linux-kernel - Re: [PATCH v2 2/2] PM / devfreq: exynos-bus: Disable devfreq-event device when fails

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Message-ID: <ca7f5eb8-d549-a170-f952-90e5882b233d@samsung.com>
Date:   Mon, 23 Dec 2019 09:47:43 +0900
From:   Chanwoo Choi <cw00.choi@...sung.com>
To:     Yangtao Li <tiny.windzz@...il.com>, myungjoo.ham@...sung.com,
        kyungmin.park@...sung.com, kgene@...nel.org, krzk@...nel.org,
        linux-pm@...r.kernel.org, linux-samsung-soc@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 2/2] PM / devfreq: exynos-bus: Disable devfreq-event
 device when fails

On 12/23/19 2:41 AM, Yangtao Li wrote:
> The exynos_bus_profile_init process may fail, but the devfreq event device
> remains enabled. Call devfreq_event_disable_edev on the error return path.
> 
> Signed-off-by: Yangtao Li <tiny.windzz@...il.com>
> ---
> v2:
> -change subject
> -rename lable to err_edev
> -add return value check
> ---
>  drivers/devfreq/exynos-bus.c | 9 ++++++++-
>  1 file changed, 8 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/devfreq/exynos-bus.c b/drivers/devfreq/exynos-bus.c
> index 7f5917d59072..948e9340f91c 100644
> --- a/drivers/devfreq/exynos-bus.c
> +++ b/drivers/devfreq/exynos-bus.c
> @@ -335,10 +335,17 @@ static int exynos_bus_profile_init(struct exynos_bus *bus,
>  	ret = exynos_bus_set_event(bus);
>  	if (ret < 0) {
>  		dev_err(dev, "failed to set event to devfreq-event devices\n");
> -		return ret;
> +		goto err_edev;
>  	}
>  
>  	return 0;
> +
> +err_edev:
> +	ret = exynos_bus_disable_edev(bus);
> +	if (ret < 0)
> +		dev_warn(dev, "failed to disable the devfreq-event devices\n");
> +
> +	return ret;
>  }
>  
>  static int exynos_bus_profile_init_passive(struct exynos_bus *bus,
> 

Applied it.

-- 
Best Regards,
Chanwoo Choi
Samsung Electronics