linux-kernel - Re: [PATCH] PM / OPP: fix incorrect OPP count handling in of_init_opp

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Message-ID: <1589010.LoIeM7LX94@vostro.rjw.lan>
Date:	Tue, 20 May 2014 01:26:57 +0200
From:	"Rafael J. Wysocki" <rjw@...ysocki.net>
To:	Nishanth Menon <nm@...com>
Cc:	Chander Kashyap <chander.kashyap@...aro.org>,
	"linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>,
	lkml <linux-kernel@...r.kernel.org>, pavel@....cz,
	Len Brown <len.brown@...el.com>, gregkh@...uxfoundation.org,
	Viresh Kumar <viresh.kumar@...aro.org>,
	Chander Kashyap <k.chander@...sung.com>,
	Inderpal Singh <inderpal.s@...sung.com>
Subject: Re: [PATCH] PM / OPP: fix incorrect OPP count handling in of_init_opp_table

On Monday, May 19, 2014 08:04:30 AM Nishanth Menon wrote:
> On Fri, May 16, 2014 at 5:51 AM, Chander Kashyap
> <chander.kashyap@...aro.org> wrote:
> > In of_init_opp_table function, if a failure to add an OPP is
> > detected, the count of OPPs, yet to be added is not updated.
> > Fix this by decrementing this count on failure as well.
> >
> > Signed-off-by: Chander Kashyap <k.chander@...sung.com>
> > Signed-off-by: Inderpal Singh <inderpal.s@...sung.com>
> > ---
> >  drivers/base/power/opp.c |    4 +---
> >  1 file changed, 1 insertion(+), 3 deletions(-)
> >
> > diff --git a/drivers/base/power/opp.c b/drivers/base/power/opp.c
> > index d9e376a..faae9cf 100644
> > --- a/drivers/base/power/opp.c
> > +++ b/drivers/base/power/opp.c
> > @@ -643,11 +643,9 @@ int of_init_opp_table(struct device *dev)
> >                 unsigned long freq = be32_to_cpup(val++) * 1000;
> >                 unsigned long volt = be32_to_cpup(val++);
> >
> > -               if (dev_pm_opp_add(dev, freq, volt)) {
> > +               if (dev_pm_opp_add(dev, freq, volt))
> >                         dev_warn(dev, "%s: Failed to add OPP %ld\n",
> >                                  __func__, freq);
> > -                       continue;
> > -               }
> >                 nr -= 2;
> >         }
> Good Catch. Thanks.
> 
> Acked-by: Nishanth Menon <nm@...com>

Since my pull request for 3.15-rc6 has been sent already, I'm going to push
this for -rc7.  Thanks!


-- 
I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.
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