linux-kernel - Re: [PATCH 4/4] Remove obsolete piece of PM documentation

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Message-ID: <16803397.1213285081959.JavaMail.oracle@acsmt301.oracle.com>
Date:	Thu, 12 Jun 2008 10:38:01 -0500 (CDT)
From:	Randy Dunlap <randy.dunlap@...cle.com>
To:	"Rafael J. Wysocki" <rjw@...k.pl>, Pavel Machek <pavel@...e.cz>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	pm list <linux-pm@...ts.linux-foundation.org>,
	Len Brown <lenb@...nel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	ACPI Devel Maling List <linux-acpi@...r.kernel.org>
Subject: Re: [PATCH 4/4] Remove obsolete piece of PM documentation

--- Original Message ---
> On Thu 2008-06-12 10:31:38, Rafael J. Wysocki wrote:
> > From: Rafael J. Wysocki <rjw@...k.pl>
> > 
> > Remove an obsolete piece of PM documentation.
> > 
> > Signed-off-by: Rafael J. Wysocki <rjw@...k.pl>
> > ---
> >  Documentation/power/pm.txt |  257 ---------------------------------------------
> >  1 file changed, 257 deletions(-)
> > 
> > Index: linux-2.6/Documentation/power/pm.txt
> > ===================================================================
> > --- linux-2.6.orig/Documentation/power/pm.txt
> > +++ /dev/null
> > @@ -1,257 +0,0 @@
> > -               Linux Power Management Support
> > -
> > -This document briefly describes how to use power management with your
> > -Linux system and how to add power management support to Linux drivers.
> > -
> > -APM or ACPI?
> > -------------
> > -If you have a relatively recent x86 mobile, desktop, or server system,
> > -odds are it supports either Advanced Power Management (APM) or
> > -Advanced Configuration and Power Interface (ACPI).  ACPI is the newer
> > -of the two technologies and puts power management in the hands of the
> > -operating system, allowing for more intelligent power management than
> > -is possible with BIOS controlled APM.
> > -
> > -The best way to determine which, if either, your system supports is to
> > -build a kernel with both ACPI and APM enabled (as of 2.3.x ACPI is
> > -enabled by default).  If a working ACPI implementation is found, the
> > -ACPI driver will override and disable APM, otherwise the APM driver
> > -will be used.
> > -
> > -No, sorry, you cannot have both ACPI and APM enabled and running at
> > -once.  Some people with broken ACPI or broken APM implementations
> > -would like to use both to get a full set of working features, but you
> > -simply cannot mix and match the two.  Only one power management
> > -interface can be in control of the machine at once.  Think about it..
> 
> I'd keep this; it is still true, and we still support both.
> 
> Maybe it should be moved into Doc*/power/apm.txt or something.

Yes, if there is a good sub-directory for it, please put it there.

> ACK on rest.

~Randy


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