Commit a95a0744 authored Jan 04, 2012 by Koki Sanagi Committed by David S. Miller Jan 05, 2012

igb: reset PHY after recovering from PHY power down



According to 82576_Datasheet.pdf, PHY setting is lost after PHY power down.
So resetting PHY is needed when recovering from PHY power down to set a default
setting to PHY register.
Owing to this lack, NIC doesn't link up in some rare situation.

Signed-off-by: Koki Sanagi <sanagi.koki@jp.fujitsu.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent 749ab2cd

drivers/net/ethernet/intel/igb/igb_main.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -1507,6 +1507,7 @@ void igb_power_up_link(struct igb_adapter *adapter)
		igb_power_up_phy_copper(&adapter->hw);
		else
		igb_power_up_serdes_link_82575(&adapter->hw);
		igb_reset_phy(&adapter->hw);
		}

		/**