ahc_is_paused
while (!ahc_is_paused(ahc))
if (ahc_is_paused(ahc)) {
if (ahc_is_paused(ahc)) {
while (ahc_is_paused(ahc) == 0)
IO_INLINE int ahc_is_paused(struct ahc_softc *ahc);
while (ahc_is_paused(ahc) == 0)