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 2/3] drm/i915: Wait for pending modesets to
 complete before trying link training
Date: Thu, 26 Jan 2017 20:31:58 +0200
Message-ID: <20170126183158.GM31595@intel.com>
References: <1483981618-10233-1-git-send-email-maarten.lankhorst@linux.intel.com>
 <1483981618-10233-3-git-send-email-maarten.lankhorst@linux.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>
Content-Disposition: inline
In-Reply-To: <1483981618-10233-3-git-send-email-maarten.lankhorst@linux.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: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org
List-Id: intel-gfx@lists.freedesktop.org
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