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

From: Arjan van de Ven
Date: Mon Jun 22 2009 - 02:42:50 EST

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

> On Sat, Jun 20, 2009 at 11:30 PM, Alan
> Stern<stern@xxxxxxxxxxxxxxxxxxx> wrote:
> > Some more thoughts...
> >
> > Magnus, you might have some insights here. ÂIt 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.

Arjan van de Ven Intel Open Source Technology Centre
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