diff options
Diffstat (limited to 'drivers/leds/led-class.c')
| -rw-r--r-- | drivers/leds/led-class.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/leds/led-class.c b/drivers/leds/led-class.c index 63aad90247c..ac05a928f76 100644 --- a/drivers/leds/led-class.c +++ b/drivers/leds/led-class.c @@ -24,6 +24,12 @@ static struct class *leds_class; +static void led_update_brightness(struct led_classdev *led_cdev) +{ + if (led_cdev->brightness_get) + led_cdev->brightness = led_cdev->brightness_get(led_cdev); +} + static ssize_t led_brightness_show(struct device *dev, struct device_attribute *attr, char *buf) { @@ -31,6 +37,7 @@ static ssize_t led_brightness_show(struct device *dev, ssize_t ret = 0; /* no lock needed for this */ + led_update_brightness(led_cdev); sprintf(buf, "%u\n", led_cdev->brightness); ret = strlen(buf) + 1; @@ -51,6 +58,9 @@ static ssize_t led_brightness_store(struct device *dev, if (count == size) { ret = count; + + if (state == LED_OFF) + led_trigger_remove(led_cdev); led_set_brightness(led_cdev, state); } @@ -110,6 +120,8 @@ int led_classdev_register(struct device *parent, struct led_classdev *led_cdev) list_add_tail(&led_cdev->node, &leds_list); up_write(&leds_list_lock); + led_update_brightness(led_cdev); + #ifdef CONFIG_LEDS_TRIGGERS init_rwsem(&led_cdev->trigger_lock); |