e1000e: Fix for offline diag test failure at first call

Move link test call to later in the offline sequence, move the
restore settings block to afterwards and add another reset to ensure
the hardware is in a known state afterwards.

Signed-off-by: Carolyn Wyborny <carolyn.wyborny@intel.com>
Acked-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Jeff Pieper <jeffrey.e.pieper@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/e1000e/ethtool.c

@@ -1717,13 +1717,6 @@ static void e1000_diag_test(struct net_device *netdev,
 
 		e_info("offline testing starting\n");
 
-		/*
-		 * Link test performed before hardware reset so autoneg doesn't
-		 * interfere with test result
-		 */
-		if (e1000_link_test(adapter, &data[4]))
-			eth_test->flags |= ETH_TEST_FL_FAILED;
-
 		if (if_running)
 			/* indicate we're in test mode */
 			dev_close(netdev);
@@ -1747,15 +1740,19 @@ static void e1000_diag_test(struct net_device *netdev,
 		if (e1000_loopback_test(adapter, &data[3]))
 			eth_test->flags |= ETH_TEST_FL_FAILED;
 
+		/* force this routine to wait until autoneg complete/timeout */
+		adapter->hw.phy.autoneg_wait_to_complete = 1;
+		e1000e_reset(adapter);
+		adapter->hw.phy.autoneg_wait_to_complete = 0;
+
+		if (e1000_link_test(adapter, &data[4]))
+			eth_test->flags |= ETH_TEST_FL_FAILED;
+
 		/* restore speed, duplex, autoneg settings */
 		adapter->hw.phy.autoneg_advertised = autoneg_advertised;
 		adapter->hw.mac.forced_speed_duplex = forced_speed_duplex;
 		adapter->hw.mac.autoneg = autoneg;
-
-		/* force this routine to wait until autoneg complete/timeout */
-		adapter->hw.phy.autoneg_wait_to_complete = 1;
 		e1000e_reset(adapter);
-		adapter->hw.phy.autoneg_wait_to_complete = 0;
 
 		clear_bit(__E1000_TESTING, &adapter->state);
 		if (if_running)