diff --git a/drivers/macintosh/via-pmu-backlight.c b/drivers/macintosh/via-pmu-backlight.c
index a82f313d9dc97681a8d7220d25d1faa5de6eceb0..6c29fe727c0f4ea7ee30d1daac58dc5efc309fc6 100644
--- a/drivers/macintosh/via-pmu-backlight.c
+++ b/drivers/macintosh/via-pmu-backlight.c
@@ -16,7 +16,7 @@
 #define MAX_PMU_LEVEL 0xFF
 
 static struct backlight_properties pmu_backlight_data;
-static spinlock_t pmu_backlight_lock;
+static DEFINE_SPINLOCK(pmu_backlight_lock);
 static int sleeping;
 static u8 bl_curve[FB_BACKLIGHT_LEVELS];