Messages in this thread | | | From | David Brownell <> | Subject | Re: Totally broken PCI PM calls | Date | Tue, 12 Oct 2004 15:35:09 -0700 |
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On Tuesday 12 October 2004 3:13 pm, Benjamin Herrenschmidt wrote: > On Wed, 2004-10-13 at 04:52, David Brownell wrote: > > > Drivers that don't reset the controller in resume() > > will need special handling for those BIOS cases. > > That means USB HCDs, and maybe not a lot else > > yet in Linux. > > Usually, at least for OHCI, you can read the controller > status and know if it got reset or is still in suspend state, > at least that how we did so far (and how apple does as well > afaik) and seems to work.
Either of those cases have been handled OK for ages; but the MM tree has OHCI code that also knows about some (I hope all!) of the "new" BIOS states.
> I don't know about EHCI.
It's on my list to find out ... :) One part of it should be as simple OHCI states.
- Dave
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