--- zzzz-none-000/linux-3.10.107/include/linux/mutex.h	2017-06-27 09:49:32.000000000 +0000
+++ vr9-7490-729/linux-3.10.107/include/linux/mutex.h	2021-11-10 11:53:56.000000000 +0000
@@ -95,7 +95,7 @@
 							\
 	__mutex_init((mutex), #mutex, &__key);		\
 } while (0)
-static inline void mutex_destroy(struct mutex *lock) {}
+static inline void mutex_destroy(struct mutex *lock __attribute__((unused))) {}
 #endif
 
 #ifdef CONFIG_DEBUG_LOCK_ALLOC