Index: linux-2.6.23.17/drivers/net/arm/ixp4xx_eth.c
===================================================================
--- linux-2.6.23.17.orig/drivers/net/arm/ixp4xx_eth.c
+++ linux-2.6.23.17/drivers/net/arm/ixp4xx_eth.c
@@ -297,6 +297,27 @@ static int mdio_read(struct net_device *
 	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 @@ static void mdio_write(struct net_device
 {
 	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);