linux-kernel - Re: NAK new drivers without proper power management?

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Message-ID: <20070212165207.GC17400@elf.ucw.cz>
Date:	Mon, 12 Feb 2007 17:52:07 +0100
From:	Pavel Machek <pavel@....cz>
To:	Nigel Cunningham <nigel@...el.suspend2.net>
Cc:	Manu Abraham <abraham.manu@...il.com>, Willy Tarreau <w@....eu>,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	Arjan van de Ven <arjan@...radead.org>,
	LKML <linux-kernel@...r.kernel.org>, tilman@...p.cc
Subject: Re: NAK new drivers without proper power management?

Hi!

> > > > > Neither am I. I'm just asking that new drivers have power management as
> > > > > standard.
> > >
> > > > What if the hardware doesn't support power management ?
> > >
> > > You would still want to do the cleanup and configuration that you'd do
> > > for module load/unload.
> > >
> > By adding dummy functions, wouldn't that just look awkward ?
> 
> If all you need to do is say 'I don't need to do anything' and we have a
> shared function that does that, all we're talking about doing is adding
> to your struct pci_device (or whatever)
> 
> .resume = generic_empty_resume;
> 
> To me at least, that doesn't look awkward, and says cleanly and clearly
> that you've checked things over and decided you know what's required.

Actually, I'd like it to be

.resume = generic_empty_resume; /* Explain, why your driver needs no
				   resume */

-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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