linux-kernel - Re: [PATCH] Fix i915 drm regression on AOpen i915GMm-HFS motherboard

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Date:	Mon, 03 Jan 2011 19:59:34 +0000
From:	Chris Wilson <chris@...is-wilson.co.uk>
To:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Knut Petersen <Knut_Petersen@...nline.de>
Cc:	airlied@...ux.ie, eric@...olt.net, jesse.barnes@...el.com,
	linux-kernel@...r.kernel.org,
	intel-gfx <intel-gfx@...ts.freedesktop.org>, gregkh@...e.de
Subject: Re: [PATCH] Fix i915 drm regression on AOpen i915GMm-HFS motherboard

On Mon, 3 Jan 2011 11:45:48 -0800, Linus Torvalds <torvalds@...ux-foundation.org> wrote:
> On Mon, Jan 3, 2011 at 10:12 AM, Knut Petersen
> <Knut_Petersen@...nline.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
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