static void unregister_dca_providers()

in dca-core.c [77:110]

• 24 lines of code
• 2 McCabe index (conditional complexity)

static void unregister_dca_providers(void)
{
	struct dca_provider *dca, *_dca;
	struct list_head unregistered_providers;
	struct dca_domain *domain;
	unsigned long flags;

	blocking_notifier_call_chain(&dca_provider_chain,
				     DCA_PROVIDER_REMOVE, NULL);

	INIT_LIST_HEAD(&unregistered_providers);

	raw_spin_lock_irqsave(&dca_lock, flags);

	if (list_empty(&dca_domains)) {
		raw_spin_unlock_irqrestore(&dca_lock, flags);
		return;
	}

	/* at this point only one domain in the list is expected */
	domain = list_first_entry(&dca_domains, struct dca_domain, node);

	list_for_each_entry_safe(dca, _dca, &domain->dca_providers, node)
		list_move(&dca->node, &unregistered_providers);

	dca_free_domain(domain);

	raw_spin_unlock_irqrestore(&dca_lock, flags);

	list_for_each_entry_safe(dca, _dca, &unregistered_providers, node) {
		dca_sysfs_remove_provider(dca);
		list_del(&dca->node);
	}
}