vb2_prepare_buf
return vb2_prepare_buf(vdev->queue, vdev->v4l2_dev->mdev, p);
EXPORT_SYMBOL_GPL(vb2_prepare_buf);
return vb2_prepare_buf(&vp->vb_queue, vp->vdev.v4l2_dev->mdev, b);
ret = vb2_prepare_buf(&vfh->queue, video->video.v4l2_dev->mdev, b);
ret = vb2_prepare_buf(vq, vdev->v4l2_dev->mdev, buf);
int vb2_prepare_buf(struct vb2_queue *q, struct media_device *mdev,