From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeff Kirsher Subject: [net-next 6/8] igb: reset PHY after recovering from PHY power down Date: Wed, 4 Jan 2012 22:23:38 -0800 Message-ID: <1325744620-5067-7-git-send-email-jeffrey.t.kirsher@intel.com> References: <1325744620-5067-1-git-send-email-jeffrey.t.kirsher@intel.com> Cc: Koki Sanagi , netdev@vger.kernel.org, gospo@redhat.com, sassmann@redhat.com, Jeff Kirsher To: davem@davemloft.net Return-path: Received: from mga11.intel.com ([192.55.52.93]:37346 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752180Ab2AEGXr (ORCPT ); Thu, 5 Jan 2012 01:23:47 -0500 In-Reply-To: <1325744620-5067-1-git-send-email-jeffrey.t.kirsher@intel.com> Sender: netdev-owner@vger.kernel.org List-ID: From: Koki Sanagi 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 Tested-by: Aaron Brown Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/igb/igb_main.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) 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_power_up_phy_copper(&adapter->hw); else igb_power_up_serdes_link_82575(&adapter->hw); + igb_reset_phy(&adapter->hw); } /** -- 1.7.7.5