From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ali Gholami Rudi <ali@rudi.ir>
Subject: Re: missing acpi backlight bisected to 9661e92c10
Date: Thu, 11 Aug 2011 14:27:56 +0000 (UTC)
Message-ID: <20112108185137@lilem.mirepesht>
References: <yunliv38ugd.fsf@aiko.keithp.com>
 <20110808213140.GA32504@srcf.ucam.org>
 <yunfwlb8qy4.fsf@aiko.keithp.com>
 <4E428421.1000605@fedoraproject.org>
 <yunipq5gvxd.fsf@aiko.keithp.com>
 <20110810191700.81c3a7ee.akpm@linux-foundation.org>
 <20112108083014@lilem.mirepesht>
 <20112108160718@lilem.mirepesht>
 <20110811123929.GA22409@srcf.ucam.org>
 <20112108181410@lilem.mirepesht>
	<20110811141630.GA24704@srcf.ucam.org>
Return-path: <linux-kernel-owner@vger.kernel.org>
Date: Thu, 21 Aug 2011 18:51:37 +0430
In-Reply-To: <20110811141630.GA24704@srcf.ucam.org>
Sender: linux-kernel-owner@vger.kernel.org
To: Matthew Garrett <mjg@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>, Keith Packard <keithp@keithp.com>, Michel Alexandre Salim <salimma@fedoraproject.org>, intel-gfx@lists.freedesktop.org, Ali Gholami Rudi <aliqrudi@gmail.com>, Richard Purdie <rpurdie@rpsys.net>, Chris Wilson <chris@chris-wilson.co.uk>, David Airlie <airlied@linux.ie>, Alex Deucher <alexdeucher@gmail.com>, Ben Skeggs <bskeggs@redhat.com>, Zhang Rui <rui.zhang@intel.com>, Len Brown <lenb@kernel.org>, Jesse Barnes <jbarnes@virtuousgeek.org>, Sedat Dilek <sedat.dilek@googlemail.com>, Linus Torvalds <torvalds@linux-foundation.org>, linux-kernel@vger.kernel.org
List-Id: intel-gfx@lists.freedesktop.org

Matthew Garrett <mjg@redhat.com> wrote:
> Well, that all looks fine. And I also can't see any way that this commit
> could cause the backlight not to appear - all it does is set the parent 
> if it's present. There's no new path that could cause it to return 
> early. Does reverting this patch really make things work?

Yes.  I'm running the patched kernel right now.

I can apply a debug patch on the unchanged kernel, if it helps?

	Ali