From mboxrd@z Thu Jan  1 00:00:00 1970
From: Chris Wilson <chris@chris-wilson.co.uk>
Subject: Re: [PATCH] Fix i915 drm regression on AOpen i915GMm-HFS motherboard
Date: Mon, 03 Jan 2011 19:59:34 +0000
Message-ID: <849307$b0clt4@azsmga001.ch.intel.com>
References: <4D21DC41.8070408@t-online.de> <b7da2f$q1ffv6@fmsmga001.fm.intel.com> <4D22119B.9050007@t-online.de> <AANLkTikffkQJnVKzcGhEZjPqg_iQPQ+P2Bbqz7A9Unq_@mail.gmail.com>
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To: Linus Torvalds <torvalds@linux-foundation.org>, Knut Petersen <Knut_Petersen@t-online.de>
Cc: airlied@linux.ie, eric@anholt.net, jesse.barnes@intel.com, linux-kernel@vger.kernel.org, intel-gfx <intel-gfx@lists.freedesktop.org>, gregkh@suse.de
List-Id: intel-gfx@lists.freedesktop.org

On Mon, 3 Jan 2011 11:45:48 -0800, Linus Torvalds <torvalds@linux-foundation.org> wrote:
> On Mon, Jan 3, 2011 at 10:12 AM, Knut Petersen
> <Knut_Petersen@t-online.de> wrote:
> >
> > I tried 2.6.37-rc8-git2 with both patches applied.
> 
> I thought Chris meant "instead of", rather than "both". Chris?

Right, I was trying to ascertain whether the intel_lvds_ddc_probe()
correctly detected the missing panel. That function currently requires
GMBUS to differentiate between a NAK and an IO error (bitbanging just
returns EREMOTEIO regardless, iirc). So far it has been successful in
detecting one false-positive for an AOpen All-in-one and hasn't fouled
up LVDS detection for the laptops I have.
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre