mv643xx-eth: use an unique MDIO bus name.

Signed-off-by: Florian Fainelli <florian@openwrt.org>
Acked-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ethernet/marvell/mv643xx_eth.c b/drivers/net/ethernet/marvell/mv643xx_eth.c
index 80aab4e..9c049d2 100644
--- a/drivers/net/ethernet/marvell/mv643xx_eth.c
+++ b/drivers/net/ethernet/marvell/mv643xx_eth.c
@@ -2613,7 +2613,8 @@
 		msp->smi_bus->name = "mv643xx_eth smi";
 		msp->smi_bus->read = smi_bus_read;
 		msp->smi_bus->write = smi_bus_write,
-		snprintf(msp->smi_bus->id, MII_BUS_ID_SIZE, "%d", pdev->id);
+		snprintf(msp->smi_bus->id, MII_BUS_ID_SIZE, "%s-%d",
+			pdev->name, pdev->id);
 		msp->smi_bus->parent = &pdev->dev;
 		msp->smi_bus->phy_mask = 0xffffffff;
 		if (mdiobus_register(msp->smi_bus) < 0)