Re: [linux-pm] [patch update 2 fix] PM: Introduce core framework for run-time PM of I/O devices

Arjan van de Ven
2009-06-22T06:42:46Z

On Mon, 22 Jun 2009 15:20:43 +0900
Magnus Damm <magnus.damm@gmail.com> wrote:

> On Sat, Jun 20, 2009 at 11:30 PM, Alan
> Stern<stern@rowland.harvard.edu> wrote:
> > Some more thoughts...
> >
> > Magnus, you might have some insights here.  It occurred to me that
> > some devices can switch power levels very quickly, and the drivers
> > might therefore want the runtime suspend and resume methods to be
> > called as soon as possible, even in interrupt context.
>
> I'd like to call pm_request_suspend() from interrupt context. I don't

there are some really strong reasons to at least be able to call the
resume function from an interrupt handler.... shared interrupts are one
of them.

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Arjan van de Ven Intel Open Source Technology Centre
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