Hi Christoph,
On Mon, Oct 9, 2023 at 9:41 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>
Thanks for your patch!
--- 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
riscv defconfig + CONFIG_NONPORTABLE=y + CONFIG_ARCH_R9A07G043=y:
WARNING: unmet direct dependencies detected for DMA_GLOBAL_POOL
Depends on [n]: !ARCH_HAS_DMA_SET_UNCACHED [=n] && !DMA_DIRECT_REMAP [=y]
Selected by [y]:
- ARCH_R9A07G043 [=y] && SOC_RENESAS [=y] && RISCV [=y] && NONPORTABLE [=y]
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
