From 31cd08c3a1db4b3164567a2a424b5e5dba6ce7a3 Mon Sep 17 00:00:00 2001 From: Russell King Date: Tue, 19 May 2015 13:39:05 +0100 Subject: [PATCH] ARM: remove __bad_xchg definition We want link errors if xchg() is called for a variable size we do not support. Signed-off-by: Russell King --- arch/arm/include/asm/cmpxchg.h | 1 + arch/arm/kernel/traps.c | 8 -------- 2 files changed, 1 insertion(+), 8 deletions(-) diff --git a/arch/arm/include/asm/cmpxchg.h b/arch/arm/include/asm/cmpxchg.h index abb2c3769b01..f4d74ab3ec1f 100644 --- a/arch/arm/include/asm/cmpxchg.h +++ b/arch/arm/include/asm/cmpxchg.h @@ -94,6 +94,7 @@ static inline unsigned long __xchg(unsigned long x, volatile void *ptr, int size break; #endif default: + /* Cause a link-time error, the xchg() size is not supported */ __bad_xchg(ptr, size), ret = 0; break; } diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c index 3dce1a342030..d358226236f2 100644 --- a/arch/arm/kernel/traps.c +++ b/arch/arm/kernel/traps.c @@ -749,14 +749,6 @@ late_initcall(arm_mrc_hook_init); #endif -void __bad_xchg(volatile void *ptr, int size) -{ - pr_err("xchg: bad data size: pc 0x%p, ptr 0x%p, size %d\n", - __builtin_return_address(0), ptr, size); - BUG(); -} -EXPORT_SYMBOL(__bad_xchg); - /* * A data abort trap was taken, but we did not handle the instruction. * Try to abort the user program, or panic if it was the kernel.