.30.1/drivers/net/au1000_eth.c
===================================================================
--- linux-2.6.30.1.orig/drivers/net/au1000_eth.c	2009-07-03 01:52:38.000000000 +0200
+++ linux-2.6.30.1/drivers/net/au1000_eth.c	2009-07-18 12:26:58.000000000 +0200
@@ -1036,10 +1036,14 @@
 	}
 }
 
+#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;
 
 	if (!aup->phy_dev) return -EINVAL; // PHY not controllable