e1000e: Use device_set_wakeup_enable

Since dev->power.should_wakeup bit is used by the PCI core to
decide whether the device should wake up the system from sleep
states, set/unset this bit whenever WOL is enabled/disabled using
e1000_set_wol(). Accordingly, use device_can_wakeup() for checking
if wake-up is supported by the device.

Signed-off-by: "Rafael J. Wysocki" <[e-mail]>
Signed-off-by: Jeff Kirsher <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

drivers/net/e1000e/ethtool.c

···
 	wol->supported = 0;
 	wol->wolopts = 0;
 
-	if (!(adapter->flags & FLAG_HAS_WOL))
+	if (!(adapter->flags & FLAG_HAS_WOL) ||
+	    !device_can_wakeup(&adapter->pdev->dev))
 		return;
 
 	wol->supported = WAKE_UCAST | WAKE_MCAST |
···
 	if (wol->wolopts & WAKE_MAGICSECURE)
 		return -EOPNOTSUPP;
 
-	if (!(adapter->flags & FLAG_HAS_WOL))
+	if (!(adapter->flags & FLAG_HAS_WOL) ||
+	    !device_can_wakeup(&adapter->pdev->dev))
 		return wol->wolopts ? -EOPNOTSUPP : 0;
 
 	/* these settings will always override what we currently have */
···
 		adapter->wol |= E1000_WUFC_LNKC;
 	if (wol->wolopts & WAKE_ARP)
 		adapter->wol |= E1000_WUFC_ARP;
+
+	device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol);
 
 	return 0;
 }

drivers/net/e1000e/netdev.c

···
 
 	/* initialize the wol settings based on the eeprom settings */
 	adapter->wol = adapter->eeprom_wol;
+	device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol);
 
 	/* reset the hardware with the new settings */
 	e1000e_reset(adapter);