rmc_comm_unattach
rmc_comm_unattach(rcs, dip, instance, 0, 0, 0);
rmc_comm_unattach(rcs, dip, instance, 0, 0, 0);
rmc_comm_unattach(rcs, dip, instance, 0, 1, 1);
static void rmc_comm_unattach(struct rmc_comm_state *, dev_info_t *, int,
rmc_comm_unattach(rcs, dip, instance, 1, 1, 1);