sundance: Add power management hooks

This patch to adds support for PM hooks into sundance driver

Signed-off-by: Denis Kirjanov <dkirjanov@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/sundance.c b/drivers/net/sundance.c
index 3fa949789b42d6f3984edde52c9325b705563bda..7dfdbee878e83d4b8019a1df9e1bcd7eb0175dbe 100644 (file)
--- a/drivers/net/sundance.c
+++ b/drivers/net/sundance.c
@@ -1757,11 +1757,59 @@ static void __devexit sundance_remove1 (struct pci_dev *pdev)
        }
 }
 
+#ifdef CONFIG_PM
+
+static int sundance_suspend(struct pci_dev *pci_dev, pm_message_t state)
+{
+       struct net_device *dev = pci_get_drvdata(pci_dev);
+
+       if (!netif_running(dev))
+               return 0;
+
+       netdev_close(dev);
+       netif_device_detach(dev);
+
+       pci_save_state(pci_dev);
+       pci_set_power_state(pci_dev, pci_choose_state(pci_dev, state));
+
+       return 0;
+}
+
+static int sundance_resume(struct pci_dev *pci_dev)
+{
+       struct net_device *dev = pci_get_drvdata(pci_dev);
+       int err = 0;
+
+       if (!netif_running(dev))
+               return 0;
+
+       pci_set_power_state(pci_dev, PCI_D0);
+       pci_restore_state(pci_dev);
+
+       err = netdev_open(dev);
+       if (err) {
+               printk(KERN_ERR "%s: Can't resume interface!\n",
+                               dev->name);
+               goto out;
+       }
+
+       netif_device_attach(dev);
+
+out:
+       return err;
+}
+
+#endif /* CONFIG_PM */
+
 static struct pci_driver sundance_driver = {
        .name           = DRV_NAME,
        .id_table       = sundance_pci_tbl,
        .probe          = sundance_probe1,
        .remove         = __devexit_p(sundance_remove1),
+#ifdef CONFIG_PM
+       .suspend        = sundance_suspend,
+       .resume         = sundance_resume,
+#endif /* CONFIG_PM */
 };
 
 static int __init sundance_init(void)