xhci: rework cycle bit checking for new dequeue pointers

[deliverable/linux.git] / drivers / usb / host / xhci.c

diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index b6f21175b872fd0d300968a55e2750e0fd9c69c5..c020b094fe7d952d91f1f977a02d35de52dff451 100644 (file)
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -2880,6 +2880,9 @@ void xhci_cleanup_stalled_ring(struct xhci_hcd *xhci,
                        ep_index, ep->stopped_stream, ep->stopped_td,
                        &deq_state);
 
+       if (!deq_state.new_deq_ptr || !deq_state.new_deq_seg)
+               return;
+
        /* HW with the reset endpoint quirk will use the saved dequeue state to
         * issue a configure endpoint command later.
         */