e100: adapt to the reworked PCI PM

Adapt the e100 driver to the reworked PCI PM

* Use the observation that it is sufficient to call pci_enable_wake()
  once, unless it fails

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Tested-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Acked-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: Jeff Garzik <jeff@garzik.org>
Cc: Frans Pop <elendil@planet.nl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

1 files changed, 10 insertions, 6 deletions

diff --git a/drivers/net/e100.c b/drivers/net/e100.c
index bb4b6e285245..084127fe0813 100644
--- a/drivers/net/e100.c
+++ b/drivers/net/e100.c
@@ -2322,7 +2322,8 @@ static int e100_set_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
 {
         struct nic *nic = netdev_priv(netdev);
 
-        if(wol->wolopts != WAKE_MAGIC && wol->wolopts != 0)
+        if ((wol->wolopts && wol->wolopts != WAKE_MAGIC) ||
+            !device_can_wakeup(&nic->pdev->dev))
                 return -EOPNOTSUPP;
 
         if(wol->wolopts)
@@ -2330,6 +2331,8 @@ static int e100_set_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
         else
                 nic->flags &= ~wol_magic;
 
+        device_set_wakeup_enable(&nic->pdev->dev, wol->wolopts);
+
         e100_exec_cb(nic, NULL, e100_configure);
 
         return 0;
@@ -2733,8 +2736,10 @@ static int __devinit e100_probe(struct pci_dev *pdev,
 
         /* Wol magic packet can be enabled from eeprom */
         if((nic->mac >= mac_82558_D101_A4) &&
-           (nic->eeprom[eeprom_id] & eeprom_id_wol))
+           (nic->eeprom[eeprom_id] & eeprom_id_wol)) {
                 nic->flags |= wol_magic;
+                device_set_wakeup_enable(&pdev->dev, true);
+        }
 
         /* ack any pending wake events, disable PME */
         pci_pme_active(pdev, false);
@@ -2793,11 +2798,10 @@ static int e100_suspend(struct pci_dev *pdev, pm_message_t state)
         pci_save_state(pdev);
 
         if ((nic->flags & wol_magic) | e100_asf(nic)) {
-                pci_enable_wake(pdev, PCI_D3hot, 1);
-                pci_enable_wake(pdev, PCI_D3cold, 1);
+                if (pci_enable_wake(pdev, PCI_D3cold, true))
+                        pci_enable_wake(pdev, PCI_D3hot, true);
         } else {
-                pci_enable_wake(pdev, PCI_D3hot, 0);
-                pci_enable_wake(pdev, PCI_D3cold, 0);
+                pci_enable_wake(pdev, PCI_D3hot, false);
         }
 
         pci_disable_device(pdev);