pwm-backlight: use duty_cycle rather than brightness value to decide whether to shutd...

Signed-off-by: Lothar Waßmann <LW@KARO-electronics.de>

diff --git a/drivers/video/backlight/pwm_bl.c b/drivers/video/backlight/pwm_bl.c
index 368232af78d29fb714fa6462ed354c8a947c9846..17e0cef59edec16dc6ca8b8adbde1a4f59cd01e4 100644 (file)
--- a/drivers/video/backlight/pwm_bl.c
+++ b/drivers/video/backlight/pwm_bl.c
@@ -111,8 +111,8 @@ static int pwm_backlight_update_status(struct backlight_device *bl)
        if (pb->notify)
                brightness = pb->notify(pb->dev, brightness);
 
-       if (brightness > 0) {
-               duty_cycle = compute_duty_cycle(pb, brightness);
+       duty_cycle = compute_duty_cycle(pb, brightness);
+       if (duty_cycle > 0) {
                pwm_config(pb->pwm, duty_cycle, pb->period);
                pwm_backlight_power_on(pb, brightness);
        } else