linux-kernel - Re: build failure of next-20220811 due to b1a63a0b48ad ("drm/amd/display: consider DSC pass-through during mode validation")

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Date:   Thu, 18 Aug 2022 08:11:26 +1000
From:   Stephen Rothwell <sfr@...b.auug.org.au>
To:     Sudip Mukherjee <sudipm.mukherjee@...il.com>
Cc:     Alex Deucher <alexander.deucher@....com>,
        Hamza Mahfooz <hamza.mahfooz@....com>,
        Fangzhi Zuo <Jerry.Zuo@....com>,
        Christian König <christian.koenig@....com>,
        "Pan, Xinhui" <Xinhui.Pan@....com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        amd-gfx mailing list <amd-gfx@...ts.freedesktop.org>,
        dri-devel <dri-devel@...ts.freedesktop.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        linux-next <linux-next@...r.kernel.org>
Subject: Re: build failure of next-20220811 due to b1a63a0b48ad
 ("drm/amd/display: consider DSC pass-through during mode validation")

Hi Sudip,

On Wed, 17 Aug 2022 21:39:17 +0100 Sudip Mukherjee <sudipm.mukherjee@...il.com> wrote:
>
> On Wed, Aug 17, 2022 at 12:43 AM Stephen Rothwell <sfr@...b.auug.org.au> wrote:
> >
> > On Fri, 12 Aug 2022 09:07:31 +1000 Stephen Rothwell <sfr@...hwell.id.au> wrote:  
> > >
> > > On Thu, 11 Aug 2022 18:10:48 +0100 "Sudip Mukherjee (Codethink)" <sudipm.mukherjee@...il.com> wrote:  
> > > >
> > > > Not sure if it has been reported, builds of riscv, alpha, s390, arm,
> > > > arm64, xtensa, mips, csky allmodconfig have failed to build next-20220811
> > > > with the error:
> > > >
> > > > ERROR: modpost: "dc_dsc_compute_bandwidth_range" [drivers/gpu/drm/amd/amdgpu/amdgpu.ko] undefined!
> > > > ERROR: modpost: "dc_dsc_get_policy_for_timing" [drivers/gpu/drm/amd/amdgpu/amdgpu.ko] undefined!
> > > >
> > > > git bisect pointed to b1a63a0b48ad ("drm/amd/display: consider DSC pass-through during mode validation")
> > > > And, reverting that commit has fixed the build failure.
> > > >
> > > > I will be happy to test any patch or provide any extra log if needed.  
> > >
> > > I have reverted that commit in today's linux-next.  
> >
> > I have removed that revert.  Sudip, can you recheck when linux-next is
> > released, please?  
> 
> The build failure is not seen with next-20220817.

Excellent, thanks.

-- 
Cheers,
Stephen Rothwell

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