On Thu, Mar 10, 2016 at 4:23 PM, Mans Rullgard <[email protected]> wrote: > If the 'old' operand to cmpxchg() is a constant wider than 21 bits, > linking fails with a "relocation truncated to fit: R_AVR32_21S" error. > > Fix this by replacing the "i" constraint with "Ks21" which makes the > compiler use a temporary register for out of range constants. > > Signed-off-by: Mans Rullgard <[email protected]>
Tested-by: Andy Shevchenko <[email protected]> > --- > This fixes link errors in linux-next with CONFIG_AIO_THREAD enabled. > --- > arch/avr32/include/asm/cmpxchg.h | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/arch/avr32/include/asm/cmpxchg.h > b/arch/avr32/include/asm/cmpxchg.h > index 366bbeaeb405..572739b4c4b4 100644 > --- a/arch/avr32/include/asm/cmpxchg.h > +++ b/arch/avr32/include/asm/cmpxchg.h > @@ -57,7 +57,7 @@ static inline unsigned long __cmpxchg_u32(volatile int *m, > unsigned long old, > " brne 1b\n" > "2:\n" > : [ret] "=&r"(ret), [m] "=m"(*m) > - : "m"(m), [old] "ir"(old), [new] "r"(new) > + : "m"(m), [old] "Ks21r"(old), [new] "r"(new) > : "memory", "cc"); > return ret; > } > -- > 2.7.2 > -- With Best Regards, Andy Shevchenko
