int dtpm_release_zone()

in dtpm.c [186:214]

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

int dtpm_release_zone(struct powercap_zone *pcz)
{
	struct dtpm *dtpm = to_dtpm(pcz);
	struct dtpm *parent = dtpm->parent;

	mutex_lock(&dtpm_lock);

	if (!list_empty(&dtpm->children)) {
		mutex_unlock(&dtpm_lock);
		return -EBUSY;
	}

	if (parent)
		list_del(&dtpm->sibling);

	__dtpm_sub_power(dtpm);

	mutex_unlock(&dtpm_lock);

	if (dtpm->ops)
		dtpm->ops->release(dtpm);

	if (root == dtpm)
		root = NULL;

	kfree(dtpm);

	return 0;
}