Re: USB port power off discussion

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>
> 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?


> Sarah Sharp
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