[PATCH 1/6] dma-direct: add depdenencies to CONFIG_DMA_GLOBAL_POOL

Christoph Hellwig
2023-10-09T07:41:43Z

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@lst.de>
---
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
--
2.39.2