Index: kernel/arch/sparc64/include/atomic.h
===================================================================
--- kernel/arch/sparc64/include/atomic.h	(revision d630139332f649889fde186aaa1729516725c881)
+++ kernel/arch/sparc64/include/atomic.h	(revision 0f6a3376dc93b2660c71d378318b088d41afec79)
@@ -106,5 +106,5 @@
 {
 	uint64_t tmp1 = 1;
-	uint64_t tmp2;
+	uint64_t tmp2 = 0;
 
 	volatile uintptr_t x = (uint64_t) &val->count;