From mboxrd@z Thu Jan  1 00:00:00 1970
Received: from mail.bootlin.com ([62.4.15.54])
 by merlin.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux))
 id 1gKjyi-0001JU-J5
 for linux-mtd@lists.infradead.org; Thu, 08 Nov 2018 13:04:09 +0000
Date: Thu, 8 Nov 2018 14:03:44 +0100
From: Boris Brezillon <boris.brezillon@bootlin.com>
To: <Tudor.Ambarus@microchip.com>
Cc: <marek.vasut@gmail.com>, <dwmw2@infradead.org>,
 <computersforpeace@gmail.com>, <richard@nod.at>,
 <linux-mtd@lists.infradead.org>, <linux-kernel@vger.kernel.org>,
 <yogeshnarayan.gaur@nxp.com>, <cyrille.pitchen@wedev4u.fr>
Subject: Re: [PATCH 6/7] mtd: spi-nor: ensure memory used for nor->read() is
 DMA safe
Message-ID: <20181108140344.77dcc0e8@bbrezillon>
In-Reply-To: <20181108110653.21063-7-tudor.ambarus@microchip.com>
References: <20181108110653.21063-1-tudor.ambarus@microchip.com>
 <20181108110653.21063-7-tudor.ambarus@microchip.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
List-Id: Linux MTD discussion mailing list <linux-mtd.lists.infradead.org>
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>

On Thu, 8 Nov 2018 11:07:18 +0000
<Tudor.Ambarus@microchip.com> wrote:

> Use GFP_DMA to ensure that the memory we allocate for transfers in
> nor->read() can be DMAed.

See my comment on patch 5.