From mboxrd@z Thu Jan  1 00:00:00 1970
From: Yakir Yang <ykk@rock-chips.com>
Subject: Re: drm: bridge: analogix/dp: Fix the possible dead lock in bridge
 disable time
Date: Thu, 7 Apr 2016 11:07:55 +0800
Message-ID: <5705CF0B.50904@rock-chips.com>
References: <20160406194152.GA28319@mwanda>
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>
Received: from lucky1.263xmail.com (lucky1.263xmail.com [211.157.147.130])
 by gabe.freedesktop.org (Postfix) with ESMTPS id 8B3366E364
 for <dri-devel@lists.freedesktop.org>; Thu,  7 Apr 2016 03:08:01 +0000 (UTC)
In-Reply-To: <20160406194152.GA28319@mwanda>
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: Dan Carpenter <dan.carpenter@oracle.com>
Cc: dri-devel@lists.freedesktop.org
List-Id: dri-devel@lists.freedesktop.org
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==