linux-kernel - Re: [Bug #14483] Interrupts enabled after irqrouter_resume

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Message-ID: <alpine.LFD.2.00.0911180003070.24119@localhost.localdomain>
Date:	Wed, 18 Nov 2009 00:07:09 +0100 (CET)
From:	Thomas Gleixner <tglx@...utronix.de>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
cc:	Ingo Molnar <mingo@...e.hu>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Kernel Testers List <kernel-testers@...r.kernel.org>,
	Justin Mattock <justinmattock@...il.com>,
	Martin Schwidefsky <schwidefsky@...ibm.com>,
	Len Brown <lenb@...nel.org>,
	Venkatesch Pallipadi <venkatesh.pallipadi@...el.com>
Subject: Re: [Bug #14483] Interrupts enabled after irqrouter_resume -
 iMac9,1

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@...k.pl> 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@...il.com>
> > > 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
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