From mboxrd@z Thu Jan  1 00:00:00 1970
From: Paulo Zanoni <paulo.r.zanoni@intel.com>
Subject: [PATCH 3/3] drm/i915: fix FBC buffer size checks
Date: Thu,  1 Oct 2015 19:57:12 -0300
Message-ID: <1443740232-3918-1-git-send-email-paulo.r.zanoni@intel.com>
References: <1443722639.2442.22.camel@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 mga03.intel.com (mga03.intel.com [134.134.136.65])
 by gabe.freedesktop.org (Postfix) with ESMTP id 3C8866ED50
 for <intel-gfx@lists.freedesktop.org>; Thu,  1 Oct 2015 15:57:23 -0700 (PDT)
In-Reply-To: <1443722639.2442.22.camel@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: intel-gfx@lists.freedesktop.org
List-Id: intel-gfx@lists.freedesktop.org
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