Re: [PATCH v3 4/8] media: subdev: remove VIDIOC_DQEVENT_TIME32 handling

[Arnd Bergmann]

On Mon, Jun 14, 2021 at 7:02 PM Laurent Pinchart
<laurent.pinchart@xxxxxxxxxxxxxxxx> wrote:
>
> On Mon, Jun 14, 2021 at 12:34:05PM +0200, Arnd Bergmann wrote:
> > From: Arnd Bergmann <arnd@xxxxxxxx>
> >
> > Converting the VIDIOC_DQEVENT_TIME32/VIDIOC_DQEVENT32/
> > VIDIOC_DQEVENT32_TIME32 arguments to the canonical form is done in common
> > code, but for some reason I ended up adding another conversion helper to
> > subdev_do_ioctl() as well. I must have concluded that this does not go
> > through the common conversion, but it has done that since the ioctl
> > handler was first added.
> >
> > I assume this one is harmless as there should be no way to arrive here
> > from user space, but since it is dead code, it should just get removed.
>
> If I'm not mistaken, this could be reached when
> !CONFIG_COMPAT_32BIT_TIME, can't it ? Still, there's no need for this
> code in that case, so it seems fine to me.

Yes, that is correct, I missed that condition. We definitely should not handle
the command in that case.

Hans, since you mentioned you would pick up this patch, I assume  you
are going to reword the patch as you see fit. If you prefer me to resend it,
let me know.

       Arnd