[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 #12 from Dieter Nützel <Dieter at nuetzel-hh.de> ---
(In reply to Alex Deucher from comment #10)
> (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.

I know. ;-)

>  Maybe some general kernel module parsing change?

That was my thought, too.

> > 
> > Any point to start without git-tree?
> 
> You really need a git tree to bisect.

I know, second time, but...
...I'll see what I can find in Linus 3.12-rc1 (maybe before) patch file(s)
(logs).
For several git trees this system is to small...

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