diff options
| 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/m68k | |
| parent | da323d4640704001f2287f729124e1cd9d5684d0 (diff) | |
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/m68k')
| -rw-r--r-- | arch/m68k/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/m68k/Kconfig b/arch/m68k/Kconfig index 3e318bf9504c..4f3e7dec2171 100644 --- a/arch/m68k/Kconfig +++ b/arch/m68k/Kconfig @@ -6,6 +6,7 @@ config M68K select ARCH_HAS_BINFMT_FLAT select ARCH_HAS_CPU_FINALIZE_INIT if MMU select ARCH_HAS_CURRENT_STACK_POINTER + select ARCH_HAS_DMA_ALLOC if !MMU || COLDFIRE select ARCH_HAS_DMA_PREP_COHERENT if HAS_DMA && MMU && !COLDFIRE select ARCH_HAS_SYNC_DMA_FOR_DEVICE if HAS_DMA select ARCH_HAVE_NMI_SAFE_CMPXCHG if RMW_INSNS |