> Yes, I think you are right.
> To test your idea, I moved the initialization
>
> init_MUTEX(&usb_bus_list_lock);
>
> from usb_init() to just before the call to usb_scan_devices()
> in usb_register() and the oops went away and cpia worked.
>
>
> I see that in the working code prior to 2.4.13, usb_init() doesnt handle
> any usb_bus_list_lock initialization. Hmmm.
>
> I believe that cpia_usb.c cannot be compiled into the kernel unless
> usb is also compiled into the kernel. Is there any way to move the
> initialization of cpia_usb to later in the boot sequence?
>
> Or put some #ifndef module ... #endif code that moves the lock
> initialization to before the call to usb_scan devices, and tests whether it
> is done so it is only initialized the first time usb_register is called?
No, don't do complicated halfmeasures.
Add a call to usb_init to main.c::do_basic_setup if you compile usb into the kernel.
Regards
Oliver
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