diff options
Diffstat (limited to 'arch/mips/include/asm/cmpxchg.h')
| -rw-r--r-- | arch/mips/include/asm/cmpxchg.h | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/arch/mips/include/asm/cmpxchg.h b/arch/mips/include/asm/cmpxchg.h index a19359649b60..ee0214e00ab1 100644 --- a/arch/mips/include/asm/cmpxchg.h +++ b/arch/mips/include/asm/cmpxchg.h @@ -137,10 +137,17 @@ static inline unsigned long __xchg(unsigned long x, volatile void * ptr, int siz }) /* - * This function doesn't exist, so you'll get a linker error - * if something tries to do an invalid cmpxchg(). + * This function doesn't exist, so if it is called you'll either: + * + * - Get an error at compile-time due to __compiletime_error, if supported by + * your compiler. + * + * or: + * + * - Get an error at link-time due to the call to the missing function. */ -extern void __cmpxchg_called_with_bad_pointer(void); +extern void __cmpxchg_called_with_bad_pointer(void) + __compiletime_error("Bad argument size for cmpxchg"); #define __cmpxchg(ptr, old, new, pre_barrier, post_barrier) \ ({ \ |