return cx8802_buf_prepare(fh->dev, (struct cx88_buffer*)vb);
return cx8802_buf_prepare(fh->dev, (struct cx88_buffer*)vb, field);
bb_buf_prepare(struct videobuf_queue *q, struct videobuf_buffer *vb,	       enum v4l2_field field){	struct cx8802_fh *fh = q->priv_data;	return cx8802_buf_prepare(fh->dev, (struct cx88_buffer*)vb);}