--- zzzz-none-000/linux-3.10.107/include/linux/cpuidle.h	2017-06-27 09:49:32.000000000 +0000
+++ vr9-7490-729/linux-3.10.107/include/linux/cpuidle.h	2021-11-10 11:53:56.000000000 +0000
@@ -83,6 +83,7 @@
 };
 
 DECLARE_PER_CPU(struct cpuidle_device *, cpuidle_devices);
+DECLARE_PER_CPU(struct cpuidle_device, cpuidle_dev);
 
 /**
  * cpuidle_get_last_residency - retrieves the last state's residency time
@@ -167,7 +168,7 @@
 #ifdef CONFIG_ARCH_NEEDS_CPU_IDLE_COUPLED
 void cpuidle_coupled_parallel_barrier(struct cpuidle_device *dev, atomic_t *a);
 #else
-static inline void cpuidle_coupled_parallel_barrier(struct cpuidle_device *dev, atomic_t *a)
+static inline void cpuidle_coupled_parallel_barrier(struct cpuidle_device *dev __maybe_unused, atomic_t *a __maybe_unused)
 {
 }
 #endif