Hi,

The first set of steps is correct. Only thing is you need to export one symbol 
in the kernel. Please add below line in the file Kernel/arch/arm/mm/proc-syms.c 
and recompile the kernel.

EXPORT_SYMBOL(v4wb_clear_user_page)

Thanks,
Brijesh Jadav
________________________________
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of xiaowinky
Sent: Thursday, August 28, 2008 9:02 AM
To: [EMAIL PROTECTED]
Subject: MT9T001 camera debugging question

hi,all!
 I want to debug now the MT9T001 camera in the DM355 development board,
I use the module the form to insert in the middle of the essence,
 my step is as follows:
1.insmod  tvp5146.ko
2.insmod  mt9t001.ko
3.insmod  video-buf.ko
4.insmod  davinci-vpfe.ko device_type=0

The first two steps do not have the question

run 3 step , prompts the error message:
video_buf: Unknown symbol v4wb_clear_user_page
insmod: error inserting 'video-buf.ko': -1 Unknown symbol in module

run 4 step ,prompts the error message:
kobject_register failed for vpfe (-17)
driver registration failed
insmod: error inserting 'davinci-vpfe.ko': -1 Operation not permitted

thanks!
winkyxiao
________________________________
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