From mboxrd@z Thu Jan  1 00:00:00 1970
From: Daniel Vetter <daniel@ffwll.ch>
Subject: Re: [PATCH] drm/i915: fix fdi related fifo underruns on
 hsw
Date: Tue, 1 Dec 2015 09:21:13 +0100
Message-ID: <20151201082113.GH17050@phenom.ffwll.local>
References: <1448705139-12534-1-git-send-email-daniel.vetter@ffwll.ch>
 <1448957701.2984.8.camel@sorvi>
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 mail-wm0-f54.google.com (mail-wm0-f54.google.com [74.125.82.54])
 by gabe.freedesktop.org (Postfix) with ESMTPS id B61C2720BD
 for <intel-gfx@lists.freedesktop.org>; Tue,  1 Dec 2015 00:21:17 -0800 (PST)
Received: by wmec201 with SMTP id c201so193011058wme.0
 for <intel-gfx@lists.freedesktop.org>; Tue, 01 Dec 2015 00:21:16 -0800 (PST)
Content-Disposition: inline
In-Reply-To: <1448957701.2984.8.camel@sorvi>
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: Mika Kahola <mika.kahola@intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>, Intel Graphics Development <intel-gfx@lists.freedesktop.org>
List-Id: intel-gfx@lists.freedesktop.org
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