From mboxrd@z Thu Jan  1 00:00:00 1970
From: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Subject: [PATCH 3/3] drm/i915/icl: Disable master intr before
 reading
Date: Mon, 15 Oct 2018 17:14:40 +0300
Message-ID: <20181015141440.21845-3-mika.kuoppala@linux.intel.com>
References: <20181015141440.21845-1-mika.kuoppala@linux.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 mga18.intel.com (mga18.intel.com [134.134.136.126])
 by gabe.freedesktop.org (Postfix) with ESMTPS id D468389ED3
 for <intel-gfx@lists.freedesktop.org>; Mon, 15 Oct 2018 14:15:17 +0000 (UTC)
In-Reply-To: <20181015141440.21845-1-mika.kuoppala@linux.intel.com>
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: intel-gfx@lists.freedesktop.org
List-Id: intel-gfx@lists.freedesktop.org
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==