static void mld_query_stop_work(struct inet6_dev *idev)
{
	spin_lock_bh(&idev->mc_query_lock);
	if (cancel_delayed_work(&idev->mc_query_work))
		__in6_dev_put(idev);
	spin_unlock_bh(&idev->mc_query_lock);
}
static void mld_query_stop_work(struct inet6_dev *idev)
{
	spin_lock_bh(&idev->mc_query_lock);
	if (cancel_delayed_work(&idev->mc_query_work))
		__in6_dev_put(idev);
	spin_unlock_bh(&idev->mc_query_lock);
}