static int devfreq_passive_event_handler()

in governor_passive.c [134:164]

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

static int devfreq_passive_event_handler(struct devfreq *devfreq,
				unsigned int event, void *data)
{
	struct devfreq_passive_data *p_data
			= (struct devfreq_passive_data *)devfreq->data;
	struct devfreq *parent = (struct devfreq *)p_data->parent;
	struct notifier_block *nb = &p_data->nb;
	int ret = 0;

	if (!parent)
		return -EPROBE_DEFER;

	switch (event) {
	case DEVFREQ_GOV_START:
		if (!p_data->this)
			p_data->this = devfreq;

		nb->notifier_call = devfreq_passive_notifier_call;
		ret = devfreq_register_notifier(parent, nb,
					DEVFREQ_TRANSITION_NOTIFIER);
		break;
	case DEVFREQ_GOV_STOP:
		WARN_ON(devfreq_unregister_notifier(parent, nb,
					DEVFREQ_TRANSITION_NOTIFIER));
		break;
	default:
		break;
	}

	return ret;
}