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SubjectRe: [PATCH 2/2] drm/i915: fall back to bit-banging if GMBUS fails in CRT EDID reads
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@ffwll.ch>
> Date: Tue Feb 14 22:37:25 2012 +0100
>
> drm/i915: reenable gmbus on gen3+ again
>
> and
>
> commit 0fb3f969c8683505fb7323c06bf8a999a5a45a15
> Author: Daniel Vetter <daniel.vetter@ffwll.ch>
> 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@gmail.com>
> Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=45881
> Signed-off-by: Jani Nikula <jani.nikula@intel.com>
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@ffwll.ch
Mobile: +41 (0)79 365 57 48


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