Need a Special driver compiled -- kernel module help

Thanks for your question.

1) Cross fingers that you don't need to change anything
2) open a command line, change to the driver directory and run: make
3) if it works without a error message try: make install
4) Reboot and hope it worked.

After entering the driver directory and typing make,

It says:

make: *** No targets. Stop.

From which folder (full path please) must one invoke the "make" command ?

Thank you!

Could you please make the driver package available, so we may have a look at it?

Here's the driver source code zipped up in a little file (contains all the files in the kernel source tree at /drivers/input/keyboard/):

http://ubuntuforums.org/attachment.php?attachmentid=34352&d=1181005089

If you need the whole [Pepper Linux] kernel source tree, it is stored here:

http://updates.pepper.com/pub/pepperpad/sources/pepperpad3/3.1.0/kernel-2.6.12-71.src.rpm

Pepper Linux makes all of its source code available here:

http://updates.pepper.com/pub/pepperpad/sources/pepperpad3/3.1.0/

Thank you!

The problem is not how to build the module, but that you will need to modify the module source code to be compatible with the ubuntu kernel tree. To start with, in ubuntu there is no cim, ergo no cim_rtns.h header.
Are you prepared to make the necessary changes to the source code to make it buildable?

Thanks for clarifying.

I'm gathering more knowledge about this module and about cim, as my personal time allows.

Your insights are very helpful.

Thank you!

This question was expired because it remained in the 'Open' state without activity for the last 15 days.

As a kernel neophyte, I want to cooperate with anyone who can help me get this driver integrated into Ubuntu.

Is it possible to compile this kernel module in isolation, or do I need to compile the entire ubuntu kernel (including this module) at one time ?

It is possible to build a kernel module which linux is able to load at runtime. So generally there's no need to recompile the whole kernel to get a driver to work.

BUT

The driver is based on a quite outdated kernel. In order to compile it, you'll need to check what changed at the kernel source code and make the appropriate changes to the driver source code. So you won't have much success without familiarizing yourself with kernel driver development.
Before that, you should think on filing a feature request on the bug tracker, to get the attention of a kernel developer.

Thanks Markus! After massaging the .C source, I got it to compile and load.

In order to make it compile (and not crash), I had to comment-out the device registration logic -- it doesn't seem to work in Ubuntu's current kernel.

I added some debug code to the source, so it DOES write all keycodes from all keypress events into the kernel log file. But it crashes upon calling input_report_key

Hopefully there is an expert who can help bring this to the next step.

Hi Pythonator, have you tried discussing this on the Ubuntu forums or the IRC channels?

Yes, I had.

This driver was written before kernel 2.6.20 so it calls workqueue API functions the old pre-2.6.20 way.
That is why it won't presently work.

Are there any experts familiar with the workque API in kernel 2.6.20 ?
If they can help me change a few lines of code that would help me retrofit this driver so it works.

Thanks!

Article about the changes made to the Workqueue API in kernel 2.6.20 that have caused breakage in many device drivers:

http://lwn.net/Articles/211279/

This driver has been fixed, released and tested for kernel >=2.6.24

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