[PATCH 3/3] media: imx: imx7-media-csi: Fail for non video-capture formats

[Laurent Pinchart]

On Fri, Mar 17, 2023 at 05:23:29PM +0000, Rui Miguel Silva wrote:
> Hi Alexander,
> thanks for the patch.
> 
> Alexander Stein <alexander.stein at ew.tq-group.com> writes:
> 
> > This driver only support V4L2_BUF_TYPE_VIDEO_CAPTURE, so fail for other
> > passed types.
> >
> > Signed-off-by: Alexander Stein <alexander.stein at ew.tq-group.com>
> > ---
> >  drivers/media/platform/nxp/imx7-media-csi.c | 8 ++++++++
> >  1 file changed, 8 insertions(+)
> >
> > diff --git a/drivers/media/platform/nxp/imx7-media-csi.c b/drivers/media/platform/nxp/imx7-media-csi.c
> > index 389d7d88b341..e470b0505d3b 100644
> > --- a/drivers/media/platform/nxp/imx7-media-csi.c
> > +++ b/drivers/media/platform/nxp/imx7-media-csi.c
> > @@ -1186,6 +1186,11 @@ __imx7_csi_video_try_fmt(struct v4l2_pix_format *pixfmt,
> >  static int imx7_csi_video_try_fmt_vid_cap(struct file *file, void *fh,
> >  					  struct v4l2_format *f)
> >  {
> > +	struct imx7_csi *csi = video_drvdata(file);
> 
> Maybe copy/paste problem csi is never used.
> 
> > +
> > +	if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
> > +		return -EINVAL;
> 
> Is this function ever called if f->type is not TYPE_VIDEO_CAPTURE?

It shouldn't, v4l_g_fmt() and v4l_s_fmt() check the type and call the
appropriate operation accordingly. I don't think this patch is needed.

> > +
> >  	__imx7_csi_video_try_fmt(&f->fmt.pix, NULL);
> >  	return 0;
> >  }
> > @@ -1196,6 +1201,9 @@ static int imx7_csi_video_s_fmt_vid_cap(struct file *file, void *fh,
> >  	struct imx7_csi *csi = video_drvdata(file);
> >  	const struct imx7_csi_pixfmt *cc;
> >  
> > +	if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
> > +		return -EINVAL;
> 
> Ditto?
> 
> Cheers,
>    Rui
> > +
> >  	if (vb2_is_busy(&csi->q)) {
> >  		dev_err(csi->dev, "%s queue busy\n", __func__);
> >  		return -EBUSY;

-- 
Regards,

Laurent Pinchart