int nfc_fw_download(struct nfc_dev *dev, const char *firmware_name)
{
	int rc = 0;

	pr_debug("%s do firmware %s\n", dev_name(&dev->dev), firmware_name);

	device_lock(&dev->dev);

	if (dev->shutting_down) {
		rc = -ENODEV;
	}else if (dev->dev_up) {
		rc = -EBUSY;
	}else if (!dev->ops->fw_download) {
		rc = -EOPNOTSUPP;
	}else{
		dev->fw_download_in_progress = true;
		rc = dev->ops->fw_download(dev, firmware_name);
		if (rc)
			dev->fw_download_in_progress = false;
		}

		device_unlock(&dev->dev);
		return rc;
}