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

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Date:	Mon, 12 Feb 2007 00:28:51 +0000
From:	Alan <alan@...rguk.ukuu.org.uk>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
Cc:	Pavel Machek <pavel@....cz>,
	Arjan van de Ven <arjan@...radead.org>,
	nigel@...el.suspend2.net, LKML <linux-kernel@...r.kernel.org>
Subject: Re: NAK new drivers without proper power management?

> +PM support:	Since Linux is used on many portable and desktop systems, your
> +		driver is likely to be used on such a system and therefore it
> +		should support basic power management by implementing, if
> +		necessary, the .suspend and .resume methods used during the
> +		system-wide suspend and resume transitions.  You should verify
> +		that your driver correctly handles the suspend and resume, but
> +		if you are unable to ensure that, please at least define the
> +		.suspend method returning the -ENOSYS ("Function not
> +		implemented") error.  Note, however, that in such a case your
> +		submission is likely to be suspended and only resumed when the
> +		driver correctly handles this feature.

I'd lose the last bit. Just end it at "error.", there are going to be
people who produce good reasons not to handle suspend/resume.
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