linux-kernel - Re: [RESEND][PATCH 1/3] PM / devfreq: exynos4_bus: Fix missing mutex_unlock if opp_find_freq

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Message-ID: <1413655.hhUbBAKNUi@vostro.rjw.lan>
Date:	Fri, 12 Apr 2013 13:51:22 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Axel Lin <axel.lin@...ics.com>,
	MyungJoo Ham <myungjoo.ham@...sung.com>,
	Kyungmin Park <kyungmin.park@...sung.com>,
	Kukjin Kim <kgene.kim@...sung.com>
Cc:	"Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
	linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [RESEND][PATCH 1/3] PM / devfreq: exynos4_bus: Fix missing mutex_unlock if opp_find_freq_floor fails

On Friday, April 12, 2013 01:54:18 PM Axel Lin wrote:
> We need to call mutex_unlock() in the error path.
> 
> Signed-off-by: Axel Lin <axel.lin@...ics.com>

All three patches applied to linux-pm.git/linux-next.

Exynos maintainers, if you have any objections, please holler.

Thanks,
Rafael

> ---
>  drivers/devfreq/exynos4_bus.c |    3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/devfreq/exynos4_bus.c b/drivers/devfreq/exynos4_bus.c
> index 1deee09..54b9615 100644
> --- a/drivers/devfreq/exynos4_bus.c
> +++ b/drivers/devfreq/exynos4_bus.c
> @@ -974,7 +974,8 @@ static int exynos4_busfreq_pm_notifier_event(struct notifier_block *this,
>  			rcu_read_unlock();
>  			dev_err(data->dev, "%s: unable to find a min freq\n",
>  				__func__);
> -			return PTR_ERR(opp);
> +			err = PTR_ERR(opp);
> +			goto unlock;
>  		}
>  		new_oppinfo.rate = opp_get_freq(opp);
>  		new_oppinfo.volt = opp_get_voltage(opp);
> 
-- 
I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.
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