nfc_register_device
r = nfc_register_device(priv->nfc_dev);
rc = nfc_register_device(priv->nfc_dev);
int nfc_register_device(struct nfc_dev *dev);
EXPORT_SYMBOL(nfc_register_device);
return nfc_register_device(ddev->nfc_dev);
return nfc_register_device(hdev->ndev);
rc = nfc_register_device(ndev->nfc_dev);