e1000: call pci_save_state after pci_restore_state

This patch adds a call to pci_save_state() immediately after
the call to pci_restore_state(). Due to a change in the behavior
of pci_restore_state() it is necessary to call pci_save_state()
to keep the state_saved flag. This patch is based on a similar
patch for ixgbe.
Signed-off-by: NNicholas Nunley <nicholasx.d.nunley@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/e1000/e1000_main.c

@@ -847,6 +847,9 @@ static int __devinit e1000_probe(struct pci_dev *pdev,
 		goto err_pci_reg;
 
 	pci_set_master(pdev);
+	err = pci_save_state(pdev);
+	if (err)
+		goto err_alloc_etherdev;
 
 	err = -ENOMEM;
 	netdev = alloc_etherdev(sizeof(struct e1000_adapter));
@@ -4596,6 +4599,7 @@ static int e1000_resume(struct pci_dev *pdev)
 
 	pci_set_power_state(pdev, PCI_D0);
 	pci_restore_state(pdev);
+	pci_save_state(pdev);
 
 	if (adapter->need_ioport)
 		err = pci_enable_device(pdev);