25 Aug
2020
25 Aug
'20
2:38 p.m.
On Mon, Aug 24, 2020 at 11:52 PM Christoph Hellwig hch@infradead.org wrote:
On Sat, Aug 22, 2020 at 10:52:54AM -0700, Rob Clark wrote:
From: Rob Clark robdclark@chromium.org
Now that it isn't causing problems to use dma_map/unmap, we can drop the hack of using dma_sync in certain cases.
Great to see! What did solve the problems?
should be 0e764a01015dfebff8a8ffd297d74663772e248a ("iommu/arm-smmu: Allow client devices to select direct mapping")
I still need to confirm whether qcom_iommu needs a similar thing, but I think it is ok as the iommu phandle link is down one level on the 'mdp' device, rather than attached to the toplevel drm device.
BR, -R