Re: Some 7.1-post fixes that might be worth picking up rather sooner than later

[Greg KH <gregkh@linuxfoundation.org>]

On Tue, Jul 07, 2026 at 01:48:29PM +0200, Greg KH wrote:
> On Tue, Jul 07, 2026 at 12:19:20PM +0200, Thorsten Leemhuis wrote:
> > [CCing a few people]
> > 
> > On 6/22/26 07:32, Greg KH wrote:
> > > On Fri, Jun 19, 2026 at 11:43:41AM +0200, Greg KH wrote:
> > >> On Fri, Jun 19, 2026 at 08:04:35AM +0200, Thorsten Leemhuis wrote:
> > >>> Hi Stable Team! From the regressions point I think it might be nice to
> > >>> pick up the following changes for the next round of stable updates (e.g.
> > >>> 7.1.2), as they seem to fix regressions I've seen multiple people report
> > >>> with 7.1:
> > >>> [...]
> > >>> * 12f58a6caad3be ("drm/amd/display: Fix Color Manager (3DLUT, Shaper,
> > >>> Blend)") [v7.1-post]
> > > 
> > > This doesn't apply to 7.1.y, and would need a working backport.
> > Just a quick status update twimc:
> > 
> > I pointed that out in
> > https://gitlab.freedesktop.org/drm/amd/-/work_items/5396 , but nothing
> > happened from the AMD side afaics. They have much on their plate, I
> > fully understand that, I guess it fell through the cracks (maybe this
> > mail helps). Thing is: the backport of the revert is quite big, so
> > nobody else (including me) did yet dare to submit it themselves.
> > 
> > So two weeks later the regression caused by e56e3cff2a1bb2
> > ("drm/amd/display: Sync dcn42 with DC 3.2.373") [v7.1-rc1] is still
> > unfixed in 7.1.y as far as I can see it -- a regression that is known
> > since more than two months now, as the revert to fix it (12f58a6caad3be,
> > mentioned in the quote above) was submitted already on 2026-04-29, but
> > only made it to mainline during the merge window for 7.2 (this is
> > another thing that afaics fell through the cracks; sadly I only became
> > aware of the regression after 7.1 was out, otherwise I would have made
> > noise earlier to get it included in 7.1).
> 
> So should 12f58a6caad3be be added to the stable queues?

It doesn't apply cleanly, so I'd need a backported version.

thanks,

greg k-h