XHCI_TRB_CYCLE
ring->toggle = XHCI_TRB_CYCLE;
XHCI_TRB_CYCLE);
if (ring->toggle != (letoh32(trb->trb_flags) & XHCI_TRB_CYCLE))
lnk->trb_flags ^= htole32(XHCI_TRB_CYCLE);
trb0->trb_flags ^= htole32(XHCI_TRB_CYCLE);
trb0->trb_flags ^= htole32(XHCI_TRB_CYCLE);
trb0->trb_flags ^= htole32(XHCI_TRB_CYCLE);