On Fri, 25 Jul 2003, David Brownell wrote:
> Benjamin Herrenschmidt wrote, responding to Alan Stern:
> >>I think the hub driver's power management code may be at fault. It needs
> >>to cancel the status interrupt URB when suspending and resubmit it when
> >>waking up; right now it probably does neither one.
> >>
> >>Or maybe I'm wrong about that. Perhaps it's okay to leave the URB active.
> >>If that's the case, then the root hub power management code needs to be
> >>changed to restart the status URB timer after a wakeup.
>
> I thought that patch got merged already ...
>
>
> >>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.
So far as I can see, there's no USB power management code at all apart
from the HC drivers. That includes the hub driver.
And I know that the UHCI suspend routine could use a little work. There's
a 10-Hz polling timer that it doesn't turn off.
Alan Stern
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This archive was generated by hypermail 2b29 : Thu Jul 31 2003 - 22:00:29 EST