[PATCH v2 14/19] PM / devfreq: tegra: Move governor registration to driver's probe

From: Dmitry Osipenko <digetx@gmail.com>
To: Thierry Reding <thierry.reding@gmail.com>,
	Jonathan Hunter <jonathanh@nvidia.com>,
	MyungJoo Ham <myungjoo.ham@samsung.com>,
	Kyungmin Park <kyungmin.park@samsung.com>,
	Chanwoo Choi <cw00.choi@samsung.com>,
	Tomeu Vizoso <tomeu.vizoso@collabora.com>
Cc: linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-pm@vger.kernel.org
Subject: [PATCH v2 14/19] PM / devfreq: tegra: Move governor registration to driver's probe
Date: Mon, 15 Apr 2019 17:55:00 +0300	[thread overview]
Message-ID: <20190415145505.18397-15-digetx@gmail.com> (raw)
In-Reply-To: <20190415145505.18397-1-digetx@gmail.com>

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");
-- 
2.21.0
