linux-kernel - RE: spi_topcliff

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Date:	Tue, 22 Feb 2011 21:00:32 +0900
From:	"Tomoya MORINAGA" <tomoya-linux@....okisemi.com>
To:	"'David Brownell'" <dbrownell@...rs.sourceforge.net>,
	"'Grant Likely'" <grant.likely@...retlab.ca>,
	<spi-devel-general@...ts.sourceforge.net>,
	<linux-kernel@...r.kernel.org>
Cc:	<qi.wang@...el.com>, <yong.y.wang@...el.com>,
	<joel.clark@...el.com>, <kok.howg.ewe@...el.com>,
	"Toshiharu Okada" <toshiharu-linux@....okisemi.com>
Subject: RE: spi_topcliff_pch: reload issue

Hi,

Previous my question included mistake.
I show modified below.

insmod spi_topcliff_pch.ko(Then, both /dev/spidev0.0/1.0 are created with success) 
rmmod spi_topcliff_pch.ko (Then,  both /dev/spidev0.0/1.0 are NOT deleted.) 
insmod spi_topcliff_pch.ko(Then, kernel error occurred. Attached err_log)

I attached source code(power management is not updated) and kernel error log.

Do you have any information about the above ?

With Best Regards,
-----------------------------------------
Tomoya MORINAGA
OKI SEMICONDUCTOR CO., LTD.

> -----Original Message-----
> From: Tomoya MORINAGA [mailto:morinaga526@....okisemi.com] 
> Sent: Tuesday, February 22, 2011 10:22 AM
> To: 'David Brownell'; 'Grant Likely'; 
> 'spi-devel-general@...ts.sourceforge.net'; 
> 'linux-kernel@...r.kernel.org'
> Cc: 'qi.wang@...el.com'; 'yong.y.wang@...el.com'; 
> 'joel.clark@...el.com'; 'kok.howg.ewe@...el.com'; Toshiharu Okada
> Subject: spi_topcliff_pch: reload issue
> 
> Hi,
> 
> issue: after reload the spi module, it can't do SPI communication.
> 
> We have faced issue when execute the following command.
> insmod xxx.ko(Then, /dev/spidev0.0 is created with success) 
> rmmod xxx.ko (Then, /dev/spidev0.0 is deleted with success) 
> insmod xxx.ko(Then, /dev/spidev0.0 is created, however, below 
> error message is showed)
> 
>   0000:02:0c.1: registered master spi0
>   0000:02:0c.1: chipselect 0 already in use
>   0000:02:0c.1: can't create new device for spidev
> 
> Do you have any information about the above ?
> 
> kernel=2.6.37 on FC14
> 
> With Best Regards,
> -----------------------------------------
> Tomoya MORINAGA
> OKI SEMICONDUCTOR CO., LTD.

View attachment "spi_topcliff_pch.c" of type "text/plain" (35078 bytes)

Download attachment "err_log" of type "application/octet-stream" (6136 bytes)