&lm3639_bled_ops, &props);
        if (IS_ERR(pchip->bled)) {
                dev_err(&client->dev, "fail : backlight register\n");
-               ret = -EIO;
+               ret = PTR_ERR(pchip->bled);
                goto err_out;
        }
 
        ret = device_create_file(&(pchip->bled->dev), &dev_attr_bled_mode);
        if (ret < 0) {
                dev_err(&client->dev, "failed : add sysfs entries\n");
-               ret = -EIO;
                goto err_bled_mode;
        }
 
                                    &client->dev, &pchip->cdev_flash);
        if (ret < 0) {
                dev_err(&client->dev, "fail : flash register\n");
-               ret = -EIO;
                goto err_flash;
        }
 
                                    &client->dev, &pchip->cdev_torch);
        if (ret < 0) {
                dev_err(&client->dev, "fail : torch register\n");
-               ret = -EIO;
                goto err_torch;
        }