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SubjectRe: [PATCH v2 14/19] PM / devfreq: tegra: Move governor registration to driver's probe
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On 19. 4. 15. 오후 11:55, Dmitry Osipenko wrote:
> There is no need to register the ACTMON's governor separately from
> the driver, hence let's move the registration into the driver's probe
> function for consistency and to make code cleaner a tad.
>
> Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
> ---
> drivers/devfreq/tegra-devfreq.c | 44 +++++++++------------------------
> 1 file changed, 12 insertions(+), 32 deletions(-)
>
> diff --git a/drivers/devfreq/tegra-devfreq.c b/drivers/devfreq/tegra-devfreq.c
> index 832e4f5aa11b..46c61af8ca33 100644
> --- a/drivers/devfreq/tegra-devfreq.c
> +++ b/drivers/devfreq/tegra-devfreq.c
> @@ -673,6 +673,12 @@ static int tegra_devfreq_probe(struct platform_device *pdev)
>
> platform_set_drvdata(pdev, tegra);
>
> + err = devfreq_add_governor(&tegra_devfreq_governor);
> + if (err) {
> + dev_err(&pdev->dev, "Failed to add governor: %d\n", err);
> + goto remove_opps;
> + }
> +
> tegra_devfreq_profile.initial_freq = clk_get_rate(tegra->emc_clock);
> tegra->devfreq = devfreq_add_device(&pdev->dev,
> &tegra_devfreq_profile,
> @@ -680,7 +686,7 @@ static int tegra_devfreq_probe(struct platform_device *pdev)
> NULL);
> if (IS_ERR(tegra->devfreq)) {
> err = PTR_ERR(tegra->devfreq);
> - goto remove_opps;
> + goto remove_governor;
> }
>
> err = request_threaded_irq(irq, NULL, actmon_thread_isr, IRQF_ONESHOT,
> @@ -706,6 +712,9 @@ static int tegra_devfreq_probe(struct platform_device *pdev)
> remove_devfreq:
> devfreq_remove_device(tegra->devfreq);
>
> +remove_governor:
> + devfreq_remove_governor(&tegra_devfreq_governor);
> +
> remove_opps:
> dev_pm_opp_remove_all_dynamic(&pdev->dev);
>
> @@ -729,7 +738,7 @@ static int tegra_devfreq_remove(struct platform_device *pdev)
> reset_control_reset(tegra->reset);
> clk_disable_unprepare(tegra->clock);
>
> - return 0;
> + return devfreq_remove_governor(&tegra_devfreq_governor);
> }
>
> static const struct of_device_id tegra_devfreq_of_match[] = {
> @@ -747,36 +756,7 @@ static struct platform_driver tegra_devfreq_driver = {
> .of_match_table = tegra_devfreq_of_match,
> },
> };
> -
> -static int __init tegra_devfreq_init(void)
> -{
> - int ret = 0;
> -
> - ret = devfreq_add_governor(&tegra_devfreq_governor);
> - if (ret) {
> - pr_err("%s: failed to add governor: %d\n", __func__, ret);
> - return ret;
> - }
> -
> - ret = platform_driver_register(&tegra_devfreq_driver);
> - if (ret)
> - devfreq_remove_governor(&tegra_devfreq_governor);
> -
> - return ret;
> -}
> -module_init(tegra_devfreq_init)
> -
> -static void __exit tegra_devfreq_exit(void)
> -{
> - int ret = 0;
> -
> - platform_driver_unregister(&tegra_devfreq_driver);
> -
> - ret = devfreq_remove_governor(&tegra_devfreq_governor);
> - if (ret)
> - pr_err("%s: failed to remove governor: %d\n", __func__, ret);
> -}
> -module_exit(tegra_devfreq_exit)
> +module_platform_driver(tegra_devfreq_driver);
>
> MODULE_LICENSE("GPL v2");
> MODULE_DESCRIPTION("Tegra devfreq driver");
>

Looks good to me.
Reviewed-by : Chanwoo Choi <cw00.choi@samsung.com>

--
Best Regards,
Chanwoo Choi
Samsung Electronics

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