diff --git a/arch/s390/kernel/entry.h b/arch/s390/kernel/entry.h
index 09abb11bc6602..1ab33465382ff 100644
--- a/arch/s390/kernel/entry.h
+++ b/arch/s390/kernel/entry.h
@@ -36,7 +36,7 @@ void do_notify_resume(struct pt_regs *regs);
 void __init init_IRQ(void);
 void do_io_irq(struct pt_regs *regs);
 void do_ext_irq(struct pt_regs *regs);
-void do_restart(void);
+void do_restart(void *arg);
 void __init startup_init(void);
 void die(struct pt_regs *regs, const char *str);
 int setup_profiling_timer(unsigned int multiplier);
diff --git a/arch/s390/kernel/ipl.c b/arch/s390/kernel/ipl.c
index 7a21eca498aae..dba04fbc37a21 100644
--- a/arch/s390/kernel/ipl.c
+++ b/arch/s390/kernel/ipl.c
@@ -1849,12 +1849,12 @@ static void __do_restart(void *ignore)
 	stop_run(&on_restart_trigger);
 }
 
-void do_restart(void)
+void do_restart(void *arg)
 {
 	tracing_off();
 	debug_locks_off();
 	lgr_info_log();
-	smp_call_online_cpu(__do_restart, NULL);
+	smp_call_online_cpu(__do_restart, arg);
 }
 
 /* on halt */