On Sat, 30 Jun 2012, Lan Tianyu wrote: > > Have you given any thought to locking? For example, what would happen > > if the port power policy were changed at the same time as a new device > > was plugged into the port? > > > Do you mean while a new device was enumerating, the port powered off? I > guess the enumerating process will fail. That's what I thought too, but I haven't actually tried it. Something strange might happen when two different threads send concurrent messages to the same hub port. You might want to do a few experiments. Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
