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The host1x devices are virtual compound devices and do not perform DMA accesses themselves, so they do not need to be set up for DMA. Ideally we would also not need to set up DMA masks for the virtual devices, but we currently still need those for legacy support on old hardware. Tested-by: Jon Hunter <jonathanh@nvidia.com> Acked-by: Jon Hunter <jonathanh@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240314154943.2487549-1-thierry.reding@gmail.com Bug 4473025 Change-Id: I09b108a6ee8ed22fa6758c70f7b453de21fd110e Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/3176001 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>