From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Pandiyan, Dhinakaran" <dhinakaran.pandiyan@intel.com>
Subject: Re: [PATCH 3/6] drm/i915: Exit PSR before do a aux
 transaction in gen < 9
Date: Tue, 27 Feb 2018 20:35:54 +0000
Message-ID: <1519765166.11187.85.camel@dk-H97M-D3H>
References: <20180224020311.14813-1-jose.souza@intel.com>
 <20180224020311.14813-3-jose.souza@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 mga17.intel.com (mga17.intel.com [192.55.52.151])
 by gabe.freedesktop.org (Postfix) with ESMTPS id A91926E7F6
 for <intel-gfx@lists.freedesktop.org>; Tue, 27 Feb 2018 20:35:56 +0000 (UTC)
In-Reply-To: <20180224020311.14813-3-jose.souza@intel.com>
Content-Language: en-US
Content-ID: <CD800E843CCFDD41A65C8CAB886BA7E4@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: "ville.syrjala@linux.intel.com" <ville.syrjala@linux.intel.com>, "Vivi,
 Rodrigo" <rodrigo.vivi@intel.com>, "Souza, Jose" <jose.souza@intel.com>
Cc: "intel-gfx@lists.freedesktop.org" <intel-gfx@lists.freedesktop.org>
List-Id: intel-gfx@lists.freedesktop.org
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