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>

1 files changed, 48 insertions, 0 deletions

diff --git a/drivers/net/sundance.c b/drivers/net/sundance.c
index 3fa949789b42..7dfdbee878e8 100644
--- 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)