diff --git a/drivers/net/ethernet/atheros/ag71xx/ag71xx_main.c b/drivers/net/ethernet/atheros/ag71xx/ag71xx_main.c
index a657a3d..0bb0db4 100755
--- a/drivers/net/ethernet/atheros/ag71xx/ag71xx_main.c
+++ b/drivers/net/ethernet/atheros/ag71xx/ag71xx_main.c
@@ -809,6 +809,36 @@
 	return NETDEV_TX_OK;
 }
 
+static int ag71xx_do_ioctl_switchport(struct net_device *dev, struct ifreq *ifr,
+				      int cmd)
+{
+	struct ag71xx *ag = netdev_priv(dev);
+	struct net_device *netdev = ag->dev;
+	struct mii_ioctl_data *mii_data = if_mii(ifr);
+
+	switch (cmd) {
+	case SIOCGMIIPHY:
+		mii_data->phy_id = netdev->dev_id;
+		/* fall through */
+
+	case SIOCGMIIREG:
+		mii_data->val_out = ag->mii_bus->read(ag->mii_bus, netdev->dev_id,
+						      mii_data->reg_num);
+		if (mii_data->val_out == 0xffff)
+			return -ENODEV;
+
+                break;
+	case SIOCSMIIREG:
+		ag->mii_bus->write(ag->mii_bus, netdev->dev_id, mii_data->reg_num,
+				   mii_data->val_in);
+                break;
+	default:
+		return -EOPNOTSUPP;
+	}
+
+	return 0;
+}
+
 static int ag71xx_do_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
 {
 	struct ag71xx *ag = netdev_priv(dev);
@@ -840,9 +870,9 @@
 	case SIOCGMIIREG:
 	case SIOCSMIIREG:
 		if (ag->phy_dev == NULL)
-			break;
-
-		return phy_mii_ioctl(ag->phy_dev, ifr, cmd);
+			return ag71xx_do_ioctl_switchport(dev, ifr, cmd);
+		else
+			return phy_mii_ioctl(ag->phy_dev, ifr, cmd);
 
 	default:
 		break;