[PATCH] iommu/arm-smmu-v3: Fail aliasing StreamIDs more gracefully

[Will Deacon]

On Fri, 11 Apr 2025 15:09:14 +0100, Robin Murphy wrote:
> We've never supported StreamID aliasing between devices, and as such
> they will never have had functioning DMA, but this is not fatal to the
> SMMU itself. Although aliasing between hard-wired platform device
> StreamIDs would tend to raise questions about the whole system, in
> practice it's far more likely to occur relatively innocently due to
> legacy PCI bridges, where the underlying StreamID mappings are still
> perfectly reasonable.
> 
> [...]

I tweaked this ever so slightly (mainly just the diagnostic message) so
that it sits on top of Nicolin's change.

Applied to iommu (arm/smmu/fixes), thanks!

[1/1] iommu/arm-smmu-v3: Fail aliasing StreamIDs more gracefully
      https://git.kernel.org/iommu/c/2d00c34d665b

Cheers,
-- 
Will

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