linux-kernel - mtd/m25p80: Device search issue

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Date:	Thu, 11 Aug 2011 13:36:35 +0900
From:	Tomoya MORINAGA <tomoya-linux@....okisemi.com>
To:	dwmw2@...radead.org, linux-mtd@...ts.infradead.org,
	linux-kernel@...r.kernel.org
CC:	"toshiharu-linux@....okisemi.com" <toshiharu-linux@....okisemi.com>
Subject: mtd/m25p80: Device search issue

Hi,

I have a question.
We've faced issue when connecting SPI Flash memory "SST25VF016B" via
SPI_TOPCLIFF_PCH, the Flash is not detected.
The cause is that jedec_probe fails in m25p80.


m25p80.c
static const struct spi_device_id *__devinit jedec_probe(struct
spi_device *spi)
{

...

	jedec = id[0];
	jedec = jedec << 8;
	jedec |= id[1];
	jedec = jedec << 8;
	jedec |= id[2];

...

After the above calculation,
jedec becomes "bf25".

I think jedec must be "bf2541", right ?
Let me know what's wrong?

Thanks in advance.
-- 
tomoya
OKI SEMICONDUCTOR CO., LTD.
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