diff options
| author | Will Deacon <will.deacon@arm.com> | 2017-07-07 17:01:50 +0100 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2017-07-20 10:20:54 +0100 |
| commit | 32fb5d73c98b079e7c815b62e9d88a39ff8ce509 (patch) | |
| tree | e7624355431132782ebf5e66404291c026eca667 | |
| parent | c396fe7f0c2efdf6c02d723f7bd492c58725c822 (diff) | |
| download | linux-stable-32fb5d73c98b079e7c815b62e9d88a39ff8ce509.tar.gz linux-stable-32fb5d73c98b079e7c815b62e9d88a39ff8ce509.tar.bz2 linux-stable-32fb5d73c98b079e7c815b62e9d88a39ff8ce509.zip | |
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 <will.deacon@arm.com>
| -rw-r--r-- | arch/arm64/include/asm/atomic_lse.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm64/include/asm/atomic_lse.h b/arch/arm64/include/asm/atomic_lse.h index 99fa69c9c3cf..9ef0797380cb 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"); |