From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ville =?iso-8859-1?Q?Syrj=E4l=E4?= <ville.syrjala@linux.intel.com>
Subject: Re: [PATCH 2/2] drm/i915: Ignore stale wm register
 values on resume on ilk-bdw
Date: Fri, 13 May 2016 20:18:18 +0300
Message-ID: <20160513171818.GF4329@intel.com>
References: <1463151318-14719-1-git-send-email-ville.syrjala@linux.intel.com>
 <1463151318-14719-3-git-send-email-ville.syrjala@linux.intel.com>
 <20160513165855.GE22371@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 mga04.intel.com (mga04.intel.com [192.55.52.120])
 by gabe.freedesktop.org (Postfix) with ESMTP id 8158C6EAD6
 for <intel-gfx@lists.freedesktop.org>; Fri, 13 May 2016 17:18:22 +0000 (UTC)
Content-Disposition: inline
In-Reply-To: <20160513165855.GE22371@intel.com>
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: Matt Roper <matthew.d.roper@intel.com>
Cc: intel-gfx@lists.freedesktop.org
List-Id: intel-gfx@lists.freedesktop.org
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