[PATCH v2] iommu: Streamline iommu_iova_to_phys()

[Christoph Hellwig]

On Thu, Jul 15, 2021 at 02:04:24PM +0100, Robin Murphy wrote:
> If people are going to insist on calling iommu_iova_to_phys()
> pointlessly and expecting it to work,

Maybe we need to fix that?