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| author | Christoph Hellwig <hch@lst.de> | 2023-10-05 09:05:36 +0200 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2023-10-22 16:38:54 +0200 |
| commit | 2c8ed1b960fb97c82ede5afc974329bfdb457f5f (patch) | |
| tree | e6ec8ae5530fa02461f8c2ba7ef2b0551d375576 /arch/arm/Kconfig | |
| parent | da323d4640704001f2287f729124e1cd9d5684d0 (diff) | |
| download | linux-2c8ed1b960fb97c82ede5afc974329bfdb457f5f.tar.gz linux-2c8ed1b960fb97c82ede5afc974329bfdb457f5f.tar.bz2 linux-2c8ed1b960fb97c82ede5afc974329bfdb457f5f.zip | |
dma-direct: add a CONFIG_ARCH_HAS_DMA_ALLOC symbol
Instead of using arch_dma_alloc if none of the generic coherent
allocators are used, require the architectures to explicitly opt into
providing it. This will used to deal with the case of m68knommu and
coldfire where we can't do any coherent allocations whatsoever, and
also makes it clear that arch_dma_alloc is a last resort.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Reviewed-by: Greg Ungerer <gerg@linux-m68k.org>
Tested-by: Greg Ungerer <gerg@linux-m68k.org>
Diffstat (limited to 'arch/arm/Kconfig')
| -rw-r--r-- | arch/arm/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 9557808e8937..f8567e95f98b 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -8,6 +8,7 @@ config ARM select ARCH_HAS_CPU_FINALIZE_INIT if MMU select ARCH_HAS_CURRENT_STACK_POINTER select ARCH_HAS_DEBUG_VIRTUAL if MMU + select ARCH_HAS_DMA_ALLOC if MMU select ARCH_HAS_DMA_WRITE_COMBINE if !ARM_DMA_MEM_BUFFERABLE select ARCH_HAS_ELF_RANDOMIZE select ARCH_HAS_FORTIFY_SOURCE |