[PATCH] iommu/arm-smmu: Force identity domains for legacy binding

[Will Deacon]

On Tue, 10 May 2022 09:38:58 +0100, Robin Murphy wrote:
> When using the legacy "mmu-masters" DT binding, we reject DMA domains
> since we have no guarantee of driver probe order and thus can't rely on
> client drivers getting the correct DMA ops. However, we can do better
> than fall back to the old no-default-domain behaviour now, by forcing an
> identity default domain instead. This also means that detaching from a
> VFIO domain can actually work - that looks to have been broken for over
> 6 years, so clearly isn't something that legacy binding users care
> about, but we may as well make the driver code make sense anyway.
> 
> [...]

Applied to will (for-joerg/arm-smmu/updates), thanks!

[1/1] iommu/arm-smmu: Force identity domains for legacy binding
      https://git.kernel.org/will/c/628bf55b6204

Cheers,
-- 
Will

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