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Date:   Tue, 15 Dec 2020 11:18:48 -0500
From:   Alex Deucher <alexdeucher@...il.com>
To:     Rodrigo Siqueira <Rodrigo.Siqueira@....com>
Cc:     Borislav Petkov <bp@...en8.de>,
        Alex Deucher <alexander.deucher@....com>,
        Tony Cheng <Tony.Cheng@....com>,
        Chiawen Huang <chiawen.huang@....com>,
        LKML <linux-kernel@...r.kernel.org>,
        amd-gfx list <amd-gfx@...ts.freedesktop.org>
Subject: Re: 8353d30e747f ("drm/amd/display: disable stream if pixel clock
 changed with link active")

On Tue, Dec 15, 2020 at 11:07 AM Rodrigo Siqueira
<Rodrigo.Siqueira@....com> wrote:
>
> Hi,
>
> Could you try on Alex's repo?
>
>  git://people.freedesktop.org/~agd5f/linux
>  branch: amd-staging-drm-next
>
> My patch should apply without any issue on top of this branch.

Can you help me identify what patches we need to backport to 5.10?
Depending on the patches, it might be easier to just revert this for
5.10 and apply the proper fix for 5.11.

Alex


>
> Thanks
>
> On 12/15, Borislav Petkov wrote:
> > On Tue, Dec 15, 2020 at 10:47:03AM -0500, Rodrigo Siqueira wrote:
> > > Hi Boris,
> > >
> > > Could you check if your branch has this commit:
> > >
> > >  drm/amd/display: Fix module load hangs when connected to an eDP
> > >
> > > If so, could you try this patch:
> > >
> > >  https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fpatchwork.freedesktop.org%2Fseries%2F84965%2F&amp;data=04%7C01%7CRodrigo.Siqueira%40amd.com%7C1f7ff595746543f597a708d8a111fbdd%7C3dd8961fe4884e608e11a82d994e183d%7C0%7C0%7C637436445910587407%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&amp;sdata=PESE3uBZeNjdWtIFRP6l07AyfhASpXCfaZa03l%2FFi6s%3D&amp;reserved=0
> >
> > So I did a bisection between
> >
> > git bisect start
> > # bad: [3650b228f83adda7e5ee532e2b90429c03f7b9ec] Linux 5.10-rc1
> > git bisect bad 3650b228f83adda7e5ee532e2b90429c03f7b9ec
> > # good: [bbf5c979011a099af5dc76498918ed7df445635b] Linux 5.9
> >
> > and the patch in $Subject came in in 5.10-rc1.
> >
> > I can test any tree you want me to so just tell me on which tree to
> > apply this patch and I'll run it.
> >
> > In any case, it doesn't apply on v5.10 though:
> >
> > $ test-apply.sh /tmp/rodrigo.siqueira
> > checking file drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.c
> > Hunk #1 FAILED at 120
> >
> > You can push a tree of yours somewhere which I can try directly,
> > alternatively.
> >
> > Lemme know.
> >
> > Thx.
> >
> > --
> > Regards/Gruss,
> >     Boris.
> >
> > https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fpeople.kernel.org%2Ftglx%2Fnotes-about-netiquette&amp;data=04%7C01%7CRodrigo.Siqueira%40amd.com%7C1f7ff595746543f597a708d8a111fbdd%7C3dd8961fe4884e608e11a82d994e183d%7C0%7C0%7C637436445910587407%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&amp;sdata=kiGm0%2B2d2nXiEwUs0omOYv3ZtyfwTtoD9OhrT59Dv5c%3D&amp;reserved=0
>
> --
> Rodrigo Siqueira
> https://siqueira.tech
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> amd-gfx@...ts.freedesktop.org
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