> +int iommu_do_deferred_attach(struct device *dev,
> + struct iommu_domain *domain)
I'd remove the "do_" from the name, it doesn't really add any value.
> +{
> + const struct iommu_ops *ops = domain->ops;
> +
> + if (unlikely(ops->is_attach_deferred &&
> + ops->is_attach_deferred(domain, dev)))
> + return __iommu_attach_device(domain, dev);
> +
> + return 0;
Now that everyting is under the static key we don't really need to
bother with the unlikely micro optimization, do we?
> +extern int iommu_do_deferred_attach(struct device *dev,
> + struct iommu_domain *domain);
No need for the extern.
