Re: [PATCH 05/12] dma-direct: add depdenencies to CONFIG_DMA_GLOBAL_POOL

["Lad, Prabhakar" <prabhakar.csengg@xxxxxxxxx>]

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
>