diff --git a/include/miiphy.h b/include/miiphy.h
index 9b97d09f18..94bf0da24a 100644
--- a/include/miiphy.h
+++ b/include/miiphy.h
@@ -154,14 +154,14 @@ void dm_mdio_probe_devices(void);
 /**
  * dm_mdio_phy_connect - Wrapper over phy_connect for DM MDIO
  *
- * @dev: mdio dev
- * @addr: PHY address on MDIO bus
+ * @mdiodev: mdio device the PHY is accesible on
+ * @phyaddr: PHY address on MDIO bus
  * @ethdev: ethernet device to connect to the PHY
  * @interface: MAC-PHY protocol
  *
  * @return pointer to phy_device, or 0 on error
  */
-struct phy_device *dm_mdio_phy_connect(struct udevice *dev, int addr,
+struct phy_device *dm_mdio_phy_connect(struct udevice *mdiodev, int phyaddr,
 				       struct udevice *ethdev,
 				       phy_interface_t interface);
 
diff --git a/net/mdio-uclass.c b/net/mdio-uclass.c
index 6f922e80b6..7a5f1d6dcc 100644
--- a/net/mdio-uclass.c
+++ b/net/mdio-uclass.c
@@ -104,16 +104,16 @@ static int dm_mdio_pre_remove(struct udevice *dev)
 	return 0;
 }
 
-struct phy_device *dm_mdio_phy_connect(struct udevice *dev, int addr,
+struct phy_device *dm_mdio_phy_connect(struct udevice *mdiodev, int phyaddr,
 				       struct udevice *ethdev,
 				       phy_interface_t interface)
 {
-	struct mdio_perdev_priv *pdata = dev_get_uclass_priv(dev);
+	struct mdio_perdev_priv *pdata = dev_get_uclass_priv(mdiodev);
 
-	if (device_probe(dev))
-		return 0;
+	if (device_probe(mdiodev))
+		return NULL;
 
-	return phy_connect(pdata->mii_bus, addr, ethdev, interface);
+	return phy_connect(pdata->mii_bus, phyaddr, ethdev, interface);
 }
 
 UCLASS_DRIVER(mdio) = {