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| author | Arnd Bergmann <arnd@arndb.de> | 2015-11-19 15:22:42 +0300 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2015-12-03 03:02:29 +0300 |
| commit | e9c38ceba8d96304c75ca99f7e49060af3a7e063 (patch) | |
| tree | 312dedc9100aad77d99840c3ddb984956e5f083f | |
| parent | a4124e7296000242243996e1ae2601cfadf276a5 (diff) | |
| download | linux-e9c38ceba8d96304c75ca99f7e49060af3a7e063.tar.xz | |
ARM: 8455/1: define __BUG as asm(BUG_INSTR) without CONFIG_BUG
Following (a long time after) a4b5d580e078 ("bug: Make BUG() always stop
the machine"), this adapts the ARM architecture to no longer rely
on the sub-optimal BUG() definition that has a silent endless loop
but instead use the same trapping instruction that we have for
the full BUG() support.
This avoids hundreds of warnings like
arch/arm/include/asm/xen/page.h: In function 'arbitrary_virt_to_machine':
arch/arm/include/asm/xen/page.h:85:1: warning: no return statement in function returning non-void [-Wreturn-type]
and also makes the code size slightly smaller. The behavior changes
from silently stopping the kernel to an oops, and follows what x86
does these days.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| -rw-r--r-- | arch/arm/include/asm/bug.h | 5 |
1 files changed, 1 insertions, 4 deletions
diff --git a/arch/arm/include/asm/bug.h b/arch/arm/include/asm/bug.h index e7335a92144e..4e6e88a6b2f4 100644 --- a/arch/arm/include/asm/bug.h +++ b/arch/arm/include/asm/bug.h @@ -5,8 +5,6 @@ #include <linux/types.h> #include <asm/opcodes.h> -#ifdef CONFIG_BUG - /* * Use a suitable undefined instruction to use for ARM/Thumb2 bug handling. * We need to be careful not to conflict with those used by other modules and @@ -47,7 +45,7 @@ do { \ unreachable(); \ } while (0) -#else /* not CONFIG_DEBUG_BUGVERBOSE */ +#else #define __BUG(__file, __line, __value) \ do { \ @@ -57,7 +55,6 @@ do { \ #endif /* CONFIG_DEBUG_BUGVERBOSE */ #define HAVE_ARCH_BUG -#endif /* CONFIG_BUG */ #include <asm-generic/bug.h> |