usbnet: decrease suspend count if returning -EBUSY for runtime suspend

Ming Lei · davem330 · commit 5eeb3132eb4c · 2012-06-22T17:34:17.000-07:00
This patch decreases dev-&gt;suspend_count in the -EBUSY failure path
of usbnet_suspend. Without the change, the later runtime suspend
will do nothing except for increasing dev-&gt;suspend_count.

Signed-off-by: Ming Lei &lt;ming.lei@canonical.com&gt;
Acked-by: Oliver Neukum &lt;oneukum@suse.de&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
diff --git a/drivers/net/usb/usbnet.c b/drivers/net/usb/usbnet.c
@@ -1515,6 +1515,7 @@ int usbnet_suspend (struct usb_interface *intf, pm_message_t message)
 		spin_lock_irq(&dev->txq.lock);
 		/* don't autosuspend while transmitting */
 		if (dev->txq.qlen && PMSG_IS_AUTO(message)) {
+			dev->suspend_count--;
 			spin_unlock_irq(&dev->txq.lock);
 			return -EBUSY;
 		} else {
