kernel source of Debian Jessie with kernel 3.4.103 + release 13

[zeallin]

Hello Guys,

I am trying to compile kernel module for A20 which runs Debian Jessie  image release 13 (torrent) from official web page.
The module I want to compile: https://github.com/Goshik92/XR21B1411-RS-485-driver

I checked out the source and compiled the kernel followed the instruction provided in Github :
https://github.com/OLIMEX/OLINUXINO/blob/master/SOFTWARE/A20/A20-build-3.4.103-release-8/BUILD_DESCRIPTION_A20_Olimex_kernel_3.4.103%2B_Jessie_rel_8.txt

Then link the kernel source to build kernel module ( replace the softlink "build" from /home/gogo/a20-olimex/linux-sunxi to downloaded source code)

The module can be compiled successfully, but the compiled kernel module can not be installed though insmod.
It failed with "invalid module format"

Where can I find the correct version of kernel header / source to compile kernel module?

Thank you very much!!

[JohnS]

Maybe the posts about this on the net provide the answer?

John

[zeallin]

Hello John,

Do you mean searching with Google?
I've been spent a week finding the solution for this and have no luck.
I suppose expert here who have experience on compiling kernel module can give me some advice.
Thanks!

Best regards,
Zeal

[JohnS]

One thought is that modules are signed and must match the current kernel.

I just compile everything anyway so inevitably all matches.

John