Messages in this thread | | | Date | Mon, 17 May 2010 18:46:44 +0200 | From | Andreas Herrmann <> | Subject | Re: [PATCH] x86: Disable HPET MSI on ATI SB700/SB800 |
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On Mon, May 17, 2010 at 11:12:59AM -0400, Linus Torvalds wrote: > > > 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?
Done that. See http://marc.info/?l=linux-kernel&m=127411462230838
Andreas
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