On 16/10/2023 6:47 am, Christoph Hellwig 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.
Reviewed-by: Robin Murphy <robin.murphy@xxxxxxx>
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
---
kernel/dma/Kconfig | 2 ++
1 file changed, 2 insertions(+)
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
