From mboxrd@z Thu Jan  1 00:00:00 1970
From: Imre Deak <imre.deak@intel.com>
Subject: Re: [PATCH v4 4/8] drm/i915/skl: Assert the
 requirements to enter or exit DC5.
Date: Thu, 30 Apr 2015 16:26:11 +0300
Message-ID: <1430400371.9584.11.camel@intel.com>
References: <1429174334-12089-1-git-send-email-animesh.manna@intel.com>
 <1429174334-12089-5-git-send-email-animesh.manna@intel.com>
Reply-To: imre.deak@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 mga11.intel.com (mga11.intel.com [192.55.52.93])
 by gabe.freedesktop.org (Postfix) with ESMTP id 5452A6E12A
 for <intel-gfx@lists.freedesktop.org>; Thu, 30 Apr 2015 06:26:13 -0700 (PDT)
In-Reply-To: <1429174334-12089-5-git-send-email-animesh.manna@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: Animesh Manna <animesh.manna@intel.com>
Cc: Suketu Shah <suketu.j.shah@intel.com>, intel-gfx@lists.freedesktop.org
List-Id: intel-gfx@lists.freedesktop.org
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