[PATCH v3 11/16] PM / devfreq: tegra: Move governor registration to driver's probe

[Dmitry Osipenko]

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.

Reviewed-by: Chanwoo Choi <cw00.c...@samsung.com>
Signed-off-by: Dmitry Osipenko <dig...@gmail.com>
---
 drivers/devfreq/tegra-devfreq.c | 43 +++++++++------------------------
 1 file changed, 12 insertions(+), 31 deletions(-)

diff --git a/drivers/devfreq/tegra-devfreq.c b/drivers/devfreq/tegra-devfreq.c
index 272232ce2960..62f35e818122 100644
--- a/drivers/devfreq/tegra-devfreq.c
+++ b/drivers/devfreq/tegra-devfreq.c
@@ -695,6 +695,12 @@ static int tegra_devfreq_probe(struct platform_device 
*pdev)
                goto remove_opps;
        }
 
+       err = devfreq_add_governor(&tegra_devfreq_governor);
+       if (err) {
+               dev_err(&pdev->dev, "Failed to add governor: %d\n", err);
+               goto unreg_notifier;
+       }
+
        tegra_devfreq_profile.initial_freq = clk_get_rate(tegra->emc_clock);
        tegra->devfreq = devfreq_add_device(&pdev->dev,
                                            &tegra_devfreq_profile,
@@ -702,7 +708,7 @@ static int tegra_devfreq_probe(struct platform_device *pdev)
                                            NULL);
        if (IS_ERR(tegra->devfreq)) {
                err = PTR_ERR(tegra->devfreq);
-               goto unreg_notifier;
+               goto remove_governor;
        }
 
        err = devm_request_threaded_irq(&pdev->dev, tegra->irq, NULL,
@@ -718,6 +724,9 @@ static int tegra_devfreq_probe(struct platform_device *pdev)
 remove_devfreq:
        devfreq_remove_device(tegra->devfreq);
 
+remove_governor:
+       devfreq_remove_governor(&tegra_devfreq_governor);
+
 unreg_notifier:
        clk_notifier_unregister(tegra->emc_clock, &tegra->rate_change_nb);
 
@@ -735,6 +744,7 @@ static int tegra_devfreq_remove(struct platform_device 
*pdev)
        struct tegra_devfreq *tegra = platform_get_drvdata(pdev);
 
        devfreq_remove_device(tegra->devfreq);
+       devfreq_remove_governor(&tegra_devfreq_governor);
        dev_pm_opp_remove_all_dynamic(&pdev->dev);
 
        clk_notifier_unregister(tegra->emc_clock, &tegra->rate_change_nb);
@@ -760,36 +770,7 @@ 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");
-- 
2.21.0