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

This patch decreases dev->suspend_count in the -EBUSY failure path
of usbnet_suspend. Without the change, the later runtime suspend
will do nothing except for increasing dev->suspend_count.

Signed-off-by: Ming Lei <ming.lei@canonical.com>
Acked-by: Oliver Neukum <oneukum@suse.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/usb/usbnet.c b/drivers/net/usb/usbnet.c
index 815493c..1e46f69 100644 (file)
--- 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 {