if (urb->status) {
usb_serial_debug_data (__FILE__, __FUNCTION__, urb->actual_length, urb->transfer_buffer);
dbg("%s - nonzero read bulk status received: %d", __FUNCTION__, urb->status);
if (urb->status) {
usb_serial_debug_data (__FILE__, __FUNCTION__, urb->actual_length, urb->transfer_buffer);
dbg("%s - nonzero read bulk status received: %d", __FUNCTION__, urb->status);