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| author | Christoph Hellwig <hch@lst.de> | 2019-03-25 15:44:06 +0100 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2019-05-06 15:04:40 +0200 |
| commit | 13bf5ced93775ffccb53527a9d862e023a9daa03 (patch) | |
| tree | 8841a56889a7b6468e7c81215428376358345211 /arch/arm64/Kconfig | |
| parent | 148a97d5a02a62f81b5d6176f871c94a65e1f3af (diff) | |
| download | lwn-13bf5ced93775ffccb53527a9d862e023a9daa03.tar.gz lwn-13bf5ced93775ffccb53527a9d862e023a9daa03.zip | |
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/arm64/Kconfig')
| -rw-r--r-- | arch/arm64/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 7e34b9eba5de..adda078d6df7 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -13,6 +13,7 @@ config ARM64 select ARCH_HAS_DEVMEM_IS_ALLOWED select ARCH_HAS_DMA_COHERENT_TO_PFN select ARCH_HAS_DMA_MMAP_PGPROT + select ARCH_HAS_DMA_PREP_COHERENT select ARCH_HAS_ACPI_TABLE_UPGRADE if ACPI select ARCH_HAS_ELF_RANDOMIZE select ARCH_HAS_FAST_MULTIPLIER |