On Wed, 17 Mar 2010, Crane Cai wrote: > On Tue, Mar 16, 2010 at 10:51:50AM -0700, Sarah Sharp wrote: > > Why are you only ringing the endpoint doorbell or stopping the endpoint > > if the device is configured? It is possible that a driver or the USB > > core has placed the device in the addressed mode with a SetAddress 0 > > control transfer, and we will want to talk to it when it comes out of > > suspend. The USB 2.0 bus spec (section 7.1.7.6) says "Devices can go > > into the Suspend state from any powered state." > > System software triggered port power management will only be called via the > sysfs interface which only exists when the device is configured. That's not true. The sysfs interface exists even when the device is unconfigured. 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
