static enum fan_action prioritize_fan_action()

in char/bbc_envctrl.c [290:318]

• 23 lines of code
• 9 McCabe index (conditional complexity)

static enum fan_action prioritize_fan_action(int which_fan)
{
	struct bbc_cpu_temperature *tp;
	enum fan_action decision = FAN_STATE_MAX;

	/* Basically, prioritize what the temperature sensors
	 * recommend we do, and perform that action on all the
	 * fans.
	 */
	list_for_each_entry(tp, &all_temps, glob_list) {
		if (tp->fan_todo[which_fan] == FAN_FULLBLAST) {
			decision = FAN_FULLBLAST;
			break;
		}
		if (tp->fan_todo[which_fan] == FAN_SAME &&
		    decision != FAN_FASTER)
			decision = FAN_SAME;
		else if (tp->fan_todo[which_fan] == FAN_FASTER)
			decision = FAN_FASTER;
		else if (decision != FAN_FASTER &&
			 decision != FAN_SAME &&
			 tp->fan_todo[which_fan] == FAN_SLOWER)
			decision = FAN_SLOWER;
	}
	if (decision == FAN_STATE_MAX)
		decision = FAN_SAME;

	return decision;
}