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Message-Id: <20231020054024.78295-2-hch@lst.de> Date: Fri, 20 Oct 2023 07:40:17 +0200 From: Christoph Hellwig <hch@....de> To: Greg Ungerer <gerg@...ux-m68k.org>, iommu@...ts.linux.dev Cc: Robin Murphy <robin.murphy@....com>, Marek Szyprowski <m.szyprowski@...sung.com>, Geert Uytterhoeven <geert@...ux-m68k.org>, Wei Fang <wei.fang@....com>, Shenwei Wang <shenwei.wang@....com>, Clark Wang <xiaoning.wang@....com>, NXP Linux Team <linux-imx@....com>, linux-m68k@...ts.linux-m68k.org, netdev@...r.kernel.org, Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com> Subject: [PATCH 1/8] dma-direct: add depdenencies to CONFIG_DMA_GLOBAL_POOL 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@....de> Reviewed-by: Robin Murphy <robin.murphy@....com> Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com> Reviewed-by: Greg Ungerer <gerg@...ux-m68k.org> Tested-by: Greg Ungerer <gerg@...ux-m68k.org> --- 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
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