diff --git a/arch/m68k/atari/time.c b/arch/m68k/atari/time.c
index e2df4a13d2bb..1edde27fa32d 100644
--- a/arch/m68k/atari/time.c
+++ b/arch/m68k/atari/time.c
@@ -20,6 +20,9 @@
 
 #include <asm/atariints.h>
 
+DEFINE_SPINLOCK(rtc_lock);
+EXPORT_SYMBOL_GPL(rtc_lock);
+
 void __init
 atari_sched_init(irq_handler_t timer_routine)
 {