From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Srivatsa, Anusha" <anusha.srivatsa@intel.com>
Subject: Re: [PATCH] drm/i915/cnp: Backlight support for CNP.
Date: Fri, 5 May 2017 16:33:18 +0000
Message-ID: <83F5C7385F545743AD4FB2A62F75B073019BEB82@ORSMSX108.amr.corp.intel.com>
References: <87d1c9vqfg.fsf@intel.com>
 <1493855051-23056-1-git-send-email-anusha.srivatsa@intel.com>
 <87fuglotyi.fsf@intel.com>
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 mga06.intel.com (mga06.intel.com [134.134.136.31])
 by gabe.freedesktop.org (Postfix) with ESMTPS id 247B66E6E3
 for <intel-gfx@lists.freedesktop.org>; Fri,  5 May 2017 16:33:21 +0000 (UTC)
In-Reply-To: <87fuglotyi.fsf@intel.com>
Content-Language: en-US
List-Unsubscribe: <https://lists.freedesktop.org/mailman/options/intel-gfx>,
 <mailto:intel-gfx-request@lists.freedesktop.org?subject=unsubscribe>
List-Archive: <https://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: <https://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: "Nikula, Jani" <jani.nikula@intel.com>, "intel-gfx@lists.freedesktop.org" <intel-gfx@lists.freedesktop.org>
Cc: "Vivi, Rodrigo" <rodrigo.vivi@intel.com>
List-Id: intel-gfx@lists.freedesktop.org
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