[PATCH 1/5] iommu: Replace uses of IOMMU_CAP_CACHE_COHERENCY with dev_is_dma_coherent()

[Christoph Hellwig]

On Wed, Apr 06, 2022 at 12:18:23PM -0300, Jason Gunthorpe wrote:
> > Oh, I didn't know about device_get_dma_attr()..

Which is completely broken for any non-OF, non-ACPI plaform.