USB interrupt URB programming question

Hello!

I want to change the actual "appletouch.c" USB driver and run into a problem.


After I called

        usb_fill_int_urb(dev->urb, udev,
                         usb_rcvintpipe(udev, int_in_endpointAddr),
                         dev->data, dev->datalen, atp_complete, dev, 1);


the driver waits until the USB device (here the touchpad) starts sending data
(after I touched it). It does this continuously until I unload the driver.
If I change the driver to not (re)call the function

         usb_submit_urb(dev->urb, GFP_ATOMIC);

in the "atp_complete" function, it stops. But it does not wait (as the first
time) to restart the transfer. Is it possible to let the USB device restart
the transfer after I touched the pad again?

Any trick to archive this? Do I have to reinit the device?
And help appreciated!

Thanks in advance,
 Regards
  Sven

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