[Bug 61811] kms mode breaks when using radeon.agpmode=-1

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=61811

--- Comment #10 from Alex Deucher <alexdeucher at gmail.com> ---
(In reply to Dieter Nützel from comment #8)
> (In reply to Alex Deucher from comment #6)
> > Can you bisect?
> 
> Hello Alex,
> 
> I'll try 'cause I get the same with clean 3.12-rc2 +
> 0001-drm-radeon-avoid-UVD-corruption-on-AGP-cards-using-G.patch
> 
> radeon.agpmode=8 works as before, but
> radeon.agpmode=-1 gave
> 
> [-]
> [   10.958649] radeon: `-1' invalid for parameter `agpmode'
> [   11.515274] radeon: `-1' invalid for parameter `agpmode'
> FATAL: Error inserting radeon
> (/lib/modules/3.12.0-rc2-1-desktop/kernel/drivers/gpu/drm/radeon/radeon.ko):
> Invalid argument
> 

We haven't touched anything AGP related in radeon in years.  Maybe some general
kernel module parsing change?

> 
> Any point to start without git-tree?

You really need a git tree to bisect.

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