linux-kernel - [PATCH v2 4/5] riscv: Select ARCH_DMA_DEFAULT

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Date:   Thu, 23 Feb 2023 11:36:43 +0000
From:   Jiaxun Yang <jiaxun.yang@...goat.com>
To:     linux-mips@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
        tsbogend@...ha.franken.de, mpe@...erman.id.au,
        paul.walmsley@...ive.com, palmer@...belt.com, robh+dt@...nel.org,
        hch@....de, m.szyprowski@...sung.com, robin.murphy@....com,
        linux-riscv@...ts.infradead.org,
        Jiaxun Yang <jiaxun.yang@...goat.com>
Subject: [PATCH v2 4/5] riscv: Select ARCH_DMA_DEFAULT_COHERENT

For riscv our assumption is unless a device states it is non-coherent,
we take it to be DMA coherent.

Select ARCH_DMA_DEFAULT_COHERENT to ensure dma_default_coherent
is always initialized to true.

Signed-off-by: Jiaxun Yang <jiaxun.yang@...goat.com>
---
 arch/riscv/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index 1d46a268ce16..b71ce992c0c0 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -233,6 +233,7 @@ config LOCKDEP_SUPPORT
 
 config RISCV_DMA_NONCOHERENT
 	bool
+	select ARCH_DMA_DEFAULT_COHERENT
 	select ARCH_HAS_DMA_PREP_COHERENT
 	select ARCH_HAS_SETUP_DMA_OPS
 	select ARCH_HAS_SYNC_DMA_FOR_CPU
-- 
2.37.1 (Apple Git-137.1)