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Commit c0ba4778 authored by Koki Sanagi's avatar Koki Sanagi Committed by Jeff Kirsher
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igb: display a warning message when SmartSpeed works 



Current igb driver doesn't tell nothing when Link Speed is downgraded due to
SmartSpeed.  As a result, users suspect that there is something wrong with
NIC.  If the cause of it is SmartSpeed, there is no means to replace NIC. This
patch make igb notify users that SmartSpeed worked.

Signed-off-by: default avatarKoki Sanagi <sanagi.koki@jp.fujitsu.com>
Tested-by: default avatarAaron Brown <aaron.f.brown@intel.com>
Signed-off-by: default avatarJeff Kirsher <jeffrey.t.kirsher@intel.com>
parent b09186d2

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

+6 −0
Original line number Diff line number Diff line
@@ -3901,6 +3901,7 @@ static void igb_watchdog_task(struct work_struct *work) 
						   struct igb_adapter,

						   watchdog_task);

	struct e1000_hw *hw = &adapter->hw;

	struct e1000_phy_info *phy = &hw->phy;

	struct net_device *netdev = adapter->netdev;

	u32 link;

	int i;
@@ -3929,6 +3930,11 @@ static void igb_watchdog_task(struct work_struct *work) 
			       (ctrl & E1000_CTRL_RFCE) ?  "RX" :

			       (ctrl & E1000_CTRL_TFCE) ?  "TX" : "None");



			/* check if SmartSpeed worked */

			igb_check_downshift(hw);

			if (phy->speed_downgraded)

				netdev_warn(netdev, "Link Speed was downgraded by SmartSpeed\n");



			/* check for thermal sensor event */

			if (igb_thermal_sensor_event(hw,

			    E1000_THSTAT_LINK_THROTTLE)) {