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| author | Christoph Hellwig <hch@lst.de> | 2019-03-25 17:44:06 +0300 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2019-05-06 16:04:40 +0300 |
| commit | 13bf5ced93775ffccb53527a9d862e023a9daa03 (patch) | |
| tree | 8841a56889a7b6468e7c81215428376358345211 /arch/csky | |
| parent | 148a97d5a02a62f81b5d6176f871c94a65e1f3af (diff) | |
| download | linux-13bf5ced93775ffccb53527a9d862e023a9daa03.tar.xz | |
dma-mapping: add a Kconfig symbol to indicate arch_dma_prep_coherent presence
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>
Diffstat (limited to 'arch/csky')
| -rw-r--r-- | arch/csky/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/csky/Kconfig b/arch/csky/Kconfig index 725a115759c9..2c3178848b7d 100644 --- a/arch/csky/Kconfig +++ b/arch/csky/Kconfig @@ -1,6 +1,7 @@ config CSKY def_bool y select ARCH_32BIT_OFF_T + select ARCH_HAS_DMA_PREP_COHERENT select ARCH_HAS_SYNC_DMA_FOR_CPU select ARCH_HAS_SYNC_DMA_FOR_DEVICE select ARCH_USE_BUILTIN_BSWAP |