From mboxrd@z Thu Jan  1 00:00:00 1970
From: Thierry Reding <thierry.reding@gmail.com>
Subject: [PATCH 1/3] lib/scatterlist: Add contiguous DMA chunks helpers
Date: Tue,  3 Dec 2019 17:32:01 +0100
Message-ID: <20191203163203.1486837-1-thierry.reding@gmail.com>
Mime-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: base64
Return-path: <dri-devel-bounces@lists.freedesktop.org>
List-Unsubscribe: <https://lists.freedesktop.org/mailman/options/dri-devel>,
 <mailto:dri-devel-request@lists.freedesktop.org?subject=unsubscribe>
List-Archive: <https://lists.freedesktop.org/archives/dri-devel>
List-Post: <mailto:dri-devel@lists.freedesktop.org>
List-Help: <mailto:dri-devel-request@lists.freedesktop.org?subject=help>
List-Subscribe: <https://lists.freedesktop.org/mailman/listinfo/dri-devel>,
 <mailto:dri-devel-request@lists.freedesktop.org?subject=subscribe>
Errors-To: dri-devel-bounces@lists.freedesktop.org
Sender: "dri-devel" <dri-devel-bounces@lists.freedesktop.org>
To: Thierry Reding <thierry.reding@gmail.com>
Cc: linux-tegra@vger.kernel.org, dri-devel@lists.freedesktop.org
List-Id: linux-tegra@vger.kernel.org
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