[net-next 5/9] igb: Workaround for global device reset problem on 82580.

From: Carolyn Wyborny <redacted>

Due to a hw errata, the global device reset doesn't always work on 82580
devices.  This patch works around the problem not trying to do a global
device reset on these devices.

Signed-off-by: Carolyn Wyborny <redacted>
Tested-by: Aaron Brown <redacted>
Signed-off-by: Jeff Kirsher <redacted>
---
 drivers/net/ethernet/intel/igb/e1000_82575.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/net/ethernet/intel/igb/e1000_82575.c b/drivers/net/ethernet/intel/igb/e1000_82575.c
index 8c12dbd..db40b68 100644
--- a/drivers/net/ethernet/intel/igb/e1000_82575.c
+++ b/drivers/net/ethernet/intel/igb/e1000_82575.c

@@ -1927,6 +1927,12 @@ static s32 igb_reset_hw_82580(struct e1000_hw *hw)
 
 	hw->dev_spec._82575.global_device_reset = false;
 
+	/* due to hw errata, global device reset doesn't always
+	 * work on 82580
+	 */
+	if (hw->mac.type == e1000_82580)
+		global_device_reset = false;
+
 	/* Get current control state. */
 	ctrl = rd32(E1000_CTRL);
 

-- 
1.7.11.7