From mboxrd@z Thu Jan  1 00:00:00 1970
From: Marek Vasut <marex@denx.de>
To: Michal Suchanek <hramrach@gmail.com>
Subject: Re: [PATCH 00/11] Enable access to SPI NOR flash on Samsung Snow board
Date: Thu, 4 Jun 2015 00:53:29 +0200
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Cc: Mark Rutland <mark.rutland@arm.com>,
 Krzysztof Kozlowski <k.kozlowski@samsung.com>,
 Geert Uytterhoeven <geert+renesas@glider.be>, linux-mtd@lists.infradead.org,
 Alison Chaiken <alison_chaiken@mentor.com>, "Bean Huo
 =?utf-8?q?=E9=9C=8D=E6=96=8C=E6=96=8C?= \(beanhuo\)" <beanhuo@micron.com>,
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 =?utf-8?q?Rafa=C5=82?= =?utf-8?q?_Mi=C5=82ecki?= <zajec5@gmail.com>,
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 "grmoore@altera.com" <grmoore@altera.com>, linux-kernel@vger.kernel.org,
 linux-spi@vger.kernel.org, Huang Shijie <b32955@freescale.com>,
 Rob Herring <robh+dt@kernel.org>, Han Xu <han.xu@freescale.com>,
 Knut Wohlrab <knut.wohlrab@de.bosch.com>, dmaengine@vger.kernel.org,
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On Wednesday, June 03, 2015 at 11:26:39 PM, Michal Suchanek wrote:
> Hello,

Hi,

> this patch series makes it possible to access the SPI NOR flash in the
> Samsung XE303 'Snow' Chromebook.
> 
> Unfortunately not all issues are resolved. To work around an issue with the
> pl330 dma engine I respun the patch for limiting transfer size in m25p80
> driver.

Looks like fixing a bug at the wrong place to me ...

> As the flash does not contain any sane filesystem and is only likely to be
> accessed with mtd_debug or similar tool the limit of the dma engine is
> easily reached. Filesystems using shorter data transfers are less likely
> to be affected.

Sounds like the DMA engine driver should be fixed.

Best regards,
Marek Vasut