diff --git a/kernel/rtmutex-debug.c b/kernel/rtmutex-debug.c
index 5aedbee..6b0703d 100644
--- a/kernel/rtmutex-debug.c
+++ b/kernel/rtmutex-debug.c
@@ -82,12 +82,7 @@ do {						\
  * into the tracing code when doing error printk or
  * executing a BUG():
  */
-int rt_trace_on = 1;
-
-void deadlock_trace_off(void)
-{
-	rt_trace_on = 0;
-}
+static int rt_trace_on = 1;
 
 static void printk_task(struct task_struct *p)
 {