diff -Naur linux-4.14.173.org/include/linux/timer.h linux-4.14.173/include/linux/timer.h
--- linux-4.14.173.org/include/linux/timer.h	2020-03-11 18:03:09.000000000 +0100
+++ linux-4.14.173/include/linux/timer.h	2020-04-30 19:30:13.956596003 +0200
@@ -180,6 +180,14 @@
 		      (TIMER_DATA_TYPE)timer, flags);
 }
 
+static inline void timer_setup_on_stack(struct timer_list *timer,
+			       void (*callback)(struct timer_list *),
+			       unsigned int flags)
+{
+	__setup_timer_on_stack(timer, (TIMER_FUNC_TYPE)callback,
+		      (TIMER_DATA_TYPE)timer, flags);
+}
+
 #define from_timer(var, callback_timer, timer_fieldname) \
 	container_of(callback_timer, typeof(*var), timer_fieldname)