igb: reset PHY after recovering from PHY power down
authorKoki Sanagi <sanagi.koki@jp.fujitsu.com>
Wed, 4 Jan 2012 20:23:38 +0000 (20:23 +0000)
committerDavid S. Miller <davem@davemloft.net>
Thu, 5 Jan 2012 18:12:04 +0000 (13:12 -0500)
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>
drivers/net/ethernet/intel/igb/igb_main.c

index fac71e21e0a48fd3e358113e881e49046b636b43..01e5e89ef959eb9317be078f2f3a0e50607d9abc 100644 (file)
@@ -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);
 }
 
 /**