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Message-ID: <alpine.LFD.0.999.0709250830420.3579@woody.linux-foundation.org>
Date: Tue, 25 Sep 2007 08:40:06 -0700 (PDT)
From: Linus Torvalds <torvalds@...ux-foundation.org>
To: Andrew Morton <akpm@...ux-foundation.org>
cc: Damien Wyart <damien.wyart@...e.fr>,
LKML <linux-kernel@...r.kernel.org>,
Len Brown <len.brown@...el.com>, Frans Pop <elendil@...net.nl>,
Alexey Starikovskiy <astarikovskiy@...e.de>,
"Rafael J. Wysocki" <rjw@...k.pl>, linux-acpi@...r.kernel.org
Subject: Re: ACPI power off regression in 2.6.23-rc8 (NOT in rc7)
On Tue, 25 Sep 2007 08:51:09 +0200 Damien Wyart <damien.wyart@...e.fr> wrote:
>
> Hello,
>
> After testing rc8, I noticed that I couldn't power off the computer
> directly, it only got halted and I had to press the power button
> manually. Just before displaying "System halted", the following message
> is displayed:
>
> ACPI : PCI interrupt for device 0000:02:08.0 disabled
>
> I had to first revert 5a50fe709d527f31169263e36601dd83446d5744 then
> f216cc3748a3a22c2b99390fddcdafa0583791a2 (handling of Sx states) to
> recover previous behaviour.
Hmm. Those things *do* seem to be suspicious.
For example, those commits seem to move code that used to be inside
CONFIG_PM (which pretty much *everybody* has) to be inside
CONFIG_ACPI_SLEEP (which is a totally different thing, and depends on
whether the user asked for suspend support or not!
Damien - does it work if you ask for SUSPEND or HIBERNATION support?
Len - why are you guys moving stuff into CONFIG_PM_SLEEP? I know you seem
to think that absolutely *everybody* should always support suspend and
hibernation, but the fact is, not everybody does. And it's a totally
separate thing for normal ACPI CPU runstate support that people have used
to manage a *running* CPU (and shutting it down).
Linus
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