tree a248cb7747c1dcec40b1bf00b7350e732b7c091c
parent 82a32714f07d25259b91163d383ccdb74a166d2d
author Chih-Chung Chang <chihchung@google.com> 1245844771 +0800
committer Chih-Chung Chang <chihchung@google.com> 1245899035 +0800

Only remove client after the hardware is teared down, so a new client
is rejected before old client is done.

Also check mUsers in all cases to make sure there are no existing client.