--- /dev/null
+diff -Nur linux-2.6.23.16/drivers/net/arm/ixp4xx_eth.c linux-2.6.23.16-owrt/drivers/net/arm/ixp4xx_eth.c
+--- linux-2.6.23.16/drivers/net/arm/ixp4xx_eth.c 2008-02-15 18:18:02.000000000 +0100
++++ linux-2.6.23.16-owrt/drivers/net/arm/ixp4xx_eth.c 2008-02-18 12:14:42.000000000 +0100
+@@ -297,6 +297,27 @@
+ unsigned long flags;
+ u16 val;
+
++ /* For boards that use a switch chip (eg. Marvell 88E6060) */
++ if ( phy_id < 0 || phy_id > 31 ) {
++ switch (location) {
++ case MII_BMCR:
++ val = 0x3100;
++ break;
++ case MII_BMSR:
++ val = 0x406d;
++ break;
++ case MII_ADVERTISE:
++ val = 0x0101;
++ break;
++ case MII_LPA:
++ val = 0x4101;
++ break;
++ default:
++ val = 0;
++ break;
++ }
++ return val;
++ }
+ spin_lock_irqsave(&mdio_lock, flags);
+ val = mdio_cmd(dev, phy_id, location, 0, 0);
+ spin_unlock_irqrestore(&mdio_lock, flags);
+@@ -308,6 +329,9 @@
+ {
+ unsigned long flags;
+
++ if ( phy_id < 0 || phy_id > 31 ) {
++ return;
++ }
+ spin_lock_irqsave(&mdio_lock, flags);
+ mdio_cmd(dev, phy_id, location, 1, val);
+ spin_unlock_irqrestore(&mdio_lock, flags);