linux-kernel - Re: [linux-pm] [patch] complain when users abuse the pm

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Message-Id: <201005302255.24807.rjw@sisk.pl>
Date:	Sun, 30 May 2010 22:55:24 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	markgross@...gnar.org
Cc:	Nigel Cunningham <ncunningham@...a.org.au>,
	linux-pm@...ts.linux-foundation.org, linux-kernel@...r.kernel.org
Subject: Re: [linux-pm] [patch] complain when users abuse the pm_qos API

On Sunday 30 May 2010, mark gross wrote:
> On Sun, May 30, 2010 at 09:50:01PM +0200, Rafael J. Wysocki wrote:
> > On Sunday 30 May 2010, Nigel Cunningham wrote:
> > > Hi.
> > > 
> > > On 30/05/10 06:08, Rafael J. Wysocki wrote:
> > > > On Saturday 29 May 2010, mark gross wrote:
> > > >> The following patch is to help clean up API abusers of pm_qos where
> > > >> they call update_request before registering a request.
> > > >>
> > > >> --mgross
> > > >>
> > > >> --Signed-off-by: markgross<markgross@...gnar.org>
> > > >
> > > > Will there be a big issue if I push this during the next merge window?
> > > 
> > > What's the point to the patch? That is: why is calling update_request 
> > > before registering a request such a big problem that it demands a WARN() 
> > > and dump stack?
> > 
> > It is an API violation if I understand that correctly.
> 
> Yeah, it is, but now that I'm thinking clearly perhaps a better fix
> would be to change the prototype of pm_qos_update_request to return
> something so callers can check for success.
> 
> Lets fix the API rather than use this patch.  Please dopt apply it.

OK

Rafael
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