1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/macintosh/via-pmu-backlight.c b/drivers/macintosh/via-pmu-backlight.c
index 4397fac55ba0..a82f313d9dc9 100644
--- a/drivers/macintosh/via-pmu-backlight.c
+++ b/drivers/macintosh/via-pmu-backlight.c
@@ -167,11 +167,11 @@ void __init pmu_backlight_init()
                                 pmu_backlight_data.max_brightness / 15);
         }
 
-        up(&bd->sem);
+        down(&bd->sem);
         bd->props->brightness = level;
         bd->props->power = FB_BLANK_UNBLANK;
         bd->props->update_status(bd);
-        down(&bd->sem);
+        up(&bd->sem);
 
         mutex_lock(&pmac_backlight_mutex);
         if (!pmac_backlight)