--- linux-2.6.22.1.orig/drivers/net/au1000_eth.c	2007-07-24 18:43:25.527583520 +0200
+++ linux-2.6.22.1/drivers/net/au1000_eth.c	2007-07-24 23:07:00.388821102 +0200
@@ -1320,9 +1320,12 @@
 	}
 }
 
+#define AU1000_KNOWN_PHY_IOCTLS 		(SIOCGMIIPHY & 0xfff0)
 static int au1000_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
 {
 	struct au1000_private *aup = (struct au1000_private *)dev->priv;
+	if((cmd & AU1000_KNOWN_PHY_IOCTLS) != AU1000_KNOWN_PHY_IOCTLS)
+		return -EINVAL;
 
 	if (!netif_running(dev)) return -EINVAL;
 
