diff --git a/[refs] b/[refs]
index bc3158681922..155f66c02d70 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: aef9cb05247df3d7615773737beb4f83d78577bb
+refs/heads/master: d192c47f25daa98996c7eae543d8a27e41247ec2
diff --git a/trunk/kernel/time/tick-common.c b/trunk/kernel/time/tick-common.c
index 83c4417b6a3c..af39cf1cfa50 100644
--- a/trunk/kernel/time/tick-common.c
+++ b/trunk/kernel/time/tick-common.c
@@ -34,7 +34,7 @@ DEFINE_PER_CPU(struct tick_device, tick_cpu_device);
 ktime_t tick_next_period;
 ktime_t tick_period;
 int tick_do_timer_cpu __read_mostly = TICK_DO_TIMER_BOOT;
-DEFINE_SPINLOCK(tick_device_lock);
+static DEFINE_SPINLOCK(tick_device_lock);
 
 /*
  * Debugging: see timer_list.c
diff --git a/trunk/kernel/time/tick-internal.h b/trunk/kernel/time/tick-internal.h
index b1c05bf75ee0..290eefbc1f60 100644
--- a/trunk/kernel/time/tick-internal.h
+++ b/trunk/kernel/time/tick-internal.h
@@ -6,7 +6,6 @@
 #define TICK_DO_TIMER_BOOT	-2
 
 DECLARE_PER_CPU(struct tick_device, tick_cpu_device);
-extern spinlock_t tick_device_lock;
 extern ktime_t tick_next_period;
 extern ktime_t tick_period;
 extern int tick_do_timer_cpu __read_mostly;