Re: [PATCH V5 3/5] iommu/dma-iommu: Handle deferred devices

[Christoph Hellwig]

> +static int handle_deferred_device(struct device *dev,
> +     struct iommu_domain *domain)

Nitick: we usually use double tab indents (or indents to after
the opening brace) for multi-line prototyped.

> +     if (!is_kdump_kernel())
> +             return 0;
> +
> +     if (unlikely(ops->is_attach_deferred &&
> +             ops->is_attach_deferred(domain, dev)))
> +             return iommu_attach_device(domain, dev);

And for multi-line conditionals we also use two-tab indents.