[#4842] multiple insmod of bf5xx_nand.ko panics

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[#4842] multiple insmod of bf5xx_nand.ko panics

Submitted By: John DeHority

Open Date

2009-01-27 15:24:13    

Priority:

Medium     Assignee:

Nobody

Status:

Open     Fixed In Release:

N/A

Found In Release:

N/A     Release:

Category:

Drivers     Board:

STAMP

Processor:

BF527     Silicon Revision:

Is this bug repeatable?:

Yes     Resolution:

N/A

Uboot version or rev.:

    Toolchain version or rev.:

GCC 4.1.2 2008R1

App binary format:

N/A     

Summary: multiple insmod of bf5xx_nand.ko panics

Details:

 

It is only possible to insmod the nand flash driver two times:

#insmod bf5xx_nand.ko

   other steps that utilize driver (mount, write file, umount)

#rmmod bf5xx_nand.ko

#insmod bf5xx_nand.ko

   other steps that utilize driver (mount, write file, umount)

#rmmod bf5xx_nand.ko

#insmod bf5xx_nand.ko

   KERNEL PANIC

 

It used to panic on the second insmod. This was "fixed" in #4463...now it works twice, but no more than twice! This bug appears to have been tested against bfin_nand module. We are using the bf5xx_nand module.

 

Kernel was built with 2.6.22.19-ADI-2008R1.5, we sync with this branch each night. We are in sync as of 27 Jan 09.

 

Follow-ups

 

--- Robin Getz                                               2009-01-27 18:25:45

John:

 

Thanks for the report - it will be a week or so before anyone can look at this

-- as most of our developers are off for Chinese New Year.

 

-Robin

 

--- Cliff Cai                                                2009-02-04 22:48:53

it seems the workaround from mainline doesn't work in this case,Bryan know

the details.

 

Cliff

 

 

 

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