snoop_urb
snoop_urb(dev, NULL, pipe, wLength, tmo, SUBMIT, NULL, 0);
snoop_urb(dev, NULL, pipe, actlen, i, COMPLETE, tbuf, actlen);
snoop_urb(dev, NULL, pipe, wLength, tmo, SUBMIT, tbuf, wLength);
snoop_urb(dev, NULL, pipe, actlen, i, COMPLETE, NULL, 0);
snoop_urb(dev, NULL, pipe, len1, tmo, SUBMIT, NULL, 0);
snoop_urb(dev, NULL, pipe, len2, i, COMPLETE, tbuf, len2);
snoop_urb(dev, NULL, pipe, len1, tmo, SUBMIT, tbuf, len1);
snoop_urb(dev, NULL, pipe, len2, i, COMPLETE, NULL, 0);
snoop_urb(ps->dev, as->userurb, as->urb->pipe,
snoop_urb(ps->dev, as->userurb, as->urb->pipe,
snoop_urb(urb->dev, as->userurb, urb->pipe, urb->actual_length,