linux-kernel - Re: error to be returned while suspended

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Date:	Wed, 4 Oct 2006 18:34:57 +0200
From:	Oliver Neukum <oliver@...kum.org>
To:	Pavel Machek <pavel@....cz>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: error to be returned while suspended

Am Mittwoch, 4. Oktober 2006 13:19 schrieb Pavel Machek:
> On Tue 2006-10-03 13:23:00, Oliver Neukum wrote:
> > Hi,
> > 
> > which error should a character device return if a read/write cannot be
> > serviced because the device is suspended? Shouldn't there be an error
> > code specific to that?
> 
> If you are talking system suspend, then userspace should not run while
> devices are suspended.
> 
> If you are talking runtime suspend, you should probably just wake the
> device up on first access.

Do you really think a device driver should override an explicitely
selected power state?

	Regards
		Oliver
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