CTUCANFD_FLAG_RX_FFW_BUFFERED
clear_bit(CTUCANFD_FLAG_RX_FFW_BUFFERED, &priv->drv_flags);
if (test_bit(CTUCANFD_FLAG_RX_FFW_BUFFERED, &priv->drv_flags)) {
clear_bit(CTUCANFD_FLAG_RX_FFW_BUFFERED, &priv->drv_flags);
set_bit(CTUCANFD_FLAG_RX_FFW_BUFFERED, &priv->drv_flags);