ixgbe: Fix usage of netif_*_all_queues() with netif_carrier_{off|on}()

netif_carrier_off() is sufficient to stop Tx into the driver.  Stopping the Tx
queues is redundant and unnecessary.  By the same token, netif_carrier_on()
will be sufficient to re-enable Tx, so waking the queues is unnecessary.
Signed-off-by: NPeter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ixgbe/ixgbe_main.c

@@ -1997,6 +1997,9 @@ static int ixgbe_up_complete(struct ixgbe_adapter *adapter)
 
 	ixgbe_irq_enable(adapter);
 
+	/* enable transmits */
+	netif_tx_start_all_queues(netdev);
+
 	/* bring the link up in the watchdog, this could race with our first
 	 * link up interrupt but shouldn't be a problem */
 	adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE;
@@ -3247,7 +3250,6 @@ static void ixgbe_watchdog_task(struct work_struct *work)
 			         (FLOW_TX ? "TX" : "None"))));
 
 			netif_carrier_on(netdev);
-			netif_tx_wake_all_queues(netdev);
 		} else {
 			/* Force detection of hung controller */
 			adapter->detect_tx_hung = true;
@@ -3258,7 +3260,6 @@ static void ixgbe_watchdog_task(struct work_struct *work)
 		if (netif_carrier_ok(netdev)) {
 			DPRINTK(LINK, INFO, "NIC Link is Down\n");
 			netif_carrier_off(netdev);
-			netif_tx_stop_all_queues(netdev);
 		}
 	}
 
@@ -3943,7 +3944,6 @@ static int __devinit ixgbe_probe(struct pci_dev *pdev,
 	}
 
 	netif_carrier_off(netdev);
-	netif_tx_stop_all_queues(netdev);
 
 	ixgbe_napi_add_all(adapter);