linux-kernel - Re: [linux-pm] Async suspend-resume patch w/ completions (was: Re: Async?suspend-resume patch w/ rwsems)

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Date:	Mon, 21 Dec 2009 12:20:42 +0100
From:	Vojtech Pavlik <vojtech@...e.cz>
To:	Dmitry Torokhov <dmitry.torokhov@...il.com>
Cc:	"Rafael J. Wysocki" <rjw@...k.pl>,
	linux-pm@...ts.linux-foundation.org,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>,
	ACPI Devel Maling List <linux-acpi@...r.kernel.org>
Subject: Re: [linux-pm] Async suspend-resume patch w/ completions (was: Re:
	Async?suspend-resume patch w/ rwsems)

On Sun, Dec 20, 2009 at 11:39:15PM -0800, Dmitry Torokhov wrote:

> > On the nx6325 that appears to reduce the suspend time as much so the effect
> > of async is not visible any more.  On the Wind it decreases the total suspend
> > time almost by half!
> > 
> > Please push this patch to Linus. :-)
> > 
> 
> Let's see if I manage to solicit some testers first. FWIW it seems to be
> working on my boxes.
> 
> But if this works then I am not sure we even want to bother with async
> suspend of i8042 and serios. And serio already does resume
> asynchronously through kseriod.

I'm kind of wondering where this will break, but I don't remember why
the RESET_BAT was put in exactly - the point of making sure the BIOS
doesn't get confused by the advanced modes is correct, and is required
at least when a keyboard is set to "Set 3", but RESET_BAT is a too heavy
hammer anyway - we could just make sure to switch the kbd/mouse to
'default' modes instead of doing a full reset.

-- 
Vojtech Pavlik
Director SuSE Labs
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