BDC_EP_STALL
if (!(ep->flags & BDC_EP_STALL)) {
if ((ep->flags & BDC_EP_STALL) || (ep->flags & BDC_EP_STOP))
if (ep->flags & BDC_EP_STALL)
if (ep->flags & BDC_EP_STALL) {
if (ep->flags & BDC_EP_STALL) {
ep->flags |= BDC_EP_STALL;
ep->flags &= ~BDC_EP_STALL;