The USB case is quite different because your latency is very tightly bounded, your dead device state is rigidly defined, and your loss of device is accurately and immediately signalled. Quite different. Alan -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html