diff options
Diffstat (limited to 'drivers/leds')
| -rw-r--r-- | drivers/leds/trigger/ledtrig-backlight.c | 30 |
1 files changed, 16 insertions, 14 deletions
diff --git a/drivers/leds/trigger/ledtrig-backlight.c b/drivers/leds/trigger/ledtrig-backlight.c index 3c9c88a07eb..47e55aa9eef 100644 --- a/drivers/leds/trigger/ledtrig-backlight.c +++ b/drivers/leds/trigger/ledtrig-backlight.c @@ -36,26 +36,28 @@ static int fb_notifier_callback(struct notifier_block *p, struct bl_trig_notifier, notifier); struct led_classdev *led = n->led; struct fb_event *fb_event = data; - int *blank = fb_event->data; - int new_status = *blank ? BLANK : UNBLANK; + int *blank; + int new_status; - switch (event) { - case FB_EVENT_BLANK: - if (new_status == n->old_status) - break; + /* If we aren't interested in this event, skip it immediately ... */ + if (event != FB_EVENT_BLANK) + return 0; - if ((n->old_status == UNBLANK) ^ n->invert) { - n->brightness = led->brightness; - __led_set_brightness(led, LED_OFF); - } else { - __led_set_brightness(led, n->brightness); - } + blank = fb_event->data; + new_status = *blank ? BLANK : UNBLANK; - n->old_status = new_status; + if (new_status == n->old_status) + return 0; - break; + if ((n->old_status == UNBLANK) ^ n->invert) { + n->brightness = led->brightness; + __led_set_brightness(led, LED_OFF); + } else { + __led_set_brightness(led, n->brightness); } + n->old_status = new_status; + return 0; } |