From mboxrd@z Thu Jan  1 00:00:00 1970
From: Boris Brezillon <boris.brezillon@free-electrons.com>
Subject: Re: [RFC PATCH 1/2] mtd: spi-nor: Introduce bounce buffer to handle
 vmalloc'd buffers
Date: Wed, 1 Mar 2017 11:18:05 +0100
Message-ID: <20170301111805.0eb23b76@bbrezillon>
References: <20170227120839.16545-1-vigneshr@ti.com>
 <20170227120839.16545-2-vigneshr@ti.com>
 <8e441369-5c15-d711-1789-b55eadf33c8f@nod.at>
 <65b4a156-f2a8-4c5e-4399-2024a147d5ec@atmel.com>
Mime-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: base64
Cc: Frode Isaksen <fisaksen@baylibre.com>, linux-omap@vger.kernel.org,
 Vignesh R <vigneshr@ti.com>, Richard Weinberger <richard@nod.at>,
 linux-kernel@vger.kernel.org, linux-spi@vger.kernel.org,
 Marek Vasut <marek.vasut@gmail.com>, linux-mtd@lists.infradead.org,
 Brian Norris <computersforpeace@gmail.com>,
 David Woodhouse <dwmw2@infradead.org>
To: Cyrille Pitchen <cyrille.pitchen@atmel.com>
Return-path: <linux-mtd-bounces+gldm-linux-mtd-36=gmane.org@lists.infradead.org>
In-Reply-To: <65b4a156-f2a8-4c5e-4399-2024a147d5ec@atmel.com>
List-Unsubscribe: <http://lists.infradead.org/mailman/options/linux-mtd>,
 <mailto:linux-mtd-request@lists.infradead.org?subject=unsubscribe>
List-Archive: <http://lists.infradead.org/pipermail/linux-mtd/>
List-Post: <mailto:linux-mtd@lists.infradead.org>
List-Help: <mailto:linux-mtd-request@lists.infradead.org?subject=help>
List-Subscribe: <http://lists.infradead.org/mailman/listinfo/linux-mtd>,
 <mailto:linux-mtd-request@lists.infradead.org?subject=subscribe>
Sender: "linux-mtd" <linux-mtd-bounces@lists.infradead.org>
Errors-To: linux-mtd-bounces+gldm-linux-mtd-36=gmane.org@lists.infradead.org
List-Id: linux-spi.vger.kernel.org
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