linux driver - insmod does nothing, init_module never called.

I'm working on getting a CANBus driver installed on my box, and am having a lot of difficulty getting it to load correctly. I have finally traced down the problem to the fact that when I call

# insmod can

and get

Using /lib/modules/2.4.26-vrs1-pxa1-arcom3-1-viper/misc/can.o

nothing else happens. lsmod shows that the driver has "installed" but even when I dumb down the init_module and cleanup_module calls to just call printk to give me signs of life I see nothing.

Does anyone have suggestions as to how I could go about tracking down why init_module isn't being called on the load of that module and how I could fix that problem?

Thanks, Miah Wander