Index: usb-devel/drivers/usb/gadget/udc/dummy_hcd.c
===================================================================
--- usb-devel.orig/drivers/usb/gadget/udc/dummy_hcd.c
+++ usb-devel/drivers/usb/gadget/udc/dummy_hcd.c
@@ -1826,6 +1826,7 @@ static void dummy_timer(struct timer_lis
 			break;
 		dum->ep[i].already_seen = 0;
 	}
+	dev_info(dummy_dev(dum_hcd), "Timer handler\n");
 
 restart:
 	list_for_each_entry_safe(urbp, tmp, &dum_hcd->urbp_list, urbp_list) {
@@ -1835,6 +1836,9 @@ restart:
 		struct dummy_ep		*ep = NULL;
 		int			status = -EINPROGRESS;
 
+		dev_info(dummy_dev(dum_hcd), "urbp %p %x next_frame %p\n",
+				urbp, urbp->urb->pipe, dum_hcd->next_frame_urbp);
+
 		/* stop when we reach URBs queued after the timer interrupt */
 		if (urbp == dum_hcd->next_frame_urbp)
 			break;