return cx8802_buf_prepare(dev, (struct cx88_buffer*)vb);
return cx8802_buf_prepare(dev, (struct cx88_buffer*)vb,field);
static int dvb_buf_prepare(struct videobuf_queue *q, struct videobuf_buffer *vb,			   enum v4l2_field field){	struct cx8802_dev *dev = q->priv_data;	return cx8802_buf_prepare(dev, (struct cx88_buffer*)vb);}