From mboxrd@z Thu Jan  1 00:00:00 1970
From: Daniel Vetter <daniel@ffwll.ch>
Subject: Re: [PATCH] drm/i915: Check lane sharing between pipes
 B & C using atomic state
Date: Fri, 27 Mar 2015 15:03:58 +0100
Message-ID: <20150327140357.GV23521@phenom.ffwll.local>
References: <20150327090859.GP23521@phenom.ffwll.local>
 <1427461208-26204-1-git-send-email-ander.conselvan.de.oliveira@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 mail-wi0-f182.google.com (mail-wi0-f182.google.com
 [209.85.212.182])
 by gabe.freedesktop.org (Postfix) with ESMTP id B28D16EBA6
 for <intel-gfx@lists.freedesktop.org>; Fri, 27 Mar 2015 07:02:12 -0700 (PDT)
Received: by wibgn9 with SMTP id gn9so32583389wib.1
 for <intel-gfx@lists.freedesktop.org>; Fri, 27 Mar 2015 07:02:11 -0700 (PDT)
Content-Disposition: inline
In-Reply-To: <1427461208-26204-1-git-send-email-ander.conselvan.de.oliveira@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: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Cc: intel-gfx@lists.freedesktop.org
List-Id: intel-gfx@lists.freedesktop.org
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