usb: dwc3: gadget: Clear wait flag on dequeue

commit a5c7682aaaa10e42928d73de1c9e1e02d2b14c2e upstream.

If an active transfer is dequeued, then the endpoint is freed to start a
new transfer. Make sure to clear the endpoint's transfer wait flag for
this case.

Fixes: e0d19563eb6c ("usb: dwc3: gadget: Wait for transfer completion")
Cc: stable@vger.kernel.org
Acked-by: Felipe Balbi <balbi@kernel.org>
Signed-off-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://lore.kernel.org/r/b81cd5b5281cfbfdadb002c4bcf5c9be7c017cfd.1609828485.git.Thinh.Nguyen@synopsys.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index 25f654b..ee44321 100644 (file)
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -1763,6 +1763,8 @@ static int dwc3_gadget_ep_dequeue(struct usb_ep *ep,
                        list_for_each_entry_safe(r, t, &dep->started_list, list)
                                dwc3_gadget_move_cancelled_request(r);
 
+                       dep->flags &= ~DWC3_EP_WAIT_TRANSFER_COMPLETE;
+
                        goto out;
                }
        }