Alan Stern wrote: > > > Maybe we need an "off" setting that forces the port off? > > > > FWIW this would be very welcome in libusb, to do a hard reset of > > bus-powered devices. > > > > It can be attempted via SET_FEATURE(PORT_POWER) to the hub, but a > > "real" API would be nice. > > But remember that such an API would be very unreliable. Many hubs and > root hubs cannot shut off port power at all, and some of the remaining > ones use ganged power switches (you have to turn off all the ports in a > gang before power is removed from any of them). Yes, I know. It would be extra special nice if the kernel exposes these various capabilities, in case they are already known. //Peter -- 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
