[PATCH] drm: deprecate driver date

[Daniel Vetter]

On Mon, Apr 29, 2024 at 08:53:15PM +0300, Jani Nikula wrote:
> On Mon, 29 Apr 2024, Hamza Mahfooz <hamza.mahfooz at amd.com> wrote:
> > On 4/29/24 12:43, Jani Nikula wrote:
> >> The driver date serves no useful purpose, because it's hardly ever
> >> updated. The information is misleading at best.
> >> 
> >> As described in Documentation/gpu/drm-internals.rst:
> >> 
> >>    The driver date, formatted as YYYYMMDD, is meant to identify the date
> >>    of the latest modification to the driver. However, as most drivers
> >>    fail to update it, its value is mostly useless. The DRM core prints it
> >>    to the kernel log at initialization time and passes it to userspace
> >>    through the DRM_IOCTL_VERSION ioctl.
> >> 
> >> Stop printing the driver date at init, and start returning the empty
> >> string "" as driver date through the DRM_IOCTL_VERSION ioctl.
> >> 
> >> The driver date initialization in drivers and the struct drm_driver date
> >> member can be removed in follow-up.
> >> 
> >> Signed-off-by: Jani Nikula <jani.nikula at intel.com>
> >
> > I would prefer if it was dropped entirely in this patch, but if you feel
> > that would require too much back and forth, I'm okay with what is
> > currently proposed.
> 
> I can if that's what people prefer, but decided to start with this for
> the inevitable discussion before putting in the effort. ;)

Might also be a good idea to wait a bit in case there's any regression
reports for really old userspace. But I guess there's not a high chance
for that to happen here, so imo fine to just go ahead right away.
-Sima

> 
> > Reviewed-by: Hamza Mahfooz <hamza.mahfooz at amd.com>
> 
> Thanks,
> Jani.
> 
> 
> -- 
> Jani Nikula, Intel

-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch