On Thu, 17 Jul 2014, David Laight wrote: > From: Pratyush Anand > ... > > Only side effect of long timeout: If a device was connected before > > suspend, and was removed while system was asleep, then the penalty > > would be the timeout ie 2000 ms. I do not see a way to handle this. I > > can put a FIXME note for this in patch. > ... > > Can't you use the static detection that a device is connected at all? > (ie look at whether the USB1/2 D+/D- lines have been pulled up/down). While a device is trying to negotiate a SuperSpeed connection, it won't turn on the D+ pullup. That would mean it was trying to connect at both SS and HS/FS at the same time, which only hubs are allowed to do. 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
