[PATCH] arm64: mte: Remove unused mte_assign_mem_tag_range()

[PATCH] arm64: mte: Remove unused mte_assign_mem_tag_range()

[Vincenzo Frascino]

mte_assign_mem_tag_range() was added in commit 85f49cae4dfc
("arm64: mte: add in-kernel MTE helpers") in 5.11 but moved out of
mte.S by commit 2cb34276427a ("arm64: kasan: simplify and inline
MTE functions") in 5.12 and renamed to mte_set_mem_tag_range().
2cb34276427a did not delete the old function prototypes in mte.h.

Remove the unused prototype from mte.h.

Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Reported-by: Derrick McKee <derrick.mckee@gmail.com>
Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
---
 arch/arm64/include/asm/mte.h | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/arch/arm64/include/asm/mte.h b/arch/arm64/include/asm/mte.h
index 9b557a457f24..387279540139 100644
--- a/arch/arm64/include/asm/mte.h
+++ b/arch/arm64/include/asm/mte.h
@@ -47,8 +47,6 @@ long get_mte_ctrl(struct task_struct *task);
 int mte_ptrace_copy_tags(struct task_struct *child, long request,
 			 unsigned long addr, unsigned long data);
 
-void mte_assign_mem_tag_range(void *addr, size_t size);
-
 #else /* CONFIG_ARM64_MTE */
 
 /* unused if !CONFIG_ARM64_MTE, silence the compiler */
@@ -84,10 +82,6 @@ static inline int mte_ptrace_copy_tags(struct task_struct *child,
 	return -EIO;
 }
 
-static inline void mte_assign_mem_tag_range(void *addr, size_t size)
-{
-}
-
 #endif /* CONFIG_ARM64_MTE */
 
 #endif /* __ASSEMBLY__ */
-- 
2.30.2


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Re: [PATCH] arm64: mte: Remove unused mte_assign_mem_tag_range()

[Catalin Marinas]

On Wed, 7 Apr 2021 14:38:17 +0100, Vincenzo Frascino wrote:
> mte_assign_mem_tag_range() was added in commit 85f49cae4dfc
> ("arm64: mte: add in-kernel MTE helpers") in 5.11 but moved out of
> mte.S by commit 2cb34276427a ("arm64: kasan: simplify and inline
> MTE functions") in 5.12 and renamed to mte_set_mem_tag_range().
> 2cb34276427a did not delete the old function prototypes in mte.h.
> 
> Remove the unused prototype from mte.h.

Applied to arm64 (for-next/misc), thanks!

[1/1] arm64: mte: Remove unused mte_assign_mem_tag_range()
      https://git.kernel.org/arm64/c/df652a16a657

-- 
Catalin


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