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authorChristoph Hellwig <hch@lst.de>2023-10-05 09:06:55 +0200
committerChristoph Hellwig <hch@lst.de>2023-10-22 16:38:02 +0200
commitda323d4640704001f2287f729124e1cd9d5684d0 (patch)
treef1cd06c3197eb9fc6b3c2de51a8927ff278b113e /kernel
parentMerge tag 'net-6.6-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/netd... (diff)
downloadlinux-da323d4640704001f2287f729124e1cd9d5684d0.tar.xz
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dma-direct: add dependencies to CONFIG_DMA_GLOBAL_POOL
CONFIG_DMA_GLOBAL_POOL can't be combined with other DMA coherent allocators. Add dependencies to Kconfig to document this, and make kconfig complain about unmet dependencies if someone tries. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Robin Murphy <robin.murphy@arm.com> Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Reviewed-by: Greg Ungerer <gerg@linux-m68k.org> Tested-by: Greg Ungerer <gerg@linux-m68k.org>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/dma/Kconfig2
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/dma/Kconfig b/kernel/dma/Kconfig
index f488997b0717..4524db877eba 100644
--- a/kernel/dma/Kconfig
+++ b/kernel/dma/Kconfig
@@ -135,6 +135,8 @@ config DMA_COHERENT_POOL
config DMA_GLOBAL_POOL
select DMA_DECLARE_COHERENT
+ depends on !ARCH_HAS_DMA_SET_UNCACHED
+ depends on !DMA_DIRECT_REMAP
bool
config DMA_DIRECT_REMAP