RE: Warning during suspend with MS-7310 mainboard

From: Langsdorf, Mark
Date: Thu Jul 30 2009 - 13:11:36 EST


> On Thu, Jul 30, 2009 at 11:38:22AM -0500, Langsdorf, Mark wrote:
> > I'll look into it.
> >
> > First time I've had this bug reported, though.
> >
>
> It's happening because the suspend code runs with interrupts disabled,
> and the powerpc workaround we do in the cpufreq suspend hook
> calls the drivers ->get method.
>
> powernow-k8's ->get does an smp_call_function_single
> which needs interrupts enabled
>
> If we just make the suspend code conditional on ppc, this
> whole problem goes away.

Oh, thanks for the clarification.

-Mark Langsdorf
Operating System Research Center
AMD

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