Robin Murphy 90ac706e98 dma-mapping: factor out dummy DMA ops ... The dummy DMA ops are currently used by arm64 for any device which has an invalid ACPI description and is thus barred from using DMA due to not knowing whether is is cache-coherent or not. Factor these out into general dma-mapping code so that they can be referenced from other common code paths. In the process, we can prune all the optional callbacks which just do the same thing as the default behaviour, and fill in .map_resource for completeness. Signed-off-by: Robin Murphy <robin.murphy@arm.com> [hch: moved to a separate source file] Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Jesper Dangaard Brouer <brouer@redhat.com> Tested-by: Jesper Dangaard Brouer <brouer@redhat.com> Tested-by: Tony Luck <tony.luck@intel.com> Signed-off-by: Christoph Hellwig <hch@lst.de>		2018-12-13 21:06:12 +01:00
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coherent.c	dma-mapping: move all DMA mapping code to kernel/dma	2018-06-14 08:50:37 +02:00
contiguous.c	dma-mapping: fix panic caused by passing empty cma command line argument	2018-09-20 09:01:08 +02:00
debug.c	dma-mapping: simplify the dma_sync_single_range_for_{cpu,device} implementation	2018-12-13 21:06:08 +01:00
direct.c	dma-direct: remove the mapping_error dma_map_ops method	2018-12-06 06:56:36 -08:00
dummy.c	dma-mapping: factor out dummy DMA ops	2018-12-13 21:06:12 +01:00
Kconfig	dma-mapping: always build the direct mapping code	2018-12-13 21:06:11 +01:00
Makefile	dma-mapping: factor out dummy DMA ops	2018-12-13 21:06:12 +01:00
mapping.c	dma-mapping: move dma_cache_sync out of line	2018-12-13 21:06:10 +01:00
remap.c	dma-mapping: remove a pointless memset in dma_atomic_pool_init	2018-12-13 21:05:20 +01:00
swiotlb.c	dma-direct: remove the mapping_error dma_map_ops method	2018-12-06 06:56:36 -08:00
virt.c	dma-mapping: move all DMA mapping code to kernel/dma	2018-06-14 08:50:37 +02:00