void device_link_del(struct device_link *link)
{
	device_links_write_lock();
	device_link_put_kref(link);
	device_links_write_unlock();
}
void device_link_del(struct device_link *link)
{
	device_links_write_lock();
	device_link_put_kref(link);
	device_links_write_unlock();
}