2019년 7월 24일 (수) 오전 8:07, Artur Świgoń <a.swigon@xxxxxxxxxxxxxxxxxxx>님이 작성:
>
> This patch adds a new static function, exynos_bus_profile_init_passive(),
> extracted from exynos_bus_probe().
>
> Signed-off-by: Artur Świgoń <a.swigon@xxxxxxxxxxxxxxxxxxx>
> ---
> drivers/devfreq/exynos-bus.c | 70 +++++++++++++++++++++---------------
> 1 file changed, 42 insertions(+), 28 deletions(-)
>
> diff --git a/drivers/devfreq/exynos-bus.c b/drivers/devfreq/exynos-bus.c
> index d8f1efaf2d49..cf6f6cbd0f55 100644
> --- a/drivers/devfreq/exynos-bus.c
> +++ b/drivers/devfreq/exynos-bus.c
> @@ -430,13 +430,51 @@ static int exynos_bus_profile_init(struct exynos_bus *bus,
> return ret;
> }
>
> +static int exynos_bus_profile_init_passive(struct exynos_bus *bus,
> + struct devfreq_dev_profile *profile)
> +{
> + struct device *dev = bus->dev;
> + struct devfreq *parent_devfreq;
> + struct devfreq_passive_data *passive_data;
> + int ret = 0;
> +
> + /* Initialize the struct profile and governor data for passive device */
> + profile->target = exynos_bus_passive_target;
> + profile->exit = exynos_bus_passive_exit;
> +
> + /* Get the instance of parent devfreq device */
> + parent_devfreq = devfreq_get_devfreq_by_phandle(dev, 0);
> + if (IS_ERR(parent_devfreq)) {
> + ret = -EPROBE_DEFER;
> + goto err;
> + }
> +
> + passive_data = devm_kzalloc(dev, sizeof(*passive_data), GFP_KERNEL);
> + if (!passive_data) {
> + ret = -ENOMEM;
> + goto err;
> + }
> + passive_data->parent = parent_devfreq;
> +
> + /* Add devfreq device for exynos bus with passive governor */
> + bus->devfreq = devm_devfreq_add_device(dev, profile, DEVFREQ_GOV_PASSIVE,
> + passive_data);
> + if (IS_ERR(bus->devfreq)) {
> + dev_err(dev,
> + "failed to add devfreq dev with passive governor\n");
> + ret = PTR_ERR(bus->devfreq);
> + 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_passive_data *passive_data;
> - struct devfreq *parent_devfreq;
> struct exynos_bus *bus;
> int ret, max_state;
> unsigned long min_freq, max_freq;
> @@ -481,33 +519,9 @@ static int exynos_bus_probe(struct platform_device *pdev)
>
> goto out;
> passive:
> - /* Initialize the struct profile and governor data for passive device */
> - profile->target = exynos_bus_passive_target;
> - profile->exit = exynos_bus_passive_exit;
> -
> - /* Get the instance of parent devfreq device */
> - parent_devfreq = devfreq_get_devfreq_by_phandle(dev, 0);
> - if (IS_ERR(parent_devfreq)) {
> - ret = -EPROBE_DEFER;
> + ret = exynos_bus_profile_init_passive(bus, profile);
> + if (ret < 0)
> goto err;
> - }
> -
> - passive_data = devm_kzalloc(dev, sizeof(*passive_data), GFP_KERNEL);
> - if (!passive_data) {
> - ret = -ENOMEM;
> - goto err;
> - }
> - passive_data->parent = parent_devfreq;
> -
> - /* Add devfreq device for exynos bus with passive governor */
> - bus->devfreq = devm_devfreq_add_device(dev, profile, DEVFREQ_GOV_PASSIVE,
> - passive_data);
> - if (IS_ERR(bus->devfreq)) {
> - dev_err(dev,
> - "failed to add devfreq dev with passive governor\n");
> - ret = PTR_ERR(bus->devfreq);
> - goto err;
> - }
>
> out:
> max_state = bus->devfreq->profile->max_state;
> --
> 2.17.1
>
Actually, it is not necessary. It has no any benefit.
Please drop it as I commented on patch1.
--
Best Regards,
Chanwoo Choi
