Messages in this thread | | | Date | Sat, 26 Jul 2003 12:02:33 -0400 (EDT) | From | Alan Stern <> | Subject | Re: [linux-usb-devel] Re: OHCI problems with suspend/resume |
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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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