e1000: use disable_hardirq() for e1000_netpoll()

In commit 02cea395 ("genirq: Provide disable_hardirq()")
Peter introduced disable_hardirq() for netpoll, but it is forgotten
to use it for e1000.

This patch changes disable_irq() to disable_hardirq() for e1000.
Reported-by: Dave Jones <davej@codemonkey.org.uk>
Suggested-by: Sabrina Dubroca <sd@queasysnail.net>
Cc: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/intel/e1000/e1000_main.c

@@ -5255,7 +5255,7 @@ static void e1000_netpoll(struct net_device *netdev)
 {
 	struct e1000_adapter *adapter = netdev_priv(netdev);
 
-	disable_irq(adapter->pdev->irq);
+	if (disable_hardirq(adapter->pdev->irq))
 		e1000_intr(adapter->pdev->irq, netdev);
 	enable_irq(adapter->pdev->irq);
 }

drivers/net/ethernet/intel/e1000e/netdev.c

@@ -6755,12 +6755,12 @@ static void e1000_netpoll(struct net_device *netdev)
 		e1000_intr_msix(adapter->pdev->irq, netdev);
 		break;
 	case E1000E_INT_MODE_MSI:
-		disable_irq(adapter->pdev->irq);
+		if (disable_hardirq(adapter->pdev->irq))
 			e1000_intr_msi(adapter->pdev->irq, netdev);
 		enable_irq(adapter->pdev->irq);
 		break;
 	default:		/* E1000E_INT_MODE_LEGACY */
-		disable_irq(adapter->pdev->irq);
+		if (disable_hardirq(adapter->pdev->irq))
 			e1000_intr(adapter->pdev->irq, netdev);
 		enable_irq(adapter->pdev->irq);
 		break;