diff --git a/drivers/net/phy/mdio_bus.c b/drivers/net/phy/mdio_bus.c
index fc4aee9..fc2f0e6 100644
--- a/drivers/net/phy/mdio_bus.c
+++ b/drivers/net/phy/mdio_bus.c
@@ -131,7 +131,8 @@
 	struct phy_device *phydev = to_phy_device(dev);
 	struct phy_driver *phydrv = to_phy_driver(drv);
 
-	return (phydrv->phy_id == (phydev->phy_id & phydrv->phy_id_mask));
+	return ((phydrv->phy_id & phydrv->phy_id_mask) ==
+		(phydev->phy_id & phydrv->phy_id_mask));
 }
 
 /* Suspend and resume.  Copied from platform_suspend and