From mboxrd@z Thu Jan  1 00:00:00 1970
From: John Keeping <john@metanate.com>
Subject: [RFC/PATCH] drm/rockchip: don't wait for vblank if fb hasn't changed
Date: Wed, 13 Jan 2016 12:53:34 +0000
Message-ID: <1452689614-6570-1-git-send-email-john@metanate.com>
Mime-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: base64
Return-path: <dri-devel-bounces@lists.freedesktop.org>
List-Unsubscribe: <http://lists.freedesktop.org/mailman/options/dri-devel>,
 <mailto:dri-devel-request@lists.freedesktop.org?subject=unsubscribe>
List-Archive: <http://lists.freedesktop.org/archives/dri-devel>
List-Post: <mailto:dri-devel@lists.freedesktop.org>
List-Help: <mailto:dri-devel-request@lists.freedesktop.org?subject=help>
List-Subscribe: <http://lists.freedesktop.org/mailman/listinfo/dri-devel>,
 <mailto:dri-devel-request@lists.freedesktop.org?subject=subscribe>
Errors-To: dri-devel-bounces@lists.freedesktop.org
Sender: "dri-devel" <dri-devel-bounces@lists.freedesktop.org>
To: Mark Yao <mark.yao@rock-chips.com>
Cc: linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-rockchip@lists.infradead.org, linux-arm-kernel@lists.infradead.org
List-Id: linux-rockchip.vger.kernel.org
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