Hi!
I'm not sure how the design is intended to work, but either way something needs to be fixed.
Yes, it seems like all the HCDs (and the hub driver) need attention.
Why the hub driver?
For basic functionality, you simply power it down (doing virtual unplug), and power it back up on resume (doing virtual plug of all devices). That should work reasonably for everything but mass-storage.
For non-basic functionality such as "remote wakeup", where you can wake the system up from its suspension by doing things like typing on the USB keyboard.
Plus, the enumeration process should respect hubs' power budgets, and handle overcurrent better. I had a hub re-enumerate over forty times not that long ago, just because it enabled too many things at once and the surge currents made lots of trouble. Plenty of power, if it got turned on carefully enough... :)
Havin enough juice in "common case", but not in "worst case" is not too legal situation, is it?
This was a perfectly legal configuration, with what I recall as four devices. It was pretty far from "worst case".
- Dave
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