1 files changed, 15 insertions, 0 deletions

diff --git a/arch/sparc/lib/atomic32.c b/arch/sparc/lib/atomic32.c
index be46f6545184..cb3cf0f22822 100644
--- a/arch/sparc/lib/atomic32.c
+++ b/arch/sparc/lib/atomic32.c
@@ -53,6 +53,21 @@ int atomic_cmpxchg(atomic_t *v, int old, int new)
         return ret;
 }
 
+int atomic_add_unless(atomic_t *v, int a, int u)
+{
+        int ret;
+        unsigned long flags;
+
+        spin_lock_irqsave(ATOMIC_HASH(v), flags);
+        ret = v->counter;
+        if (ret != u)
+                v->counter += a;
+        spin_unlock_irqrestore(ATOMIC_HASH(v), flags);
+        return ret != u;
+}
+
+static inline void atomic_clear_mask(unsigned long mask, unsigned long *addr)
+/* Atomic operations are already serializing */
 void atomic_set(atomic_t *v, int i)
 {
         unsigned long flags;