1 files changed, 12 insertions, 3 deletions

diff --git a/drivers/usb/musb/musb_host.c b/drivers/usb/musb/musb_host.c
index b47ca948bcf4..e32323938e98 100644
--- a/drivers/usb/musb/musb_host.c
+++ b/drivers/usb/musb/musb_host.c
@@ -432,7 +432,7 @@ musb_advance_schedule(struct musb *musb, struct urb *urb,
         else
                 qh = musb_giveback(qh, urb, urb->status);
 
-        if (qh && qh->is_ready && !list_empty(&qh->hep->urb_list)) {
+        if (qh != NULL && qh->is_ready) {
                 DBG(4, "... next ep%d %cX urb %p\n",
                                 hw_ep->epnum, is_in ? 'R' : 'T',
                                 next_urb(qh));
@@ -2038,9 +2038,9 @@ static int musb_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status)
                 goto done;
 
         /* Any URB not actively programmed into endpoint hardware can be
-         * immediately given back.  Such an URB must be at the head of its
+         * immediately given back; that's any URB not at the head of an
          * endpoint queue, unless someday we get real DMA queues.  And even
-         * then, it might not be known to the hardware...
+         * if it's at the head, it might not be known to the hardware...
          *
          * Otherwise abort current transfer, pending dma, etc.; urb->status
          * has already been updated.  This is a synchronous abort; it'd be
@@ -2079,6 +2079,15 @@ static int musb_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status)
                 qh->is_ready = 0;
                 __musb_giveback(musb, urb, 0);
                 qh->is_ready = ready;
+
+                /* If nothing else (usually musb_giveback) is using it
+                 * and its URB list has emptied, recycle this qh.
+                 */
+                if (ready && list_empty(&qh->hep->urb_list)) {
+                        qh->hep->hcpriv = NULL;
+                        list_del(&qh->ring);
+                        kfree(qh);
+                }
         } else
                 ret = musb_cleanup_urb(urb, qh, urb->pipe & USB_DIR_IN);
 done: