diff --git a/include/linux/clocksource.h b/include/linux/clocksource.h
index 3089189..b21db53 100644
--- a/include/linux/clocksource.h
+++ b/include/linux/clocksource.h
@@ -241,6 +241,11 @@
 	__clocksource_update_freq_scale(cs, 1000, khz);
 }
 
+#ifdef CONFIG_ARCH_CLOCKSOURCE_INIT
+extern void clocksource_arch_init(struct clocksource *cs);
+#else
+static inline void clocksource_arch_init(struct clocksource *cs) { }
+#endif
 
 extern int timekeeping_notify(struct clocksource *clock);
 
@@ -257,9 +262,6 @@
 #define TIMER_OF_DECLARE(name, compat, fn) \
 	OF_DECLARE_1_RET(timer, name, compat, fn)
 
-#define CLOCKSOURCE_OF_DECLARE(name, compat, fn) \
-	TIMER_OF_DECLARE(name, compat, fn)
-
 #ifdef CONFIG_TIMER_PROBE
 extern void timer_probe(void);
 #else