linux-kernel - Re: [PATCH 6/7] mtd: spi-nor: ensure memory used for nor->read() is DMA safe

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Date:   Thu, 8 Nov 2018 14:03:44 +0100
From:   Boris Brezillon <boris.brezillon@...tlin.com>
To:     <Tudor.Ambarus@...rochip.com>
Cc:     <marek.vasut@...il.com>, <dwmw2@...radead.org>,
        <computersforpeace@...il.com>, <richard@....at>,
        <linux-mtd@...ts.infradead.org>, <linux-kernel@...r.kernel.org>,
        <yogeshnarayan.gaur@....com>, <cyrille.pitchen@...ev4u.fr>
Subject: Re: [PATCH 6/7] mtd: spi-nor: ensure memory used for nor->read() is
 DMA safe

On Thu, 8 Nov 2018 11:07:18 +0000
<Tudor.Ambarus@...rochip.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.