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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@lst.de> Reviewed-by: Robin Murphy <robin.murphy@arm.com> |
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.. | ||
coherent.c | ||
contiguous.c | ||
debug.c | ||
direct.c | ||
dummy.c | ||
Kconfig | ||
Makefile | ||
mapping.c | ||
remap.c | ||
swiotlb.c | ||
virt.c |