From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Jindal, Sonika" <sonika.jindal@intel.com>
Subject: Re: [PATCH 3/3] drm/i915: Check live status before
 reading edid
Date: Wed, 15 Jul 2015 09:25:55 +0530
Message-ID: <55A5D9CB.6050702@intel.com>
References: <1436874683-24090-1-git-send-email-sonika.jindal@intel.com>	
 <1436874683-24090-4-git-send-email-sonika.jindal@intel.com>
 <1436884184.10749.47.camel@intel.com>
Mime-Version: 1.0
Content-Type: text/plain; charset="utf-8"; Format="flowed"
Content-Transfer-Encoding: base64
Return-path: <intel-gfx-bounces@lists.freedesktop.org>
Received: from mga01.intel.com (mga01.intel.com [192.55.52.88])
 by gabe.freedesktop.org (Postfix) with ESMTP id 5E7146E0D6
 for <intel-gfx@lists.freedesktop.org>; Tue, 14 Jul 2015 20:55:58 -0700 (PDT)
In-Reply-To: <1436884184.10749.47.camel@intel.com>
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: imre.deak@intel.com
Cc: intel-gfx@lists.freedesktop.org
List-Id: intel-gfx@lists.freedesktop.org
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