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

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Date:	Sun, 24 Jan 2010 07:56:38 -0800
From:	Jesse Barnes <jbarnes@...tuousgeek.org>
To:	"Rafael J. Wysocki" <rjw@...k.pl>,
	Alan Stern <stern@...land.harvard.edu>
Cc:	pm list <linux-pm@...ts.linux-foundation.org>,
	LKML <linux-kernel@...r.kernel.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)



"Rafael J. Wysocki" <rjw@...k.pl> wrote:

>On Saturday 23 January 2010, Alan Stern wrote:
>> 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>
>
>Thanks!
>
>Rafael
>