From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Thulasimani, Sivakumar" <sivakumar.thulasimani@intel.com>
Subject: Re: [PATCH 1/2] drm/i915/BXT: Fixed COS blanking issue
Date: Wed, 3 Feb 2016 07:19:08 +0530
Message-ID: <56B15C94.2070403@intel.com>
References: <1454435657-29027-1-git-send-email-ramalingam.c@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 mga14.intel.com (mga14.intel.com [192.55.52.115])
 by gabe.freedesktop.org (Postfix) with ESMTP id 559F96E058
 for <intel-gfx@lists.freedesktop.org>; Tue,  2 Feb 2016 17:49:11 -0800 (PST)
In-Reply-To: <1454435657-29027-1-git-send-email-ramalingam.c@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: Ramalingam C <ramalingam.c@intel.com>, intel-gfx@lists.freedesktop.org
Cc: jani.nikula@intel.com
List-Id: intel-gfx@lists.freedesktop.org
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==