linux-kernel - [PATCH v3 2/2] PM / devfreq: exynos: Use DEFINE_SIMPLE_DEV_PM

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Message-ID: <20240417044459.1908-2-linux.amoon@gmail.com>
Date: Wed, 17 Apr 2024 10:14:48 +0530
From: Anand Moon <linux.amoon@...il.com>
To: Chanwoo Choi <cw00.choi@...sung.com>,
	MyungJoo Ham <myungjoo.ham@...sung.com>,
	Kyungmin Park <kyungmin.park@...sung.com>,
	Krzysztof Kozlowski <krzk@...nel.org>,
	Alim Akhtar <alim.akhtar@...sung.com>
Cc: Anand Moon <linux.amoon@...il.com>,
	linux-pm@...r.kernel.org,
	linux-samsung-soc@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH v3 2/2] PM / devfreq: exynos: Use DEFINE_SIMPLE_DEV_PM_OPS for PM functions

This macro has the advantage over SET_SYSTEM_SLEEP_PM_OPS that we don't
have to care about when the functions are actually used.

Also make use of pm_sleep_ptr() to discard all PM_SLEEP related
stuff if CONFIG_PM_SLEEP isn't enabled.

Signed-off-by: Anand Moon <linux.amoon@...il.com>
---
v3: fix using new DEFINE_SIMPLE_DEV_PM_OPS PM macro hence
    change the $subject and the commit message

v2: add __maybe_unused to suspend/resume functions in case CONFIG_PM
   is disabled
---
 drivers/devfreq/exynos-bus.c | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/drivers/devfreq/exynos-bus.c b/drivers/devfreq/exynos-bus.c
index 153340b6685f..b89e04eb8430 100644
--- a/drivers/devfreq/exynos-bus.c
+++ b/drivers/devfreq/exynos-bus.c
@@ -454,7 +454,6 @@ static void exynos_bus_shutdown(struct platform_device *pdev)
 	devfreq_suspend_device(bus->devfreq);
 }
 
-#ifdef CONFIG_PM_SLEEP
 static int exynos_bus_resume(struct device *dev)
 {
 	struct exynos_bus *bus = dev_get_drvdata(dev);
@@ -482,11 +481,9 @@ static int exynos_bus_suspend(struct device *dev)
 
 	return 0;
 }
-#endif
 
-static const struct dev_pm_ops exynos_bus_pm = {
-	SET_SYSTEM_SLEEP_PM_OPS(exynos_bus_suspend, exynos_bus_resume)
-};
+static DEFINE_SIMPLE_DEV_PM_OPS(exynos_bus_pm,
+				exynos_bus_suspend, exynos_bus_resume);
 
 static const struct of_device_id exynos_bus_of_match[] = {
 	{ .compatible = "samsung,exynos-bus", },
@@ -499,7 +496,7 @@ static struct platform_driver exynos_bus_platdrv = {
 	.shutdown	= exynos_bus_shutdown,
 	.driver = {
 		.name	= "exynos-bus",
-		.pm	= &exynos_bus_pm,
+		.pm	= pm_sleep_ptr(&exynos_bus_pm),
 		.of_match_table = exynos_bus_of_match,
 	},
 };
-- 
2.44.0