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Message-Id: <201504302043.11118.marex@denx.de>
Date: Thu, 30 Apr 2015 20:43:11 +0200
From: Marek Vasut <marex@...x.de>
To: Michal Suchanek <hramrach@...il.com>
Cc: linux-sunxi@...glegroups.com, Rob Herring <robh+dt@...nel.org>,
Pawel Moll <pawel.moll@....com>,
Mark Rutland <mark.rutland@....com>,
Ian Campbell <ijc+devicetree@...lion.org.uk>,
Kumar Gala <galak@...eaurora.org>,
David Woodhouse <dwmw2@...radead.org>,
Brian Norris <computersforpeace@...il.com>,
Huang Shijie <b32955@...escale.com>,
" Rafał Miłecki"
<zajec5@...il.com>, Ben Hutchings <ben@...adent.org.uk>,
Alison Chaiken <alison_chaiken@...tor.com>,
Mika Westerberg <mika.westerberg@...ux.intel.com>,
"Bean Huo 霍斌斌 \(beanhuo\)"
<beanhuo@...ron.com>, "grmoore@...era.com" <grmoore@...era.com>,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-mtd@...ts.infradead.org
Subject: Re: [PATCH 1/3] MTD: m25p80: fix write return value.
On Thursday, April 30, 2015 at 03:33:47 PM, Michal Suchanek wrote:
> The size of written data was added to user supplied value rather than
> written at the provided address.
You might want to work on the commit message a little, something like
the following, but feel free to reword as seen fit.
The 'retlen' points to a variable representing the number of data bytes
written/read (see include/linux/mtd/mtd.h) by the current invocation of
the function. This variable must be set, not incremented.
Otherwise, the patch is correct I believe:
Acked-by: Marek Vasut <marex@...x.de>
> Signed-off-by: Michal Suchanek <hramrach@...il.com>
> ---
> drivers/mtd/devices/m25p80.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/mtd/devices/m25p80.c b/drivers/mtd/devices/m25p80.c
> index 7c8b169..0b2bc21 100644
> --- a/drivers/mtd/devices/m25p80.c
> +++ b/drivers/mtd/devices/m25p80.c
> @@ -102,7 +102,7 @@ static void m25p80_write(struct spi_nor *nor, loff_t
> to, size_t len,
>
> spi_sync(spi, &m);
>
> - *retlen += m.actual_length - cmd_sz;
> + *retlen = m.actual_length - cmd_sz;
> }
>
> static inline unsigned int m25p80_rx_nbits(struct spi_nor *nor)
Best regards,
Marek Vasut
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