On 2012年09月21日 09:52, Peter Chen wrote: >> >> Where I would like to see this work go is to have a certain set of >> "safe" internal USB devices be powered off by default when they are >> suspended. I think fingerprint readers and webcams would be a good >> start, but we probably can't do bluetooth, 3G modems, BMCs, etc. We >> would need a new USB driver flag to allow drivers to opt-in to the >> automatic port power off on suspend. We should probably turn that on by >> default and see if anyone has issues. >> > > If I understand correctly, only below ports can be power off compared current's. > > - The internal port which is not connected any devices > - The internal port which is connected non remote-wakeup featured > device, and the port power can be off through user space application > - any other ports? > > For fingerprint, how can we let it re-use? Unless there is another > interrupt to indicate > when we touch it or other things? If the device needed outside event, the remote-wakeup would not be disabled and so the device would not be power off. > > >> Sarah Sharp >> -- >> 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 -- Best regards Tianyu Lan -- 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
