linux-kernel - Re: [PATCH 4/7] devfreq: exynos: dev_pm_opp_put

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Date:   Fri, 6 Nov 2020 16:42:39 +0900
From:   Chanwoo Choi <cw00.choi@...sung.com>
To:     Viresh Kumar <viresh.kumar@...aro.org>,
        MyungJoo Ham <myungjoo.ham@...sung.com>,
        Kyungmin Park <kyungmin.park@...sung.com>,
        Kukjin Kim <kgene@...nel.org>,
        Krzysztof Kozlowski <krzk@...nel.org>
Cc:     linux-pm@...r.kernel.org,
        Vincent Guittot <vincent.guittot@...aro.org>,
        Rafael Wysocki <rjw@...ysocki.net>,
        Stephen Boyd <sboyd@...nel.org>, Nishanth Menon <nm@...com>,
        digetx@...il.com, linux-samsung-soc@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 4/7] devfreq: exynos: dev_pm_opp_put_*() accepts NULL
 argument

Hi Viresh,

On 11/6/20 4:03 PM, Viresh Kumar wrote:
> The dev_pm_opp_put_*() APIs now accepts a NULL opp_table pointer and so
> there is no need for us to carry the extra check. Drop them.
> 
> Signed-off-by: Viresh Kumar <viresh.kumar@...aro.org>
> ---
>  drivers/devfreq/exynos-bus.c | 12 ++++--------
>  1 file changed, 4 insertions(+), 8 deletions(-)
> 
> diff --git a/drivers/devfreq/exynos-bus.c b/drivers/devfreq/exynos-bus.c
> index 1e684a448c9e..143fd58ec3dc 100644
> --- a/drivers/devfreq/exynos-bus.c
> +++ b/drivers/devfreq/exynos-bus.c
> @@ -158,10 +158,8 @@ static void exynos_bus_exit(struct device *dev)
>  
>  	dev_pm_opp_of_remove_table(dev);
>  	clk_disable_unprepare(bus->clk);
> -	if (bus->opp_table) {
> -		dev_pm_opp_put_regulators(bus->opp_table);
> -		bus->opp_table = NULL;
> -	}
> +	dev_pm_opp_put_regulators(bus->opp_table);
> +	bus->opp_table = NULL;
>  }
>  
>  static void exynos_bus_passive_exit(struct device *dev)
> @@ -444,10 +442,8 @@ static int exynos_bus_probe(struct platform_device *pdev)
>  	dev_pm_opp_of_remove_table(dev);
>  	clk_disable_unprepare(bus->clk);
>  err_reg:
> -	if (!passive) {
> -		dev_pm_opp_put_regulators(bus->opp_table);
> -		bus->opp_table = NULL;
> -	}
> +	dev_pm_opp_put_regulators(bus->opp_table);
> +	bus->opp_table = NULL;
>  
>  	return ret;
>  }
> 

Applied it. Thanks.

-- 
Best Regards,
Chanwoo Choi
Samsung Electronics