i get this error in response to this and similar bits:
static int wiidriver_release(struct inode *inode,struct file *file)
{
struct input_dev *input_wii = file->private_data;
kfree(input_wii->private);
input_unregister_device(input_wii);
module_put(THIS_MODULE); /*decrement use count*/
return 0;
}

open, read, release, and write all have that kfree line which is whats erroring....(im sure i dont have to tell you this is a kernel module)

i'll admit to know knowing quite what this does (it works so i never felt the need to modify it, it has remained in this form since i got it) anyhow this code worked on my last system, its from a previously released wiimote driver (WMD) which i heavily modified. thats part of the 9% left untouched since i dont understand it much...

well anyhow this worked fine and now it doesnt, the code hasnt changed so does this mean there was a change in input_dev
uname -a:
Linux debian 2.6.26-2-686 #1 SMP Thu Mar 26 01:08:11 UTC 2009 i686 GNU/Linux

The 'private' member has been removed from the input_dev struct.

Use the input_{get|set}_drvdata() methods instead.

Please see this thread in the linux kernel archives for more info:

http://lkml.org/lkml/2008/4/21/195

hth

ah thanks, that helped (though i do get some new warnings...says its an incompatable data type pointer) and the driver no longer works...

One can (as you probably already know) usually fix the incompatible pointer type by casting. I'm not familiar enough with your driver code to be able to help much more than that... there may be other kernel changes or a host of possibilities that could make the driver not function.

im not sure what to cast it to, the dev_get_drvdata() takes a pointer to type input_dev:
as you can see input_wii is type input_dev...im not sure about this file->private_data im afraid kernel modules are still quite unfamiliar to me.

the driver btw, does not currently work...i suspect those warnings are the cause.