From mboxrd@z Thu Jan  1 00:00:00 1970
From: Sandy Huang <hjc@rock-chips.com>
Subject: Re: [PATCH] drm/rockchip: fix VOP vblank race
Date: Tue, 17 Apr 2018 09:28:27 +0800
Message-ID: <22fcc7f7-c71d-09e0-accf-fb790cf24414@rock-chips.com>
References: <20180328160351.23763-1-john@metanate.com>
 <38a49065-4667-4d91-3191-ec81b03cba44@rock-chips.com>
 <20180416174656.6c113081.john@metanate.com> <3779920.ZoukgOgWSN@phil>
Mime-Version: 1.0
Content-Type: text/plain; charset="utf-8"; Format="flowed"
Content-Transfer-Encoding: base64
Return-path: <dri-devel-bounces@lists.freedesktop.org>
In-Reply-To: <3779920.ZoukgOgWSN@phil>
List-Unsubscribe: <https://lists.freedesktop.org/mailman/options/dri-devel>,
 <mailto:dri-devel-request@lists.freedesktop.org?subject=unsubscribe>
List-Archive: <https://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: <https://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: Heiko Stuebner <heiko@sntech.de>, John Keeping <john@metanate.com>
Cc: linux-rockchip@lists.infradead.org, linux-arm-kernel@lists.infradead.org, dri-devel@lists.freedesktop.org
List-Id: linux-rockchip.vger.kernel.org
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