From: Igor Stoppa <igor.stoppa@nokia.com>
To: ext Mark Brown <broonie@sirena.org.uk>
Cc: "linux-pm@lists.linux-foundation.org"
<linux-pm@lists.linux-foundation.org>
Subject: Re: [RFC Disable suspend on a specific device] This is a little change in linux power scheme
Date: Wed, 08 Apr 2009 19:45:56 +0300 [thread overview]
Message-ID: <1239209157.6228.219.camel@localhost> (raw)
In-Reply-To: <20090408115330.GL20122@sirena.org.uk>
On Wed, 2009-04-08 at 13:53 +0200, ext Mark Brown wrote:
> On Tue, Apr 07, 2009 at 11:40:53PM +0200, Rafael J. Wysocki wrote:
>
> > IMO, there is a danger that suspend will break or even the machine will crash
> > if this is used for a wrong device. I don't think it's generally safe to add
> > switches like this on the core level, because the core doesn't really know
> > which drivers are prepared for it.
>
> OTOH it would be good to have a standard way of exposing this behaviour
> to user space when it can be supported so that applications have some
> degree of abstraction when working with these systems and drivers don't
> have to keep on cooking up their own methods of exposing it.
Don't rely on this method and instead implement automatic power saving
when entering runtime idle.
--
Cheers, Igor
---
Igor Stoppa
Maemo Software - Nokia Devices R&D - Helsinki
next prev parent reply other threads:[~2009-04-08 16:45 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-04-07 10:29 [RFC Disable suspend on a specific device] This is a little change in linux power scheme Michael Trimarchi
2009-04-07 13:45 ` Rafael J. Wysocki
2009-04-07 15:39 ` Michael Trimarchi
2009-04-07 18:55 ` Rafael J. Wysocki
2009-04-07 19:01 ` Michael Trimarchi
2009-04-07 20:40 ` Pavel Machek
2009-04-07 20:57 ` Rafael J. Wysocki
2009-04-07 21:31 ` Alan Stern
2009-04-07 21:38 ` Pavel Machek
2009-04-07 22:25 ` Nigel Cunningham
2009-04-08 5:59 ` Michael Trimarchi
2009-04-08 8:13 ` Rafael J. Wysocki
2009-04-08 8:24 ` Michael Trimarchi
2009-04-08 8:34 ` Rafael J. Wysocki
2009-04-08 8:45 ` Michael Trimarchi
2009-04-07 8:06 ` Pavel Machek
2009-04-20 12:46 ` Mark Brown
2009-04-20 12:55 ` Michael Trimarchi
2009-04-08 11:42 ` Mark Brown
2009-04-08 16:44 ` Igor Stoppa
2009-04-08 18:23 ` Mark Brown
2009-04-08 19:53 ` Igor Stoppa
2009-04-09 14:33 ` Mark Brown
2009-04-07 21:40 ` Rafael J. Wysocki
2009-04-08 11:53 ` Mark Brown
2009-04-08 16:45 ` Igor Stoppa [this message]
2009-04-10 11:17 ` Pavel Machek
2009-04-08 20:37 ` Alan Stern
2009-04-08 21:25 ` Michael Trimarchi
2009-04-08 21:56 ` Rafael J. Wysocki
2009-04-09 18:27 ` Alan Stern
2009-04-09 22:33 ` Rafael J. Wysocki
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