Simple Scala getter/setter override

Let's say we have a class with a 'name' property:

class SuperFoo(var name: String) 

If I wish to override this, to eg add some locking around the calls:

class SubFoo(n: String) extends SuperFoo(n) {
  val lock = new ReentrantLock
  override def name(): String =
    {
      lock.lock
      try {
        super.name
      } finally {
        lock.unlock
      }
    }
  override def name_=(arg: String): Unit = {
    lock.lock
    try {
      super.name = arg
    } finally {
      lock.unlock
    }
  }
}

The above produces a compilation error:

super may be not be used on variable name 

Any ideas how to correctly implement this? (i.e. override the getter & setter to add locking around them). Thanks!