mlx4_unregister_event_notifier
mlx4_unregister_event_notifier(dev, &ibdev->mlx_nb);
mlx4_unregister_event_notifier(dev, &mdev->mlx_nb);
EXPORT_SYMBOL(mlx4_unregister_event_notifier);
int mlx4_unregister_event_notifier(struct mlx4_dev *dev,