--- zzzz-none-000/linux-4.1.38/include/linux/rtmutex.h	2017-01-18 18:48:06.000000000 +0000
+++ bcm63-7582-715/linux-4.1.38/include/linux/rtmutex.h	2020-11-25 10:06:48.000000000 +0000
@@ -47,8 +47,9 @@
 						unsigned long len);
  extern void rt_mutex_debug_check_no_locks_held(struct task_struct *task);
 #else
- static inline int rt_mutex_debug_check_no_locks_freed(const void *from,
-						       unsigned long len)
+ static inline int rt_mutex_debug_check_no_locks_freed(
+					const void *from __maybe_unused,
+					unsigned long len __maybe_unused)
  {
 	return 0;
  }