ps2mouse_fifocnt
ps2mouse_fifocnt(sc->ps2mouse_sc) == 0) && sc->kbd.bcnt > 0)
if (ps2mouse_fifocnt(sc->ps2mouse_sc) > 0) {
if (ps2mouse_fifocnt(sc->ps2mouse_sc) == 0) {
if (ps2mouse_fifocnt(sc->ps2mouse_sc) == 0 && sc->kbd.bcnt == 0) {
if (ps2mouse_fifocnt(sc->ps2mouse_sc) > 0)
} else if (ps2mouse_fifocnt(sc->ps2mouse_sc) > 0 &&
int ps2mouse_fifocnt(struct ps2mouse_softc *sc);