On Mon, 8 Oct 2012, Sarah Sharp wrote: > The Set SEL control transfer tells a device the exit latencies > associated with a device-initated U1 or U2 exit. Since a parent hub may > initiate a transition to U1 soon after a downstream port's U1 timeout is > set, we need to make sure the device receives the Set SEL transfer > before the parent hub timeout is set. Just a question, not a comment on the patch. Why is "Set SEL" needed? Doesn't the device already know its own exit latencies? After all, the values come from descriptors that were originally provided by the device. 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
