Re: Drop "drm/amd/display: Add AV mute wait frames to dce110_set_avmute" from stable queues

On Sun, Aug 09, 2026 at 06:33:56PM +0200, Viktor Jägersküpper wrote:
> On 8/7/26 15:13, Greg Kroah-Hartman wrote:
> > On Thu, Aug 06, 2026 at 10:10:00PM +0200, Viktor Jägersküpper wrote:
> >> Hi Greg and Sasha,
> >>
> >> I noticed that the following patch is in the queues for the 7.1, 6.18 and 6.12
> >> stable trees:
> >>
> >> >From 443290d70b01e9c35830c300e3247c06581b594c Mon Sep 17 00:00:00 2001
> >> From: Ray Wu <[email protected]>
> >> Date: Mon, 13 Jul 2026 22:23:34 +0800
> >> Subject: drm/amd/display: Add AV mute wait frames to dce110_set_avmute
> >>
> >> From: Ray Wu <[email protected]>
> >>
> >> commit 443290d70b01e9c35830c300e3247c06581b594c upstream.
> >>
> >> Port the three-frame wait logic from dcn30_set_avmute to
> >> dce110_set_avmute so that older DCN versions (1.0, 2.0) also
> >> wait for GCP packets to be sent out before proceeding.
> >>
> >> This ensures HDMI sinks properly process the mute state,
> >> preventing garbled display after link re-establishment.
> >>
> >> Closes: https://gitlab.freedesktop.org/drm/amd/-/work_items/5167
> >> Reviewed-by: Wayne Lin <[email protected]>
> >> Signed-off-by: Ray Wu <[email protected]>
> >> Signed-off-by: Fangzhi Zuo <[email protected]>
> >> Tested-by: Dan Wheeler <[email protected]>
> >> Signed-off-by: Alex Deucher <[email protected]>
> >> (cherry picked from commit 414da24137ace80d8c59fefd43ba3ec9f5f854ba)
> >> Cc: [email protected]
> >> Signed-off-by: Greg Kroah-Hartman <[email protected]>
> >> ---
> 
> (...)
> 
> >> Please drop this patch because it leads to a regression which I reported for the
> >> mainline kernel here:
> >> https://gitlab.freedesktop.org/drm/amd/-/work_items/5557
> >>
> >> A fix for the regression is already available, but it hasn't landed in the
> >> mainline tree yet. Since the patch above fixes an annoying issue, I propose to
> >> postpone it until the mainline tree has the fix so that both patches can be
> >> applied to the stable trees in the same release. I will notify you when that
> >> can be done.
> > 
> > Now dropped from all queues, thanks.
> > 
> > greg k-h
> 
> The fix for the regression has landed in the mainline tree, so you can
> now backport
> 
> 443290d70b01e9c35830c300e3247c06581b594c
> drm/amd/display: Add AV mute wait frames to dce110_set_avmute
> 
> and
> 
> 3141e3d61469bba2624a91c5e2407f110b33b29e
> drm/amd/display: Check for tg ops in dce110_set_avmute
> 
> to the stable kernels (7.1, 6.18 and 6.12), both have 'Cc: stable'. Note
> that the 'Fixes' tag in the second commit refers to a commit on the
> drm-next branch and not the corresponding commit from the drm-fixes
> branch, which might be confusing.

It's more than "confusing", it's flat out wrong and breaks all of our
tooling, which guarantees that we miss fixes like this...

{sigh}

I'll consider queueing these up in a future release if we get the
chance.

thanks,

greg k-h