[PATCH] media: nxp: isi: Check whether pad is non-NULL before access
Laurent Pinchart
laurent.pinchart at ideasonboard.com
Sun Dec 3 09:00:57 PST 2023
On Sat, Dec 02, 2023 at 07:44:47AM +0100, Marek Vasut wrote:
> On 12/2/23 03:27, Fabio Estevam wrote:
> > On Fri, Dec 1, 2023 at 12:06 PM Marek Vasut <marex at denx.de> wrote:
> >
> >> pad = media_pad_remote_pad_first(&xbar->pads[sink_pad]);
> >> - sd = media_entity_to_v4l2_subdev(pad->entity);
> >> + if (!pad) {
> >> + dev_dbg(xbar->isi->dev,
> >
> > Maybe dev_err() here instead?
>
> That dev_dbg() is aligned with the prints in the rest of the function
> and it's not like kernel should do dev_err() into kernel log every time
> userspace does something wrong.
We usually use dev_dbg() for errors that can be easily triggered from
userspace, to avoid giving unpriviledged processes an easy way to flood
the kernel log.
> > Anyway:
> >
> > Reviewed-by: Fabio Estevam <festevam at gmail.com>
>
> Thanks !
--
Regards,
Laurent Pinchart
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