On Mon, Oct 16, 2023 at 6:48 AM Christoph Hellwig <hch@xxxxxx> wrote:
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 unment dependencies if someone tries.
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
---
kernel/dma/Kconfig | 2 ++
1 file changed, 2 insertions(+)
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>
Cheers,
Prabhakar
diff --git a/kernel/dma/Kconfig b/kernel/dma/Kconfig
index f488997b071712..4524db877eba36 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
--
2.39.2
