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

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Message-ID: <CAGo_u6oQiOJzp2DCCFUfwWWPLKKw=pgZPgdr9LBqfYs-GKb9zg@mail.gmail.com>
Date:	Mon, 19 May 2014 08:04:30 -0500
From:	Nishanth Menon <nm@...com>
To:	Chander Kashyap <chander.kashyap@...aro.org>
Cc:	"linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>,
	lkml <linux-kernel@...r.kernel.org>,
	"rjw@...ysocki.net" <rjw@...ysocki.net>, 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 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>

--
Regards,
Nishanth Menon
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