--- zzzz-none-000/linux-4.9.279/include/linux/cpu.h	2021-08-08 06:38:54.000000000 +0000
+++ puma7-arm-6591-750/linux-4.9.279/include/linux/cpu.h	2023-02-08 10:58:16.000000000 +0000
@@ -121,10 +121,14 @@
 #define cpu_notifier(fn, pri)	do { (void)(fn); } while (0)
 #define __cpu_notifier(fn, pri)	do { (void)(fn); } while (0)
 
+#ifndef MODULE
+extern int register_cpu_notifier(struct notifier_block *nb);
+#else
 static inline int register_cpu_notifier(struct notifier_block *nb)
 {
 	return 0;
 }
+#endif /* #ifndef MODULE */
 
 static inline int __register_cpu_notifier(struct notifier_block *nb)
 {