Re: [PATCH 2/2] drm/i915: fall back to bit-banging if GMBUS fails in CRT EDID reads

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On Mon, Aug 13, 2012 at 01:22:35PM +0300, Jani Nikula wrote:
> GMBUS was enabled over bit-banging as the default in commits:
> 
> commit c3dfefa0a6d235bd465309e12f4c56ea16e71111
> Author: Daniel Vetter <daniel.vetter@xxxxxxxx>
> Date:   Tue Feb 14 22:37:25 2012 +0100
> 
>     drm/i915: reenable gmbus on gen3+ again
> 
> and
> 
> commit 0fb3f969c8683505fb7323c06bf8a999a5a45a15
> Author: Daniel Vetter <daniel.vetter@xxxxxxxx>
> Date:   Fri Mar 2 19:38:30 2012 +0100
> 
>     drm/i915: enable gmbus on gen2
> 
> Unfortunately, GMBUS seems to fail on some CRT displays. Add a bit-banging
> fallback to CRT EDID reads.
> 
> LKML-Reference: <201207251020.47637.maciej.rutecki@xxxxxxxxx>
> Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=45881
> Signed-off-by: Jani Nikula <jani.nikula@xxxxxxxxx>
Patches applied to -fixes with the tested-by result from the bug report.
I've also put a cc: stable on both of them, since the regression is
already in 3.4.

Thanks, Daniel
-- 
Daniel Vetter
Mail: daniel@xxxxxxxx
Mobile: +41 (0)79 365 57 48
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