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-rw-r--r--arch/arm/include/asm/cmpxchg.h1
-rw-r--r--arch/arm/kernel/traps.c8
2 files changed, 1 insertions, 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.