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Date:	Mon, 22 Dec 2014 14:37:51 +0100
From:	Paul Bolle <pebolle@...cali.nl>
To:	Sid Boyce <sboyce@...eyonder.co.uk>
Cc:	linux-kernel@...r.kernel.org, nouveau@...ts.freedesktop.org
Subject: Re: 3.19.0-rc1 nouvea build failure on GeForce GT 610 only

Hi Sid,

On Mon, 2014-12-22 at 13:01 +0000, Sid Boyce wrote:
>    CHK     kernel/config_data.h
>    CC [M]  drivers/gpu/drm/nouveau/core/engine/dmaobj/nvd0.o
> drivers/gpu/drm/nouveau/core/engine/dmaobj/nvd0.c: In function 
> ‘nvd0_dmaobj_bind’:
> drivers/gpu/drm/nouveau/core/engine/dmaobj/nvd0.c:54:8: error: 
> ‘GM204_DISP_CORE_CHANNEL_DMA’ undeclared (first use in this function)
>     case GM204_DISP_CORE_CHANNEL_DMA:
>          ^
> drivers/gpu/drm/nouveau/core/engine/dmaobj/nvd0.c:54:8: note: each 
> undeclared identifier is reported only once for each function it appears in
> scripts/Makefile.build:257: recipe for target 
> 'drivers/gpu/drm/nouveau/core/engine/dmaobj/nvd0.o' failed
> make[4]: *** [drivers/gpu/drm/nouveau/core/engine/dmaobj/nvd0.o] Error 1
> scripts/Makefile.build:402: recipe for target 'drivers/gpu/drm/nouveau' 
> failed
> make[3]: *** [drivers/gpu/drm/nouveau] Error 2
> scripts/Makefile.build:402: recipe for target 'drivers/gpu/drm' failed
> make[2]: *** [drivers/gpu/drm] Error 2
> scripts/Makefile.build:402: recipe for target 'drivers/gpu' failed
> make[1]: *** [drivers/gpu] Error 2
> Makefile:938: recipe for target 'drivers' failed
> make: *** [drivers] Error 2
> 
> 01:00.0 VGA compatible controller: NVIDIA Corporation GF119 [GeForce GT 
> 610] (rev a1)

Why would that controller influence the build?

> No problems on 2 other boxes with GeForce 8600 GT] (rev a1)

I ran into this error twice, while building Fedora 21 kernel rpms for
v3.19-rc1 on my outdated ThinkPad X41 (which uses i915, for what it's
worth). The error made very little sense to me. Especially since it
didn't happen when building in the local git repository.

So I basically, well, scrubbed the rpmbuild environment. And then the
the third attempt to build kernels rpm succeeded! I assumed a hardware
failure (see outdated above) and made a mental note to investigate that
one of these days.

But your report makes me think it's not my hardware. Could there be some
_random_ failure with this driver in the build? Very odd...


Paul Bolle

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