Messages in this thread | | | Date | Mon, 17 May 2010 08:12:59 -0700 (PDT) | From | Linus Torvalds <> | Subject | Re: [PATCH] x86: Disable HPET MSI on ATI SB700/SB800 |
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On Mon, 17 May 2010, Andreas Herrmann wrote: > > FYI. I've tried to trigger the publication of errata information for that > chipset. Finally this has happened. > > The discussed problem is indeed due to an erratum. See erratum #27 in > http://support.amd.com/us/Embedded_TechDocs/46837.pdf > > The suggested workaround for this is to disable HPET MSI if LPC > devices are used. I doubt that there is a convenient way for Linux to > find out whether LPC devices are used. Thus I think the only solution > to safely avoid the problem is the currently implemented quirk to > disable HPET MSI on this chipset.
Goodie. It would be good to point this out in the source too. Would you be willing to send in a patch that documents this quirk as a result of that erratum #27, so that we don't lose sight of why we're doing that odd MSI disable?
Linus
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