1 files changed, 6 insertions, 4 deletions

diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c
index 67f25ac29025..b15b31ca2618 100644
--- a/drivers/net/phy/phy_device.c
+++ b/drivers/net/phy/phy_device.c
@@ -135,7 +135,9 @@ static int mdio_bus_phy_resume(struct device *dev)
         if (!mdio_bus_phy_may_suspend(phydev))
                 goto no_resume;
 
+        mutex_lock(&phydev->lock);
         ret = phy_resume(phydev);
+        mutex_unlock(&phydev->lock);
         if (ret < 0)
                 return ret;
 
@@ -1026,7 +1028,9 @@ int phy_attach_direct(struct net_device *dev, struct phy_device *phydev,
         if (err)
                 goto error;
 
+        mutex_lock(&phydev->lock);
         phy_resume(phydev);
+        mutex_unlock(&phydev->lock);
         phy_led_triggers_register(phydev);
 
         return err;
@@ -1157,6 +1161,8 @@ int phy_resume(struct phy_device *phydev)
         struct phy_driver *phydrv = to_phy_driver(phydev->mdio.dev.driver);
         int ret = 0;
 
+        WARN_ON(!mutex_is_locked(&phydev->lock));
+
         if (phydev->drv && phydrv->resume)
                 ret = phydrv->resume(phydev);
 
@@ -1639,13 +1645,9 @@ int genphy_resume(struct phy_device *phydev)
 {
         int value;
 
-        mutex_lock(&phydev->lock);
-
         value = phy_read(phydev, MII_BMCR);
         phy_write(phydev, MII_BMCR, value & ~BMCR_PDOWN);
 
-        mutex_unlock(&phydev->lock);
-
         return 0;
 }
 EXPORT_SYMBOL(genphy_resume);