diff --git a/[refs] b/[refs]
index 080189ce0043..60e0b0b865e1 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: c8458d59d424fcba2456d6cba5811ce01c3aedb9
+refs/heads/master: cf7d3c8e579a643ff81ff95d51babdaf4c55f5f4
diff --git a/trunk/drivers/usb/gadget/langwell_udc.c b/trunk/drivers/usb/gadget/langwell_udc.c
index 064306046702..b8ec954c0692 100644
--- a/trunk/drivers/usb/gadget/langwell_udc.c
+++ b/trunk/drivers/usb/gadget/langwell_udc.c
@@ -3391,6 +3391,11 @@ static int langwell_udc_suspend(struct pci_dev *pdev, pm_message_t state)
 	/* save PCI state */
 	pci_save_state(pdev);
 
+	spin_lock_irq(&dev->lock);
+	/* stop all usb activities */
+	stop_activity(dev, dev->driver);
+	spin_unlock_irq(&dev->lock);
+
 	/* free dTD dma_pool and dQH */
 	if (dev->dtd_pool)
 		dma_pool_destroy(dev->dtd_pool);