Hi,
I was looking at the driver and saw potential problems.
As pre_reset() and suspend() are identical there is a problem with
resetting.
/* kill all URBs and delayed work that might still be pending */
usb_kill_urb(ucs->urb_ctrl);
usb_kill_urb(ucs->urb_int_in);
del_timer_sync(&ucs->timer_ctrl);
del_timer_sync(&ucs->timer_atrdy);
del_timer_sync(&ucs->timer_cmd_in);
del_timer_sync(&ucs->timer_int_in);
cancel_work_sync(&ucs->int_in_wq);
You are calling cancel_work_sync(). However int_in_work() may itself
be resetting the device. This seems to be a situation that should be avoided.
Regards
Oliver
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