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Subject[PATCH] riscv: Kconfig: Select DMA_DIRECT_REMAP only if MMU is enabled
Date
From: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>

kernel/dma/mapping.c has its use of pgprot_dmacoherent() inside
an #ifdef CONFIG_MMU block. kernel/dma/pool.c has its use of
pgprot_dmacoherent() inside an #ifdef CONFIG_DMA_DIRECT_REMAP block.
So select DMA_DIRECT_REMAP only if MMU is enabled for RISCV_DMA_NONCOHERENT
config.

This avoids users to explicitly select MMU.

Suggested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
---
arch/riscv/Kconfig | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index 468063780a93..a065abdc80e3 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -273,7 +273,7 @@ config RISCV_DMA_NONCOHERENT
select ARCH_HAS_SYNC_DMA_FOR_CPU
select ARCH_HAS_SYNC_DMA_FOR_DEVICE
select DMA_BOUNCE_UNALIGNED_KMALLOC if SWIOTLB
- select DMA_DIRECT_REMAP
+ select DMA_DIRECT_REMAP if MMU

config RISCV_NONSTANDARD_CACHE_OPS
bool
--
2.34.1
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