--- zzzz-none-000/linux-4.1.52/include/linux/rtmutex.h	2018-05-28 02:26:45.000000000 +0000
+++ bcm63-7530ax-731/linux-4.1.52/include/linux/rtmutex.h	2022-03-02 11:37:13.000000000 +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;
  }