Re: [PATCH 02/25] dma-mapping: add a Kconfig symbol to indicated arch_dma_prep_coherent presence

[Catalin Marinas]

On Tue, Apr 30, 2019 at 06:51:51AM -0400, Christoph Hellwig wrote:
> Add a Kconfig symbol that indicates an architecture provides a
> arch_dma_prep_coherent implementation, and provide a stub otherwise.
> 
> This will allow the generic dma-iommu code to use it while still
> allowing to be built for cache coherent architectures.
> 
> Signed-off-by: Christoph Hellwig <hch@xxxxxx>
> Reviewed-by: Robin Murphy <robin.murphy@xxxxxxx>

Acked-by: Catalin Marinas <catalin.marinas@xxxxxxx>