Re: [RFC PATCH v2 01/11] devfreq: exynos-bus: Extract exynos_bus_profile_init()

From: Chanwoo Choi <cw00.choi@samsung•com>
To: "Artur Świgoń" <a.swigon@samsung•com>,
	devicetree@vger•kernel.org, linux-arm-kernel@lists•infradead.org,
	linux-samsung-soc@vger•kernel.org, linux-kernel@vger•kernel.org,
	linux-pm@vger•kernel.org, dri-devel@lists•freedesktop.org
Cc: "Artur Świgoń" <a.swigon@partner•samsung.com>,
	b.zolnierkie@samsung•com, sw0312.kim@samsung•com,
	krzk@kernel•org, inki.dae@samsung•com, myungjoo.ham@samsung•com,
	leonard.crestez@nxp•com, georgi.djakov@linaro•org,
	m.szyprowski@samsung•com
Subject: Re: [RFC PATCH v2 01/11] devfreq: exynos-bus: Extract exynos_bus_profile_init()
Date: Fri, 20 Sep 2019 11:15:08 +0900	[thread overview]
Message-ID: <2e49bd2c-e074-038b-f8a2-7dd8dea4a9af@samsung.com> (raw)
In-Reply-To: <20190919142236.4071-2-a.swigon@samsung.com>

Hi,

As I already replied on v1, patch1/2/3 clean-up code
for readability without any behavior changes. 

I think that you better to merge patch1/2/3 to one patch.

On 19. 9. 19. 오후 11:22, Artur Świgoń wrote:
> From: Artur Świgoń <a.swigon@partner•samsung.com>
> 
> This patch adds a new static function, exynos_bus_profile_init(), extracted
> from exynos_bus_probe().
> 
> Signed-off-by: Artur Świgoń <a.swigon@partner•samsung.com>
> ---
>  drivers/devfreq/exynos-bus.c | 92 +++++++++++++++++++++---------------
>  1 file changed, 53 insertions(+), 39 deletions(-)
> 
> diff --git a/drivers/devfreq/exynos-bus.c b/drivers/devfreq/exynos-bus.c
> index 29f422469960..78f38b7fb596 100644
> --- a/drivers/devfreq/exynos-bus.c
> +++ b/drivers/devfreq/exynos-bus.c
> @@ -287,12 +287,62 @@ static int exynos_bus_parse_of(struct device_node *np,
>  	return ret;
>  }
>  
> +static int exynos_bus_profile_init(struct exynos_bus *bus,
> +				   struct devfreq_dev_profile *profile)
> +{
> +	struct device *dev = bus->dev;
> +	struct devfreq_simple_ondemand_data *ondemand_data;
> +	int ret;
> +
> +	/* Initialize the struct profile and governor data for parent device */
> +	profile->polling_ms = 50;
> +	profile->target = exynos_bus_target;
> +	profile->get_dev_status = exynos_bus_get_dev_status;
> +	profile->exit = exynos_bus_exit;
> +
> +	ondemand_data = devm_kzalloc(dev, sizeof(*ondemand_data), GFP_KERNEL);
> +	if (!ondemand_data) {
> +		ret = -ENOMEM;
> +		goto err;
> +	}
> +	ondemand_data->upthreshold = 40;
> +	ondemand_data->downdifferential = 5;
> +
> +	/* Add devfreq device to monitor and handle the exynos bus */
> +	bus->devfreq = devm_devfreq_add_device(dev, profile,
> +						DEVFREQ_GOV_SIMPLE_ONDEMAND,
> +						ondemand_data);
> +	if (IS_ERR(bus->devfreq)) {
> +		dev_err(dev, "failed to add devfreq device\n");
> +		ret = PTR_ERR(bus->devfreq);
> +		goto err;
> +	}
> +
> +	/*
> +	 * Enable devfreq-event to get raw data which is used to determine
> +	 * current bus load.
> +	 */
> +	ret = exynos_bus_enable_edev(bus);
> +	if (ret < 0) {
> +		dev_err(dev, "failed to enable devfreq-event devices\n");
> +		goto err;
> +	}
> +
> +	ret = exynos_bus_set_event(bus);
> +	if (ret < 0) {
> +		dev_err(dev, "failed to set event to devfreq-event devices\n");
> +		goto err;
> +	}
> +
> +err:
> +	return ret;
> +}
> +
>  static int exynos_bus_probe(struct platform_device *pdev)
>  {
>  	struct device *dev = &pdev->dev;
>  	struct device_node *np = dev->of_node, *node;
>  	struct devfreq_dev_profile *profile;
> -	struct devfreq_simple_ondemand_data *ondemand_data;
>  	struct devfreq_passive_data *passive_data;
>  	struct devfreq *parent_devfreq;
>  	struct exynos_bus *bus;
> @@ -334,45 +384,9 @@ static int exynos_bus_probe(struct platform_device *pdev)
>  	if (passive)
>  		goto passive;
>  
> -	/* Initialize the struct profile and governor data for parent device */
> -	profile->polling_ms = 50;
> -	profile->target = exynos_bus_target;
> -	profile->get_dev_status = exynos_bus_get_dev_status;
> -	profile->exit = exynos_bus_exit;
> -
> -	ondemand_data = devm_kzalloc(dev, sizeof(*ondemand_data), GFP_KERNEL);
> -	if (!ondemand_data) {
> -		ret = -ENOMEM;
> +	ret = exynos_bus_profile_init(bus, profile);
> +	if (ret < 0)
>  		goto err;
> -	}
> -	ondemand_data->upthreshold = 40;
> -	ondemand_data->downdifferential = 5;
> -
> -	/* Add devfreq device to monitor and handle the exynos bus */
> -	bus->devfreq = devm_devfreq_add_device(dev, profile,
> -						DEVFREQ_GOV_SIMPLE_ONDEMAND,
> -						ondemand_data);
> -	if (IS_ERR(bus->devfreq)) {
> -		dev_err(dev, "failed to add devfreq device\n");
> -		ret = PTR_ERR(bus->devfreq);
> -		goto err;
> -	}
> -
> -	/*
> -	 * Enable devfreq-event to get raw data which is used to determine
> -	 * current bus load.
> -	 */
> -	ret = exynos_bus_enable_edev(bus);
> -	if (ret < 0) {
> -		dev_err(dev, "failed to enable devfreq-event devices\n");
> -		goto err;
> -	}
> -
> -	ret = exynos_bus_set_event(bus);
> -	if (ret < 0) {
> -		dev_err(dev, "failed to set event to devfreq-event devices\n");
> -		goto err;
> -	}
>  
>  	goto out;
>  passive:
> 

-- 
Best Regards,
Chanwoo Choi
Samsung Electronics

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