Index: kernel/arch/sparc64/include/atomic.h
===================================================================
--- kernel/arch/sparc64/include/atomic.h	(revision bd1deed7b64271415d7ecf3951bd917d8093536f)
+++ kernel/arch/sparc64/include/atomic.h	(revision d5bd8d70ae04526718fa7fc44f9461c962ec9964)
@@ -106,5 +106,5 @@
 {
 	uint64_t tmp1 = 1;
-	uint64_t tmp2;
+	uint64_t tmp2 = 0;
 
 	volatile uintptr_t x = (uint64_t) &val->count;