usb_dev_open      126 dev/usb/usb.c  int usb_dev_open = 0;
usb_dev_open      393 dev/usb/usb.c  		if (usb_dev_open)
usb_dev_open      395 dev/usb/usb.c  		usb_dev_open = 1;
usb_dev_open      452 dev/usb/usb.c  		usb_dev_open = 0;