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[3/6] riscv: mm: mark noncoherent_supported as __ro_after_init

Message ID 20230526165958.908-4-jszhang@kernel.org (mailing list archive)
State Superseded
Headers show
Series riscv: Reduce ARCH_KMALLOC_MINALIGN to 8 | expand

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conchuod/tree_selection success Guessed tree name to be for-next at HEAD ac9a78681b92
conchuod/fixes_present success Fixes tag not required for -next series
conchuod/maintainers_pattern success MAINTAINERS pattern errors before the patch: 6 and now 6
conchuod/verify_signedoff success Signed-off-by tag matches author and committer
conchuod/kdoc success Errors and warnings before: 0 this patch: 0
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conchuod/build_rv64_gcc_allmodconfig success Errors and warnings before: 8 this patch: 8
conchuod/build_rv32_defconfig success Build OK
conchuod/dtb_warn_rv64 success Errors and warnings before: 3 this patch: 3
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

Jisheng Zhang May 26, 2023, 4:59 p.m. UTC
The noncoherent_supported indicates whether the HW is coherent or not,
it won't change after booting, mark it as __ro_after_init.

Signed-off-by: Jisheng Zhang <jszhang@kernel.org>
---
 arch/riscv/mm/dma-noncoherent.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Conor Dooley May 29, 2023, 10:53 a.m. UTC | #1
On Sat, May 27, 2023 at 12:59:55AM +0800, Jisheng Zhang wrote:
> The noncoherent_supported indicates whether the HW is coherent or not,
> it won't change after booting, mark it as __ro_after_init.
> 
> Signed-off-by: Jisheng Zhang <jszhang@kernel.org>

Reviewed-by: Conor Dooley <conor.dooley@microchip.com>

Thanks,
Conor.
diff mbox series

Patch

diff --git a/arch/riscv/mm/dma-noncoherent.c b/arch/riscv/mm/dma-noncoherent.c
index d919efab6eba..d51a75864e53 100644
--- a/arch/riscv/mm/dma-noncoherent.c
+++ b/arch/riscv/mm/dma-noncoherent.c
@@ -10,7 +10,7 @@ 
 #include <linux/mm.h>
 #include <asm/cacheflush.h>
 
-static bool noncoherent_supported;
+static bool noncoherent_supported __ro_after_init;
 
 void arch_sync_dma_for_device(phys_addr_t paddr, size_t size,
 			      enum dma_data_direction dir)