linux-kernel - [PATCH v2 2/2] PM / devfreq: exynos: Switch from CONFIG_PM_SLEEP guards to pm_sleep

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Message-ID: <20240403181517.5993-2-linux.amoon@gmail.com>
Date: Wed,  3 Apr 2024 23:45:05 +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 <krzysztof.kozlowski@...aro.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 v2 2/2] PM / devfreq: exynos: Switch from CONFIG_PM_SLEEP guards to pm_sleep_ptr()

Use the new PM macros for the suspend and resume functions to be
automatically dropped by the compiler when CONFIG_PM_SLEEP are disabled,
without having to use #ifdef guards. If CONFIG_PM_SLEEP unused,
they will simply be discarded by the compiler.

Signed-off-by: Anand Moon <linux.amoon@...il.com>
---
added __maybe_unused to suspend/resume functions

[0] https://lore.kernel.org/all/20240226183308.4730-1-linux.amoon@gmail.com/
---
 drivers/devfreq/exynos-bus.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/drivers/devfreq/exynos-bus.c b/drivers/devfreq/exynos-bus.c
index 153340b6685f..09822f8fa209 100644
--- a/drivers/devfreq/exynos-bus.c
+++ b/drivers/devfreq/exynos-bus.c
@@ -454,8 +454,7 @@ 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)
+static int __maybe_unused exynos_bus_resume(struct device *dev)
 {
 	struct exynos_bus *bus = dev_get_drvdata(dev);
 	int ret;
@@ -469,7 +468,7 @@ static int exynos_bus_resume(struct device *dev)
 	return 0;
 }
 
-static int exynos_bus_suspend(struct device *dev)
+static int __maybe_unused exynos_bus_suspend(struct device *dev)
 {
 	struct exynos_bus *bus = dev_get_drvdata(dev);
 	int ret;
@@ -482,7 +481,6 @@ 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)
@@ -499,7 +497,7 @@ 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