From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ramalingam C <ramalingam.c@intel.com>
Subject: [PATCH v15 12/16] misc/mei/hdcp: Verify M_prime
Date: Thu, 21 Feb 2019 23:42:06 +0530
Message-ID: <1550772730-23280-13-git-send-email-ramalingam.c@intel.com>
References: <1550772730-23280-1-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: <1550772730-23280-1-git-send-email-ramalingam.c@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, dri-devel@lists.freedesktop.org, daniel.vetter@ffwll.ch, tomas.winkler@intel.com, uma.shankar@intel.com
List-Id: dri-devel@lists.freedesktop.org
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