I don't think it does. It doesn't look like the method is actually using the 'brightness' argument. It's just reading the ACPI status bits to update the curren

I don't think it does. It doesn't look like the method is actually using the 'brightness' argument. It's just reading the ACPI status bits to update the current state. It doesn't set anything. static int micmute_led_set(struct led_classdev *led_cdev, enum led_brightness brightness) { acpi_status status; status = acpi_evaluate_object(NULL, ACPI_PRIVACY_EC_ACK, NULL, NULL); if (ACPI_FAILURE(status)) { dev_err(led_cdev->dev, "Error setting privacy audio EC ack value: %d\n",status); return -EIO; } return 0; }