summaryrefslogtreecommitdiff
path: root/arch/m68k/Kconfig
diff options
context:
space:
mode:
authorChristoph Hellwig <hch@lst.de>2023-10-05 09:05:36 +0200
committerChristoph Hellwig <hch@lst.de>2023-10-22 16:38:54 +0200
commit2c8ed1b960fb97c82ede5afc974329bfdb457f5f (patch)
treee6ec8ae5530fa02461f8c2ba7ef2b0551d375576 /arch/m68k/Kconfig
parentda323d4640704001f2287f729124e1cd9d5684d0 (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/Kconfig')
-rw-r--r--arch/m68k/Kconfig1
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