1 files changed, 27 insertions, 12 deletions

diff --git a/drivers/net/phy/mdio_bus.c b/drivers/net/phy/mdio_bus.c
index 536bda1f428b..11adf6ed4628 100644
--- a/drivers/net/phy/mdio_bus.c
+++ b/drivers/net/phy/mdio_bus.c
@@ -63,7 +63,9 @@ EXPORT_SYMBOL(mdiobus_alloc);
 static void mdiobus_release(struct device *d)
 {
 	struct mii_bus *bus = to_mii_bus(d);
-	BUG_ON(bus->state != MDIOBUS_RELEASED);
+	BUG_ON(bus->state != MDIOBUS_RELEASED &&
+	       /* for compatibility with error handling in drivers */
+	       bus->state != MDIOBUS_ALLOCATED);
 	kfree(bus);
 }
 
@@ -83,8 +85,7 @@ static struct class mdio_bus_class = {
  */
 int mdiobus_register(struct mii_bus *bus)
 {
-	int i;
-	int err = 0;
+	int i, err;
 
 	if (NULL == bus || NULL == bus->name ||
 			NULL == bus->read ||
@@ -97,7 +98,7 @@ int mdiobus_register(struct mii_bus *bus)
 	bus->dev.parent = bus->parent;
 	bus->dev.class = &mdio_bus_class;
 	bus->dev.groups = NULL;
-	memcpy(bus->dev.bus_id, bus->id, MII_BUS_ID_SIZE);
+	dev_set_name(&bus->dev, bus->id);
 
 	err = device_register(&bus->dev);
 	if (err) {
@@ -105,8 +106,6 @@ int mdiobus_register(struct mii_bus *bus)
 		return -EINVAL;
 	}
 
-	bus->state = MDIOBUS_REGISTERED;
-
 	mutex_init(&bus->mdio_lock);
 
 	if (bus->reset)
@@ -118,13 +117,23 @@ int mdiobus_register(struct mii_bus *bus)
 			struct phy_device *phydev;
 
 			phydev = mdiobus_scan(bus, i);
-			if (IS_ERR(phydev))
+			if (IS_ERR(phydev)) {
 				err = PTR_ERR(phydev);
+				goto error;
+			}
 		}
 	}
 
+	bus->state = MDIOBUS_REGISTERED;
 	pr_info("%s: probed\n", bus->name);
+	return 0;
 
+error:
+	while (--i >= 0) {
+		if (bus->phy_map[i])
+			device_unregister(&bus->phy_map[i]->dev);
+	}
+	device_del(&bus->dev);
 	return err;
 }
 EXPORT_SYMBOL(mdiobus_register);
@@ -191,7 +200,7 @@ struct phy_device *mdiobus_scan(struct mii_bus *bus, int addr)
 
 	phydev->dev.parent = bus->parent;
 	phydev->dev.bus = &mdio_bus_type;
-	snprintf(phydev->dev.bus_id, BUS_ID_SIZE, PHY_ID_FMT, bus->id, addr);
+	dev_set_name(&phydev->dev, PHY_ID_FMT, bus->id, addr);
 
 	phydev->bus = bus;
 
@@ -284,9 +293,12 @@ static int mdio_bus_suspend(struct device * dev, pm_message_t state)
 {
 	int ret = 0;
 	struct device_driver *drv = dev->driver;
+	struct phy_driver *phydrv = to_phy_driver(drv);
+	struct phy_device *phydev = to_phy_device(dev);
 
-	if (drv && drv->suspend)
-		ret = drv->suspend(dev, state);
+	if ((!device_may_wakeup(phydev->dev.parent)) &&
+		(phydrv && phydrv->suspend))
+			ret = phydrv->suspend(phydev);
 
 	return ret;
 }
@@ -295,9 +307,12 @@ static int mdio_bus_resume(struct device * dev)
 {
 	int ret = 0;
 	struct device_driver *drv = dev->driver;
+	struct phy_driver *phydrv = to_phy_driver(drv);
+	struct phy_device *phydev = to_phy_device(dev);
 
-	if (drv && drv->resume)
-		ret = drv->resume(dev);
+	if ((!device_may_wakeup(phydev->dev.parent)) &&
+		(phydrv && phydrv->resume))
+		ret = phydrv->resume(phydev);
 
 	return ret;
 }