linux-kernel - Re: linux-next: build failure after merge of the drm-fixes tree

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Date:   Fri, 24 May 2019 20:15:48 +1000
From:   Stephen Rothwell <sfr@...b.auug.org.au>
To:     Daniel Vetter <daniel@...ll.ch>
Cc:     Dave Airlie <airlied@...ux.ie>,
        DRI <dri-devel@...ts.freedesktop.org>,
        Alex Deucher <alexander.deucher@....com>,
        Linux Next Mailing List <linux-next@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Nicholas Kazlauskas <nicholas.kazlauskas@....com>
Subject: Re: linux-next: build failure after merge of the drm-fixes tree

Hi Daniel,

On Fri, 24 May 2019 10:09:28 +0200 Daniel Vetter <daniel@...ll.ch> wrote:
>
> On Fri, May 24, 2019 at 12:29 AM Stephen Rothwell <sfr@...b.auug.org.au> wrote:
> >
> > After merging the drm-fixes tree, today's linux-next build (x86_64
> > allmodconfig) failed like this:
> >
> > drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm.c: In function 'load_dmcu_fw':
> > drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm.c:667:7: error: implicit declaration of function 'ASICREV_IS_PICASSO'; did you mean 'ASICREV_IS_VEGA12_P'? [-Werror=implicit-function-declaration]
> >    if (ASICREV_IS_PICASSO(adev->external_rev_id))
> >        ^~~~~~~~~~~~~~~~~~
> >        ASICREV_IS_VEGA12_P
> >
> > Caused by commit
> >
> >   55143dc23ca4 ("drm/amd/display: Don't load DMCU for Raven 1")
> >
> > I have reverted that commit for today.  
> 
> Seems to compile fine here, and Dave just sent out the pull so I guess
> works for him too. What's your .config?

See above "x86_64 allmodconfig"

Looking at it closely now, I can't see how that error comes about.

Ah, in the drm-fixes tree, the definition of  is protected by

  #if defined(CONFIG_DRM_AMD_DC_DCN1_01)

which gets removed in the amdgpu tree (merged later).  So I can only
presume that CONFIG_DRM_AMD_DC_DCN1_01 was not set for the build I did.

config DRM_AMD_DC
        bool "AMD DC - Enable new display engine"
        default y
        select DRM_AMD_DC_DCN1_0 if X86 && !(KCOV_INSTRUMENT_ALL && KCOV_ENABLE_
COMPARISONS)KCOV_INSTRUMENT_ALL && KCOV_ENABLE_COMPARISONS
        select DRM_AMD_DC_DCN1_01 if X86 && !(KCOV_INSTRUMENT_ALL && KCOV_ENABLE_COMPARISONS)

So maybe KCOV_INSTRUMENT_ALL && KCOV_ENABLE_COMPARISONS are set for
allmodconfig.  I no longer have the actual .config file any more, sorry.
-- 
Cheers,
Stephen Rothwell

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