UHUB_IS_SINGLE_TT
UHUB_IS_SINGLE_TT(sc) ? "single" : "multiple",
UHUB_IS_SINGLE_TT(sc) ? "" : "s");
if (UHUB_IS_HIGH_SPEED(sc) && !UHUB_IS_SINGLE_TT(sc)) {
tts = kmem_alloc((UHUB_IS_SINGLE_TT(sc) ? 1 : nports) *
up->up_tt = &tts[UHUB_IS_SINGLE_TT(sc) ? 0 : p - 1];
(UHUB_IS_SINGLE_TT(sc) ? 1 : nports) *