--- a/drivers/usb/gadget/udc/dummy_hcd.c
+++ b/drivers/usb/gadget/udc/dummy_hcd.c
@@ -992,6 +992,7 @@ static int dummy_udc_start(struct usb_ga
 	dum->driver = driver;
 	dum->ints_enabled = 1;
 	spin_unlock_irq(&dum->lock);
+	dev_info(udc_dev(dum), "%s\n", __func__);
 
 	return 0;
 }
@@ -1001,6 +1002,7 @@ static int dummy_udc_stop(struct usb_gad
 	struct dummy_hcd	*dum_hcd = gadget_to_dummy_hcd(g);
 	struct dummy		*dum = dum_hcd->dum;
 
+	dev_info(udc_dev(dum), "%s\n", __func__);
 	spin_lock_irq(&dum->lock);
 	dum->ints_enabled = 0;
 	stop_activity(dum);
@@ -1277,6 +1279,8 @@ static int dummy_urb_enqueue(
 	} else if (unlikely(dum_hcd->udev != urb->dev))
 		dev_err(dummy_dev(dum_hcd), "usb_device address has changed!\n");
 
+	dev_info(dummy_dev(dum_hcd), "enqueue URB %p len %u\n", urb,
+			urb->transfer_buffer_length);
 	list_add_tail(&urbp->urbp_list, &dum_hcd->urbp_list);
 	urb->hcpriv = urbp;
 	if (!dum_hcd->next_frame_urbp)
@@ -1306,8 +1310,10 @@ static int dummy_urb_dequeue(struct usb_
 
 	rc = usb_hcd_check_unlink_urb(hcd, urb, status);
 	if (!rc && dum_hcd->rh_state != DUMMY_RH_RUNNING &&
-			!list_empty(&dum_hcd->urbp_list))
+			!list_empty(&dum_hcd->urbp_list)) {
+		dev_info(dummy_dev(dum_hcd), "dequeue URB %p\n", urb);
 		mod_timer(&dum_hcd->timer, jiffies);
+	}
 
 	spin_unlock_irqrestore(&dum_hcd->dum->lock, flags);
 	return rc;
@@ -1827,8 +1833,10 @@ restart:
 			continue;
 
 		/* Used up this frame's bandwidth? */
-		if (total <= 0)
+		if (total <= 0) {
+			dev_info(dummy_dev(dum_hcd), "total exceeded\n");
 			break;
+		}
 
 		/* find the gadget's ep for this request (if configured) */
 		address = usb_pipeendpoint (urb->pipe);
@@ -1965,6 +1973,7 @@ return_urb:
 
 		usb_hcd_unlink_urb_from_ep(dummy_hcd_to_hcd(dum_hcd), urb);
 		spin_unlock(&dum->lock);
+		dev_info(dummy_dev(dum_hcd), "giveback URB %p\n", urb);
 		usb_hcd_giveback_urb(dummy_hcd_to_hcd(dum_hcd), urb, status);
 		spin_lock(&dum->lock);
 
@@ -2329,7 +2338,7 @@ static int dummy_bus_suspend(struct usb_
 {
 	struct dummy_hcd *dum_hcd = hcd_to_dummy_hcd(hcd);
 
-	dev_dbg(&hcd->self.root_hub->dev, "%s\n", __func__);
+	dev_info(&hcd->self.root_hub->dev, "%s\n", __func__);
 
 	spin_lock_irq(&dum_hcd->dum->lock);
 	dum_hcd->rh_state = DUMMY_RH_SUSPENDED;
@@ -2344,7 +2353,7 @@ static int dummy_bus_resume(struct usb_h
 	struct dummy_hcd *dum_hcd = hcd_to_dummy_hcd(hcd);
 	int rc = 0;
 
-	dev_dbg(&hcd->self.root_hub->dev, "%s\n", __func__);
+	dev_info(&hcd->self.root_hub->dev, "%s\n", __func__);
 
 	spin_lock_irq(&dum_hcd->dum->lock);
 	if (!HCD_HW_ACCESSIBLE(hcd)) {
@@ -2431,6 +2440,7 @@ static DEVICE_ATTR_RO(urbs);
 
 static int dummy_start_ss(struct dummy_hcd *dum_hcd)
 {
+	dev_info(dummy_dev(dum_hcd), "%s\n", __func__);
 	timer_setup(&dum_hcd->timer, dummy_timer, 0);
 	dum_hcd->rh_state = DUMMY_RH_RUNNING;
 	dum_hcd->stream_en_ep = 0;
@@ -2459,6 +2469,7 @@ static int dummy_start(struct usb_hcd *h
 	if (!usb_hcd_is_primary_hcd(hcd))
 		return dummy_start_ss(dum_hcd);
 
+	dev_info(dummy_dev(dum_hcd), "%s\n", __func__);
 	spin_lock_init(&dum_hcd->dum->lock);
 	timer_setup(&dum_hcd->timer, dummy_timer, 0);
 	dum_hcd->rh_state = DUMMY_RH_RUNNING;