From mboxrd@z Thu Jan  1 00:00:00 1970
From: Marc MERLIN <marc_xorg@merlins.org>
Subject: Re: drivers/gpu/drm/i915/intel_display.c:9717
 intel_check_page_flip+0xb3/0xd2()
Date: Sat, 18 Jul 2015 13:35:53 -0700
Message-ID: <20150718203553.GE30815@merlins.org>
References: <20150715160333.GA30878@merlins.org>
Mime-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: base64
Return-path: <intel-gfx-bounces@lists.freedesktop.org>
Received: from mail1.merlins.org (magic.merlins.org [209.81.13.136])
 by gabe.freedesktop.org (Postfix) with ESMTPS id 039B56E445
 for <intel-gfx@lists.freedesktop.org>; Wed, 22 Jul 2015 05:52:38 -0700 (PDT)
Received: from [201.198.191.154] (port=56073 helo=legolas.merlins.org)
 by mail1.merlins.org with esmtpsa
 (Cipher TLS1.2:DHE_RSA_AES_128_CBC_SHA1:128) (Exim 4.80 #2)
 id 1ZHtVf-0006OD-4L by authid <merlins.org> with srv_auth_plain
 for <intel-gfx@lists.freedesktop.org>; Wed, 22 Jul 2015 05:52:37 -0700
Received: from merlin by legolas.merlins.org with local (Exim 4.80)
 (envelope-from <marc_xorg@merlins.org>) id 1ZGYpt-00057T-MM
 for intel-gfx@lists.freedesktop.org; Sat, 18 Jul 2015 13:35:53 -0700
Content-Disposition: inline
In-Reply-To: <20150715160333.GA30878@merlins.org>
List-Unsubscribe: <http://lists.freedesktop.org/mailman/options/intel-gfx>,
 <mailto:intel-gfx-request@lists.freedesktop.org?subject=unsubscribe>
List-Archive: <http://lists.freedesktop.org/archives/intel-gfx>
List-Post: <mailto:intel-gfx@lists.freedesktop.org>
List-Help: <mailto:intel-gfx-request@lists.freedesktop.org?subject=help>
List-Subscribe: <http://lists.freedesktop.org/mailman/listinfo/intel-gfx>,
 <mailto:intel-gfx-request@lists.freedesktop.org?subject=subscribe>
Errors-To: intel-gfx-bounces@lists.freedesktop.org
Sender: "Intel-gfx" <intel-gfx-bounces@lists.freedesktop.org>
To: intel-gfx@lists.freedesktop.org
List-Id: intel-gfx@lists.freedesktop.org
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