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arm64: kasan: fix issues reported by sparse 

Sparse reports some new issues introduced by the kasan patches:

  arch/arm64/mm/kasan_init.c:91:13: warning: no previous prototype for
  'kasan_early_init' [-Wmissing-prototypes] void __init kasan_early_init(void)
             ^
  arch/arm64/mm/kasan_init.c:91:13: warning: symbol 'kasan_early_init'
  was not declared. Should it be static? [sparse]

This patch resolves the problem by adding a prototype for
kasan_early_init and marking the function as asmlinkage, since it's only
called from head.S.

Signed-off-by: Will Deacon <will.deacon@arm.com>
Acked-by: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Will Deacon 2015-10-13 14:01:06 +01:00 committed by Catalin Marinas
parent 4fc5769226
commit 83040123fd
2 changed files with 3 additions and 1 deletions
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2
arch/arm64/include/asm/kasan.h
View File

@ -5,6 +5,7 @@
#ifdef CONFIG_KASAN #ifdef CONFIG_KASAN
#include <linux/linkage.h>
#include <asm/memory.h> #include <asm/memory.h>
/* /*
@ -27,6 +28,7 @@
#define KASAN_SHADOW_OFFSET (KASAN_SHADOW_END - (1ULL << (64 - 3))) #define KASAN_SHADOW_OFFSET (KASAN_SHADOW_END - (1ULL << (64 - 3)))
void kasan_init(void); void kasan_init(void);
asmlinkage void kasan_early_init(void);
#else #else
static inline void kasan_init(void) { } static inline void kasan_init(void) { }

2
arch/arm64/mm/kasan_init.c
View File

@ -88,7 +88,7 @@ static void __init kasan_map_early_shadow(void)
} while (pgd++, addr = next, addr != end); } while (pgd++, addr = next, addr != end);
} }
void __init kasan_early_init(void) asmlinkage void __init kasan_early_init(void)
{ {
BUILD_BUG_ON(KASAN_SHADOW_OFFSET != KASAN_SHADOW_END - (1UL << 61)); BUILD_BUG_ON(KASAN_SHADOW_OFFSET != KASAN_SHADOW_END - (1UL << 61));
BUILD_BUG_ON(!IS_ALIGNED(KASAN_SHADOW_START, PGDIR_SIZE)); BUILD_BUG_ON(!IS_ALIGNED(KASAN_SHADOW_START, PGDIR_SIZE));