func (d *SerialDriver) Start() error {
	d.Lock()
	defer d.Unlock()
	return d.Driver.Start()
}
func (d *SerialDriver) Start() error {
	d.Lock()
	defer d.Unlock()
	return d.Driver.Start()
}
func ( d * SerialDriver ) Start ( ) error { d . Lock ( ) defer d . Unlock ( ) return d . Driver . Start ( ) }
// Start a host
Start a host