net: phy: make phy_error() report which PHY has failed

phy_error() is called from phy_interrupt() or phy_state_machine(), and
uses WARN_ON() to print a backtrace. The backtrace is not useful when
reporting a PHY error.

However, a system may contain multiple ethernet PHYs, and phy_error()
gives no clue which one caused the problem.

Replace WARN_ON() with a call to phydev_err() so that we can see which
PHY had an error, and also inform the user that we are halting the PHY.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c
index a25e77a4ba52..369243a8c399 100644
--- a/drivers/net/phy/phy.c
+++ b/drivers/net/phy/phy.c
@@ -912,7 +912,7 @@ void phy_stop_machine(struct phy_device *phydev)
  */
 void phy_error(struct phy_device *phydev)
 {
-	WARN_ON(1);
+	phydev_err(phydev, "Error detected, halting PHY\n");
 
 	mutex_lock(&phydev->lock);
 	phydev->state = PHY_HALTED;