linux-kernel - Re: When will the lunacy end? (Was Re: [PATCH] uswsusp: add pmops->{prepare,enter,finish} support (aka "platform mode"))

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Message-ID: <20060926101230.GD5782@suse.de>
Date:	Tue, 26 Sep 2006 12:12:30 +0200
From:	Stefan Seyfried <seife@...e.de>
To:	Pavel Machek <pavel@....cz>
Cc:	Nigel Cunningham <ncunningham@...uxmail.org>,
	linux-kernel@...r.kernel.org, "Rafael J. Wysocki" <rjw@...k.pl>,
	Andrew Morton <akpm@...l.org>
Subject: Re: When will the lunacy end? (Was Re: [PATCH] uswsusp: add pmops->{prepare,enter,finish} support (aka "platform mode"))

On Tue, Sep 26, 2006 at 12:34:35AM +0200, Pavel Machek wrote:

> PMOPS_PREPARE (& friends) is "tell ACPI to light up that moon
> symbol". Useful suspend can be done without that, but ACPI will be
> confused on resume.

Just to make sure Andrew does not get confused: it also ensures on many
machines, that changed hardware (unplugged AC adapters) gets correctly
detected and that kacpid does not run wild after resume.

I personally would not really care too much about the moon symbol on the
thinkpads, but i care about the ac_adapter state being right :-)

-- 
Stefan Seyfried
QA / R&D Team Mobile Devices        |              "Any ideas, John?"
SUSE LINUX Products GmbH, Nürnberg  | "Well, surrounding them's out." 
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