linux-kernel - Re: [PATCH] Revert "drm/amd/display: Only restore backlight after amdgpu_dm_init or dm

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <2025100959-denture-freebie-76b4@gregkh>
Date: Thu, 9 Oct 2025 12:49:06 +0200
From: Greg KH <gregkh@...uxfoundation.org>
To: Matthew Schwartz <matthew.schwartz@...ux.dev>
Cc: harry.wentland@....com, Christian.Koenig@....com, sunpeng.li@....com,
	airlied@...il.com, simona@...ll.ch, Alexander.Deucher@....com,
	linux-kernel@...r.kernel.org, mario.limonciello@....com,
	amd-gfx@...ts.freedesktop.org, stable@...r.kernel.org,
	regressions@...ts.linux.dev
Subject: Re: [PATCH] Revert "drm/amd/display: Only restore backlight after
 amdgpu_dm_init or dm_resume"

On Thu, Oct 09, 2025 at 12:00:29PM +0200, Matthew Schwartz wrote:
> 
> > 
> > On Oct 9, 2025, at 11:51 AM, Greg KH <gregkh@...uxfoundation.org> wrote:
> > 
> > On Thu, Oct 09, 2025 at 11:23:01AM +0200, Matthew Schwartz wrote:
> >> This fix regressed the original issue that commit d83c747a1225
> >> ("drm/amd/display: Fix brightness level not retained over reboot") solved,
> >> so revert it until a different approach to solve the regression that
> >> it caused with AMD_PRIVATE_COLOR is found.
> >> 
> >> Fixes: a490c8d77d50 ("drm/amd/display: Only restore backlight after amdgpu_dm_init or dm_resume")
> >> Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/4620
> >> Signed-off-by: Matthew Schwartz <matthew.schwartz@...ux.dev>
> >> ---
> >> drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 12 ++++--------
> >> drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h |  7 -------
> >> 2 files changed, 4 insertions(+), 15 deletions(-)
> > 
> > <formletter>
> > 
> > This is not the correct way to submit patches for inclusion in the
> > stable kernel tree.  Please read:
> >    https://www.kernel.org/doc/html/latest/process/stable-kernel-rules.html
> > for how to do this properly.
> 
> Apologies, I was a bit confused by:
> 
> If a regression made it into a proper mainline release during the past twelve months, ensure to tag the fix with “Cc: stable@...r.kernel.org”
> 
> in the regressions page, but I see now the way I did it via email cc was incorrect.
> 
> Should I resend with that fixed?

Please do.

thanks!

greg k-h