void cpuidle_driver_state_disabled()

in driver.c [357:387]

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

void cpuidle_driver_state_disabled(struct cpuidle_driver *drv, int idx,
				 bool disable)
{
	unsigned int cpu;

	mutex_lock(&cpuidle_lock);

	spin_lock(&cpuidle_driver_lock);

	if (!drv->cpumask) {
		drv->states[idx].flags |= CPUIDLE_FLAG_UNUSABLE;
		goto unlock;
	}

	for_each_cpu(cpu, drv->cpumask) {
		struct cpuidle_device *dev = per_cpu(cpuidle_devices, cpu);

		if (!dev)
			continue;

		if (disable)
			dev->states_usage[idx].disable |= CPUIDLE_STATE_DISABLED_BY_DRIVER;
		else
			dev->states_usage[idx].disable &= ~CPUIDLE_STATE_DISABLED_BY_DRIVER;
	}

unlock:
	spin_unlock(&cpuidle_driver_lock);

	mutex_unlock(&cpuidle_lock);
}