Re: [Bug #14483] Interrupts enabled after irqrouter_resume - iMac9,1

Thomas Gleixner
2009-11-17T23:07:09Z

On Tue, 17 Nov 2009, Rafael J. Wysocki wrote:

ACPI folks Cc'ed

> On Tuesday 17 November 2009, Ingo Molnar wrote:
> >
> > * Rafael J. Wysocki <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
> >
> > > This message has been generated automatically as a part of a report
> > > of recent regressions.
> > >
> > > The following bug entry is on the current list of known regressions
> > > from 2.6.31. Please verify if it still should be listed and let me know
> > > (either way).
> > >
> > >
> > > Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=14483
> > > Subject : Interrupts enabled after irqrouter_resume - iMac9,1
> > > Submitter : Justin Mattock <justinmattock-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
> > > Date : 2009-10-25 19:58 (23 days old)
> > > References : http://marc.info/?l=linux-kernel&m=125650070420168&w=4
> >
> > Looks like a suspend bug, not an irq bug. The new warnings in the
> > suspend/resume code might have triggered an old bug in that particular
> > driver.
>
> That's quite possible, although that's rather core code than a driver.
>
> Anyway, I haven't been able to find the bug in there so far.

irqrouter_resume() seems to be solely ACPI code. I have not seen where
it might reenable interrupts, but ACPI folks might shed some light on
that.

Thanks,

tglx