1 files changed, 38 insertions, 0 deletions

diff --git a/drivers/usb/net/zd1201.c b/drivers/usb/net/zd1201.c
index 341ae5f732dd..eb0bff535b3c 100644
--- a/drivers/usb/net/zd1201.c
+++ b/drivers/usb/net/zd1201.c
@@ -1884,12 +1884,50 @@ static void zd1201_disconnect(struct usb_interface *interface)
         kfree(zd);
 }
 
+#ifdef CONFIG_PM
+
+static int zd1201_suspend(struct usb_interface *interface,
+                           pm_message_t message)
+{
+        struct zd1201 *zd = usb_get_intfdata(interface);
+
+        netif_device_detach(zd->dev);
+
+        zd->was_enabled = zd->mac_enabled;
+
+        if (zd->was_enabled)
+                return zd1201_disable(zd);
+        else
+                return 0;
+}
+
+static int zd1201_resume(struct usb_interface *interface)
+{
+        struct zd1201 *zd = usb_get_intfdata(interface);
+
+        netif_device_attach(zd->dev);
+
+        if (zd->was_enabled)
+                return zd1201_enable(zd);
+        else
+                return 0;
+}
+
+#else
+
+#define zd1201_suspend NULL
+#define zd1201_resume  NULL
+
+#endif
+
 static struct usb_driver zd1201_usb = {
         .owner = THIS_MODULE,
         .name = "zd1201",
         .probe = zd1201_probe,
         .disconnect = zd1201_disconnect,
         .id_table = zd1201_table,
+        .suspend = zd1201_suspend,
+        .resume = zd1201_resume,
 };
 
 static int __init zd1201_init(void)