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ARM: remove __bad_xchg definition

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We want link errors if xchg() is called for a variable size we do not
support.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King 2015-05-19 13:39:05 +01:00
parent 45b0fa09c6
commit 31cd08c3a1
2 changed files with 1 additions and 8 deletions
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1
arch/arm/include/asm/cmpxchg.h
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@ -94,6 +94,7 @@ static inline unsigned long __xchg(unsigned long x, volatile void *ptr, int size
break; break;
#endif #endif
default: default:
/* Cause a link-time error, the xchg() size is not supported */
__bad_xchg(ptr, size), ret = 0; __bad_xchg(ptr, size), ret = 0;
break; break;
} }

8
arch/arm/kernel/traps.c
View file

@ -749,14 +749,6 @@ late_initcall(arm_mrc_hook_init);
#endif #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. * 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. * Try to abort the user program, or panic if it was the kernel.