ACPM_SEQNUM_MAX
DECLARE_BITMAP(bitmap_seqnum, ACPM_SEQNUM_MAX - 1);
struct acpm_rx_data rx_data[ACPM_SEQNUM_MAX];
if (++achan->seqnum == ACPM_SEQNUM_MAX)
for (i = 0; i < ACPM_SEQNUM_MAX; i++) {