From 32fb5d73c98b079e7c815b62e9d88a39ff8ce509 Mon Sep 17 00:00:00 2001 From: Will Deacon Date: Fri, 7 Jul 2017 17:01:50 +0100 Subject: [PATCH] arm64: atomics: Remove '&' from '+&' asm constraint in lse atomics The lse implementation of atomic64_dec_if_positive uses the '+&' constraint, but the '&' is redundant and confusing in this case, since early clobber on a read/write operand is a strange concept. Replace the constraint with '+'. Signed-off-by: Will Deacon --- arch/arm64/include/asm/atomic_lse.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm64/include/asm/atomic_lse.h b/arch/arm64/include/asm/atomic_lse.h index 99fa69c..9ef0797 100644 --- a/arch/arm64/include/asm/atomic_lse.h +++ b/arch/arm64/include/asm/atomic_lse.h @@ -435,7 +435,7 @@ static inline long atomic64_dec_if_positive(atomic64_t *v) " sub x30, x30, %[ret]\n" " cbnz x30, 1b\n" "2:") - : [ret] "+&r" (x0), [v] "+Q" (v->counter) + : [ret] "+r" (x0), [v] "+Q" (v->counter) : : __LL_SC_CLOBBERS, "cc", "memory"); -- 2.7.4