Global suspend is the UHCI equivalent of what you say EHCI and OHCI do automatically: the controller doesn't run and it doesn't do DMA. That's
I actually meant that the HCDs do that. Once those parts of the schedule are turned off, the HCDs won't DMA them. But OK, now I know what "global" suspend means!
While it might be nice to have usbcore tell hubs to suspend ports that haven't been used for some period of time (a good power savings for bus-powered devices), it doesn't seem especially critical at the moment.
Nope ... :)
- Dave
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