[net-next,04/11] igb: reset PHY after recovering from PHY power down

Submitted by Jeff Kirsher on Jan. 3, 2012, 7:19 p.m.


Message ID 1325618356-2655-5-git-send-email-jeffrey.t.kirsher@intel.com
State Changes Requested
Delegated to: David Miller
Headers show

Commit Message

Jeff Kirsher Jan. 3, 2012, 7:19 p.m.
From: Koki Sanagi <sanagi.koki@jp.fujitsu.com>

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>
 drivers/net/ethernet/intel/igb/igb_main.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

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diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c
index fac71e2..01e5e89 100644
--- a/drivers/net/ethernet/intel/igb/igb_main.c
+++ b/drivers/net/ethernet/intel/igb/igb_main.c
@@ -1507,6 +1507,7 @@  void igb_power_up_link(struct igb_adapter *adapter)
+	igb_reset_phy(&adapter->hw);