linux-kernel - Re: [PATCH 1/2] PM / Runtime: Add sysfs switch for disabling device run-time PM (rev. 2)

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Message-ID: <Pine.LNX.4.44L0.1001231018510.32358-100000@netrider.rowland.org>
Date:	Sat, 23 Jan 2010 10:20:14 -0500 (EST)
From:	Alan Stern <stern@...land.harvard.edu>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
cc:	pm list <linux-pm@...ts.linux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Jesse Barnes <jbarnes@...tuousgeek.org>,
	Matthew Garrett <mjg59@...f.ucam.org>, Greg KH <greg@...ah.com>
Subject: Re: [PATCH 1/2] PM / Runtime: Add sysfs switch for disabling device
 run-time PM (rev. 2)

On Sat, 23 Jan 2010, Rafael J. Wysocki wrote:

> Hmm, OK.
> 
> Of course, if the driver decides to leave disable_depth > 0, the user still
> won't be able to do anything about that, but if I understand correctly, you
> want drivers to have the option to use pm_runtime_forbid() initially, right
> after pm_runtime_enable(), so that the user space can turn the runtime PM
> on if desired via sysfs.
> 
> That makes sense.  I have a usage case for that myself. :-)
> 
> Updated patch is appended.

It looks good.

Acked-by: Alan Stern <stern@...land.harvard.edu>

Alan Stern

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