linux-kernel - Re: ACPI power off regression in 2.6.23-rc8 (NOT in rc7)

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Message-ID: <64bb37e0709250930m555a9586j35a1d579ea5a3713@mail.gmail.com>
Date:	Tue, 25 Sep 2007 18:30:00 +0200
From:	"Torsten Kaiser" <just.for.lkml@...glemail.com>
To:	"Alexey Starikovskiy" <aystarik@...il.com>
Cc:	"Alexey Starikovskiy" <astarikovskiy@...e.de>,
	"Damien Wyart" <damien.wyart@...e.fr>,
	"Andrew Morton" <akpm@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>,
	"Len Brown" <len.brown@...el.com>, "Frans Pop" <elendil@...net.nl>,
	"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 9/25/07, Alexey Starikovskiy <aystarik@...il.com> wrote:
> Torsten Kaiser wrote:
> > No, I do not have CONFIG_ACPI_SLEEP set,
> > because I do not have CONFIG_PM_SLEEP set,
> > because I do not want SUSPEND and/or HIBERNATION.
> This is not the reason. SUSPEND is controlled with CONFIG_SUSPEND and
> HIBERNATION is controlled with CONFIG_HIBERNATION.
> But if you want S5 ACPI sleep state you might want to enable ACPI_SLEEP...

What I meant with SUSPEND and/or HIBERNATION was CONFIG_SUSPEND /
CONFIG_HIBERNATION.

And the relations where from Kconfig:
from drivers/acpi/Kconfig:
config ACPI_SLEEP
        bool
        depends on PM_SLEEP
        default y

-> no PM_SLEEP means no ACPI_SLEEP

from kernel/power/Kconfig:
config PM_SLEEP
        bool
        depends on SUSPEND || HIBERNATION
        default y

-> No SUSPEND and/or HIBERNATION means no PM_SLEEP

And if I select SUSPEND and/or HIBERNATION I will not only build this
feature into the kernel, but also HOTPLUG_CPU and I want to avoid
that.

It's exactly as Linus said in his mail: Not everybody wants SUSPEND...

I should have formulated that better in my mail, but that was what I
wanted to say.

Back to debugging this:
http://marc.info/?l=linux-acpi&m=119052970904643&w=4
fails to apply against 2.6.23-rc7-mm1, but moving that function by
hand was not to difficult. ;)
(With only the second patch I got a link error...)

http://marc.info/?l=linux-acpi&m=119073173625910&w=4
applied, and a test showed that my system now powers off again.

Torsten
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