From mboxrd@z Thu Jan  1 00:00:00 1970
From: Guang Bai <guang.bai@intel.com>
Subject: Re: [PATCH] drm/i915: Fix the HDMI hot plug
 disconnection failure (v2)
Date: Wed, 10 Oct 2018 10:52:43 -0700
Message-ID: <20181010105243.4ae4f438@gbai-ub1604-LTS>
References: <CAB4CAwcGw81HR8Uhn49VX7_C8+uKSsra2-37cCGQODnOyt_qyg@mail.gmail.com>
 <1538589459-11333-1-git-send-email-guang.bai@intel.com>
 <CAB4CAwequfcJECehjvjC49EQMPO2448004jX-N9DWmRh5=JCiQ@mail.gmail.com>
 <20181008085620.5760967c@gbai-ub1604-LTS>
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 mga17.intel.com (mga17.intel.com [192.55.52.151])
 by gabe.freedesktop.org (Postfix) with ESMTPS id 7D6BF6E33D
 for <intel-gfx@lists.freedesktop.org>; Wed, 10 Oct 2018 18:04:08 +0000 (UTC)
In-Reply-To: <20181008085620.5760967c@gbai-ub1604-LTS>
List-Unsubscribe: <https://lists.freedesktop.org/mailman/options/intel-gfx>,
 <mailto:intel-gfx-request@lists.freedesktop.org?subject=unsubscribe>
List-Archive: <https://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: <https://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: Chris Chiu <chiu@endlessm.com>
Cc: Jani Nikula <jani.nikula@intel.com>, intel-gfx@lists.freedesktop.org
List-Id: intel-gfx@lists.freedesktop.org
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