Merge branch 'net-phy-fix-locking-issue'

Heiner Kallweit says:

====================
net: phy: fix locking issue

Russell pointed out that the locking used in phy_is_started() isn't
needed and misleading. This locking also contributes to a race fixed
with patch 2.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 14 deletions

diff --git a/include/linux/phy.h b/include/linux/phy.h
index ef20aeea10cc..127fcc9c3778 100644
--- a/include/linux/phy.h
+++ b/include/linux/phy.h
@@ -674,26 +674,13 @@ phy_lookup_setting(int speed, int duplex, const unsigned long *mask,
 size_t phy_speeds(unsigned int *speeds, size_t size,
 		  unsigned long *mask);
 
-static inline bool __phy_is_started(struct phy_device *phydev)
-{
-	WARN_ON(!mutex_is_locked(&phydev->lock));
-
-	return phydev->state >= PHY_UP;
-}
-
 /**
  * phy_is_started - Convenience function to check whether PHY is started
  * @phydev: The phy_device struct
  */
 static inline bool phy_is_started(struct phy_device *phydev)
 {
-	bool started;
-
-	mutex_lock(&phydev->lock);
-	started = __phy_is_started(phydev);
-	mutex_unlock(&phydev->lock);
-
-	return started;
+	return phydev->state >= PHY_UP;
 }
 
 void phy_resolve_aneg_linkmode(struct phy_device *phydev);