struct device_attribute *attr, char *buf)
{
struct led_classdev *led_cdev = dev_get_drvdata(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;
- return ret;
+ return sprintf(buf, "%u\n", led_cdev->brightness);
}
static ssize_t led_brightness_store(struct device *dev,
if (rc)
goto err_out;
+#ifdef CONFIG_LEDS_TRIGGERS
+ init_rwsem(&led_cdev->trigger_lock);
+#endif
/* add to the list of leds */
down_write(&leds_list_lock);
list_add_tail(&led_cdev->node, &leds_list);
led_update_brightness(led_cdev);
#ifdef CONFIG_LEDS_TRIGGERS
- init_rwsem(&led_cdev->trigger_lock);
-
rc = device_create_file(led_cdev->dev, &dev_attr_trigger);
if (rc)
goto err_out_led_list;
EXPORT_SYMBOL_GPL(led_classdev_register);
/**
- * __led_classdev_unregister - unregisters a object of led_properties class.
+ * led_classdev_unregister - unregisters a object of led_properties class.
* @led_cdev: the led device to unregister
*
* Unregisters a previously registered via led_classdev_register object.