linux-kernel - Re: [RFD] Automatic suspend

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Message-ID: <20090220234548.GA9297@srcf.ucam.org>
Date:	Fri, 20 Feb 2009 23:45:48 +0000
From:	Matthew Garrett <mjg59@...f.ucam.org>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
Cc:	Oliver Neukum <oliver@...kum.org>,
	Arve Hjønnevåg <arve@...roid.com>,
	Alan Stern <stern@...land.harvard.edu>,
	"Woodruff, Richard" <r-woodruff2@...com>,
	Arjan van de Ven <arjan@...radead.org>,
	Kyle Moffett <kyle@...fetthome.net>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	pm list <linux-pm@...ts.linux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>, Pavel Machek <pavel@....cz>,
	Nigel Cunningham <nigel@...el.suspend2.net>,
	mark gross <mgross@...ux.intel.com>,
	Uli Luckas <u.luckas@...d.de>,
	Igor Stoppa <igor.stoppa@...ia.com>,
	Brian Swetland <swetland@...gle.com>,
	Len Brown <lenb@...nel.org>
Subject: Re: [RFD] Automatic suspend

On Sat, Feb 21, 2009 at 12:40:48AM +0100, Rafael J. Wysocki wrote:

> We can't do the quirks from the kernel and that's one of the reasons why I
> think user space should start automatic suspend (it can do the quirks if
> necessary).

Any sort of automatic suspend is simply impossible in a world where your 
drivers don't work properly. There's code for making intel and radeon 
handle suspend/resume themselves now, and nvidia before g80 should also 
be easy. More recent nvidia is going to be some work.

But yeah. Let's not have "Work around broken drivers" as a design goal. 
The argument against timeouts in wakelocks works just as well here.

-- 
Matthew Garrett | mjg59@...f.ucam.org
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