diff options
| -rw-r--r-- | drivers/video/backlight/lcd.c | 25 |
1 files changed, 13 insertions, 12 deletions
diff --git a/drivers/video/backlight/lcd.c b/drivers/video/backlight/lcd.c index ceec90ca758b..2f57d6867d42 100644 --- a/drivers/video/backlight/lcd.c +++ b/drivers/video/backlight/lcd.c @@ -27,24 +27,25 @@ static int fb_notifier_callback(struct notifier_block *self, unsigned long event, void *data) { - struct lcd_device *ld; + struct lcd_device *ld = container_of(self, struct lcd_device, fb_notif); struct fb_event *evdata = data; + struct fb_info *info = evdata->info; + + guard(mutex)(&ld->ops_lock); - ld = container_of(self, struct lcd_device, fb_notif); if (!ld->ops) return 0; + if (ld->ops->check_fb && !ld->ops->check_fb(ld, info)) + return 0; - mutex_lock(&ld->ops_lock); - if (!ld->ops->check_fb || ld->ops->check_fb(ld, evdata->info)) { - if (event == FB_EVENT_BLANK) { - if (ld->ops->set_power) - ld->ops->set_power(ld, *(int *)evdata->data); - } else { - if (ld->ops->set_mode) - ld->ops->set_mode(ld, evdata->data); - } + if (event == FB_EVENT_BLANK) { + if (ld->ops->set_power) + ld->ops->set_power(ld, *(int *)evdata->data); + } else { + if (ld->ops->set_mode) + ld->ops->set_mode(ld, evdata->data); } - mutex_unlock(&ld->ops_lock); + return 0; } |