static int idtcm_adjtime()

in ptp_clockmatrix.c [1863:1896]

• 28 lines of code
• 5 McCabe index (conditional complexity)

static int idtcm_adjtime(struct ptp_clock_info *ptp, s64 delta)
{
	struct idtcm_channel *channel = container_of(ptp, struct idtcm_channel, caps);
	struct idtcm *idtcm = channel->idtcm;
	struct timespec64 ts;
	enum scsr_tod_write_type_sel type;
	int err;

	if (channel->phase_pull_in == true)
		return 0;

	mutex_lock(idtcm->lock);

	if (abs(delta) < PHASE_PULL_IN_THRESHOLD_NS) {
		err = channel->do_phase_pull_in(channel, delta, 0);
	} else {
		if (delta >= 0) {
			ts = ns_to_timespec64(delta);
			type = SCSR_TOD_WR_TYPE_SEL_DELTA_PLUS;
		} else {
			ts = ns_to_timespec64(-delta);
			type = SCSR_TOD_WR_TYPE_SEL_DELTA_MINUS;
		}
		err = _idtcm_settime(channel, &ts, type);
	}

	mutex_unlock(idtcm->lock);

	if (err)
		dev_err(idtcm->dev,
			"Failed at line %d in %s!", __LINE__, __func__);

	return err;
}