sky2: Fix WOL regression

    
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
sky2_set_wol().
    
Remove an open-coded reference to the standard PCI PM registers that
is not used any more.
    
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 5 insertions, 14 deletions

diff --git a/drivers/net/sky2.c b/drivers/net/sky2.c
index 3805b9318be7..3813d15e2df7 100644
--- a/drivers/net/sky2.c
+++ b/drivers/net/sky2.c
@@ -3034,7 +3034,8 @@ static int sky2_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
         struct sky2_port *sky2 = netdev_priv(dev);
         struct sky2_hw *hw = sky2->hw;
 
-        if (wol->wolopts & ~sky2_wol_supported(sky2->hw))
+        if ((wol->wolopts & ~sky2_wol_supported(sky2->hw))
+            || !device_can_wakeup(&hw->pdev->dev))
                 return -EOPNOTSUPP;
 
         sky2->wol = wol->wolopts;
@@ -3045,6 +3046,8 @@ static int sky2_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
                 sky2_write32(hw, B0_CTST, sky2->wol
                              ? Y2_HW_WOL_ON : Y2_HW_WOL_OFF);
 
+        device_set_wakeup_enable(&hw->pdev->dev, sky2->wol);
+
         if (!netif_running(dev))
                 sky2_wol_init(sky2);
         return 0;
@@ -4179,18 +4182,6 @@ static int __devinit sky2_test_msi(struct sky2_hw *hw)
         return err;
 }
 
-static int __devinit pci_wake_enabled(struct pci_dev *dev)
-{
-        int pm  = pci_find_capability(dev, PCI_CAP_ID_PM);
-        u16 value;
-
-        if (!pm)
-                return 0;
-        if (pci_read_config_word(dev, pm + PCI_PM_CTRL, &value))
-                return 0;
-        return value & PCI_PM_CTRL_PME_ENABLE;
-}
-
 /*
  * Read and parse the first part of Vital Product Data
  */
@@ -4314,7 +4305,7 @@ static int __devinit sky2_probe(struct pci_dev *pdev,
                 }
         }
 
-        wol_default = pci_wake_enabled(pdev) ? WAKE_MAGIC : 0;
+        wol_default = device_may_wakeup(&pdev->dev) ? WAKE_MAGIC : 0;
 
         err = -ENOMEM;
         hw = kzalloc(sizeof(*hw), GFP_KERNEL);