diff mbox series

riscv: Kconfig: Select DMA_DIRECT_REMAP only if MMU is enabled

Message ID 20230901105111.311200-1-prabhakar.mahadev-lad.rj@bp.renesas.com (mailing list archive)
State Accepted
Commit 5bf68a586ff447b65b8043308915d9b10df8a166
Headers show
Series riscv: Kconfig: Select DMA_DIRECT_REMAP only if MMU is enabled | expand

Checks

Context Check Description
conchuod/cover_letter success Single patches do not need cover letters
conchuod/tree_selection success Guessed tree name to be for-next at HEAD 9a1d204f5c57
conchuod/fixes_present success Fixes tag not required for -next series
conchuod/maintainers_pattern success MAINTAINERS pattern errors before the patch: 2 and now 2
conchuod/verify_signedoff success Signed-off-by tag matches author and committer
conchuod/kdoc success Errors and warnings before: 0 this patch: 0
conchuod/build_rv64_clang_allmodconfig success Errors and warnings before: 9 this patch: 9
conchuod/module_param success Was 0 now: 0
conchuod/build_rv64_gcc_allmodconfig success Errors and warnings before: 9 this patch: 9
conchuod/build_rv32_defconfig success Build OK
conchuod/dtb_warn_rv64 success Errors and warnings before: 39 this patch: 39
conchuod/header_inline success No static functions without inline keyword in header files
conchuod/checkpatch success total: 0 errors, 0 warnings, 0 checks, 8 lines checked
conchuod/build_rv64_nommu_k210_defconfig success Build OK
conchuod/verify_fixes success No Fixes tag
conchuod/build_rv64_nommu_virt_defconfig success Build OK

Commit Message

Lad, Prabhakar Sept. 1, 2023, 10:51 a.m. UTC 
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(-)

Comments

patchwork-bot+linux-riscv@kernel.org Sept. 6, 2023, 2:50 a.m. UTC | #1 
Hello:

This patch was applied to riscv/linux.git (for-next)
by Palmer Dabbelt <palmer@rivosinc.com>:

On Fri,  1 Sep 2023 11:51:11 +0100 you wrote:
> 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.
> 
> [...]

Here is the summary with links:
  - riscv: Kconfig: Select DMA_DIRECT_REMAP only if MMU is enabled
    https://git.kernel.org/riscv/c/5bf68a586ff4

You are awesome, thank you!
diff mbox series

Patch

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