problem synching Palm PDA with latest kernels

[Sjoerd Mullender]

Since upgrading to kernel 2.4.22-20.1.2024.2.36.nptl, and then to kernel 
2.4.22-1.2040.nptl I can't load the visor module anymore which is needed 
to communicate with Palm PDAs over USB.  I get the following message:

# insmod visor
Using /lib/modules/2.4.22-1.2040.nptl/kernel/drivers/usb/serial/visor.o
/lib/modules/2.4.22-1.2040.nptl/kernel/drivers/usb/serial/visor.o: 
unresolved symbol usb_serial_register_R7c08a7b5
/lib/modules/2.4.22-1.2040.nptl/kernel/drivers/usb/serial/visor.o: 
unresolved symbol usb_serial_deregister_Re37ba52f

This is pretty annoying since I can't backup my Palm anymore. :-(