PXF_QUEUE
if ((si->si_hwflags & PXF_QUEUE) != 0 && (state & STIC_INT_P) != 0) {
if ((si->si_hwflags & PXF_QUEUE) != 0 && (state & STIC_INT_P_EN) == 0)
(si->si_hwflags & PXF_QUEUE) != 0) {
si->si_hwflags |= PXF_QUEUE;
si->si_hwflags &= ~PXF_QUEUE;