2 files changed, 16 insertions, 10 deletions

diff --git a/drivers/net/usb/usbnet.c b/drivers/net/usb/usbnet.c
index f9cd42d058b0..5b16d9a1269a 100644
--- a/drivers/net/usb/usbnet.c
+++ b/drivers/net/usb/usbnet.c
@@ -1252,20 +1252,23 @@ EXPORT_SYMBOL_GPL(usbnet_probe);
 
 /*-------------------------------------------------------------------------*/
 
-/* FIXME these suspend/resume methods assume non-CDC style
- * devices, with only one interface.
+/*
+ * suspend the whole driver as soon as the first interface is suspended
+ * resume only when the last interface is resumed
  */
 
 int usbnet_suspend (struct usb_interface *intf, pm_message_t message)
 {
         struct usbnet           *dev = usb_get_intfdata(intf);
 
-        /* accelerate emptying of the rx and queues, to avoid
-         * having everything error out.
-         */
-        netif_device_detach (dev->net);
-        (void) unlink_urbs (dev, &dev->rxq);
-        (void) unlink_urbs (dev, &dev->txq);
+        if (!dev->suspend_count++) {
+                /* accelerate emptying of the rx and queues, to avoid
+                 * having everything error out.
+                 */
+                netif_device_detach (dev->net);
+                (void) unlink_urbs (dev, &dev->rxq);
+                (void) unlink_urbs (dev, &dev->txq);
+        }
         return 0;
 }
 EXPORT_SYMBOL_GPL(usbnet_suspend);
@@ -1274,8 +1277,10 @@ int usbnet_resume (struct usb_interface *intf)
 {
         struct usbnet           *dev = usb_get_intfdata(intf);
 
-        netif_device_attach (dev->net);
-        tasklet_schedule (&dev->bh);
+        if (!--dev->suspend_count) {
+                netif_device_attach (dev->net);
+                tasklet_schedule (&dev->bh);
+        }
         return 0;
 }
 EXPORT_SYMBOL_GPL(usbnet_resume);
diff --git a/drivers/net/usb/usbnet.h b/drivers/net/usb/usbnet.h
index 82db5a8e528e..a3f8b9e7bc00 100644
--- a/drivers/net/usb/usbnet.h
+++ b/drivers/net/usb/usbnet.h
@@ -32,6 +32,7 @@ struct usbnet {
         const char              *driver_name;
         wait_queue_head_t       *wait;
         struct mutex            phy_mutex;
+        unsigned char           suspend_count;
 
         /* i/o info: pipes etc */
         unsigned                in, out;