On Sat, May 29, 2010 at 10:08:04PM +0200, 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@xxxxxxxxxxx>
>
> Will there be a big issue if I push this during the next merge window?
No big issue. it can wait.
--mgross
>
> Rafael
>
>
> > From a0813007ddc7b72cb3da7a533fefba9889aab1d8 Mon Sep 17 00:00:00 2001
> > From: mgross <mgross@mgross-desktop.(none)>
> > Date: Fri, 28 May 2010 21:36:06 -0700
> > Subject: [PATCH] complain when users abuse the pm_qos API by updating a request that
> > isn't registered yet.
> >
> > ---
> > kernel/pm_qos_params.c | 4 ++++
> > 1 files changed, 4 insertions(+), 0 deletions(-)
> >
> > diff --git a/kernel/pm_qos_params.c b/kernel/pm_qos_params.c
> > index f42d3f7..8e55bf1 100644
> > --- a/kernel/pm_qos_params.c
> > +++ b/kernel/pm_qos_params.c
> > @@ -266,6 +266,10 @@ void pm_qos_update_request(struct pm_qos_request_list *pm_qos_req,
> > spin_unlock_irqrestore(&pm_qos_lock, flags);
> > if (pending_update)
> > update_target(pm_qos_req->pm_qos_class);
> > + } else {
> > + WARN(true, "pm_qos: updating an unregistered request "
> > + "does nothing");
> > + dump_stack();
> > }
> > }
> > EXPORT_SYMBOL_GPL(pm_qos_update_request);
> >
>
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