From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Shankar, Uma" <uma.shankar@intel.com>
Subject: Re: [PATCH v3 16/40] misc/mei/hdcp: Verify M_prime
Date: Wed, 9 May 2018 13:50:18 +0000
Message-ID: <E7C9878FBA1C6D42A1CA3F62AEB6945F7F1EF9CD@BGSMSX104.gar.corp.intel.com>
References: <1522763873-23041-1-git-send-email-ramalingam.c@intel.com>
 <1522763873-23041-17-git-send-email-ramalingam.c@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>
In-Reply-To: <1522763873-23041-17-git-send-email-ramalingam.c@intel.com>
Content-Language: en-US
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: "C, Ramalingam" <ramalingam.c@intel.com>, "intel-gfx@lists.freedesktop.org" <intel-gfx@lists.freedesktop.org>, "dri-devel@lists.freedesktop.org" <dri-devel@lists.freedesktop.org>, "seanpaul@chromium.org" <seanpaul@chromium.org>, "daniel@ffwll.ch" <daniel@ffwll.ch>, "chris@chris-wilson.co.uk" <chris@chris-wilson.co.uk>, "jani.nikula@linux.intel.com" <jani.nikula@linux.intel.com>, "Winkler, Tomas" <tomas.winkler@intel.com>, "Usyskin, Alexander" <alexander.usyskin@intel.com>
Cc: "Vivi, Rodrigo" <rodrigo.vivi@intel.com>
List-Id: dri-devel@lists.freedesktop.org
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