author: Mark Rutland <mark.rutland@arm.com> 2018-06-21 13:13:11 +0100
committer: Ingo Molnar <mingo@kernel.org> 2018-06-21 14:25:21 +0200
commit: 00b808ab79ead372daf1a0682d1ef271599c0b55
parent: 0ae1d994020d75ac065fd42ac4cbf5ac6ce9b255
Commit Summary:
Diffstat:
1 file changed, 6 insertions, 7 deletions
diff --git a/lib/atomic64.c b/lib/atomic64.c
index 4230f4b8906c..1d91e31eceec 100644
--- a/lib/atomic64.c
+++ b/lib/atomic64.c
@@ -178,18 +178,18 @@ long long atomic64_xchg(atomic64_t *v, long long new)
}
EXPORT_SYMBOL(atomic64_xchg);
-bool atomic64_add_unless(atomic64_t *v, long long a, long long u)
+long long atomic64_fetch_add_unless(atomic64_t *v, long long a, long long u)
{
unsigned long flags;
raw_spinlock_t *lock = lock_addr(v);
- bool ret = false;
+ long long val;
raw_spin_lock_irqsave(lock, flags);
- if (v->counter != u) {
+ val = v->counter;
+ if (val != u)
v->counter += a;
- ret = true;
- }
raw_spin_unlock_irqrestore(lock, flags);
- return ret;
+
+ return val;
}
-EXPORT_SYMBOL(atomic64_add_unless);
+EXPORT_SYMBOL(atomic64_fetch_add_unless);