From mboxrd@z Thu Jan  1 00:00:00 1970
From: Imre Deak <imre.deak@intel.com>
Subject: Re: [PATCH 2/4] drm/i915/lspcon: Fix resume time
 initialization due to unasserted HPD
Date: Sun, 29 Jan 2017 18:13:50 +0200
Message-ID: <20170129161350.GA16603@ideak-desk.fi.intel.com>
References: <1485509961-9010-1-git-send-email-imre.deak@intel.com>
 <1485509961-9010-3-git-send-email-imre.deak@intel.com>
 <ca99d59c-e852-c775-75be-fcdb9ef74f3b@intel.com>
 <20170128081742.GB32065@ideak-desk.fi.intel.com>
 <46bb02bb-a555-e2f7-dc80-0d0cdfd8cd45@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 mga02.intel.com (mga02.intel.com [134.134.136.20])
 by gabe.freedesktop.org (Postfix) with ESMTPS id EB203887B3
 for <intel-gfx@lists.freedesktop.org>; Sun, 29 Jan 2017 16:13:54 +0000 (UTC)
Content-Disposition: inline
In-Reply-To: <46bb02bb-a555-e2f7-dc80-0d0cdfd8cd45@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: "Sharma, Shashank" <shashank.sharma@intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>, intel-gfx@lists.freedesktop.org, stable@vger.kernel.org
List-Id: intel-gfx@lists.freedesktop.org
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