linux-kernel - [PATCH 18/28] mfd: max77620: Remove #ifdef guards for PM related functions

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Date:   Sun,  7 Aug 2022 16:52:37 +0200
From:   Paul Cercueil <paul@...pouillou.net>
To:     Lee Jones <lee.jones@...aro.org>
Cc:     linux-kernel@...r.kernel.org, Paul Cercueil <paul@...pouillou.net>
Subject: [PATCH 18/28] mfd: max77620: Remove #ifdef guards for PM related functions

Use the new DEFINE_SIMPLE_DEV_PM_OPS() and pm_sleep_ptr() macros
to handle the .suspend/.resume callbacks.

These macros allow the suspend and resume functions to be automatically
dropped by the compiler when CONFIG_SUSPEND is disabled, without having
to use #ifdef guards.

The advantage is then that these functions are now always compiled
independently of any Kconfig option, and thanks to that bugs and
regressions are easier to catch.

Signed-off-by: Paul Cercueil <paul@...pouillou.net>
---
 drivers/mfd/max77620.c | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/drivers/mfd/max77620.c b/drivers/mfd/max77620.c
index fec2096474ad..e8ee4b132fb7 100644
--- a/drivers/mfd/max77620.c
+++ b/drivers/mfd/max77620.c
@@ -574,7 +574,6 @@ static int max77620_probe(struct i2c_client *client,
 	return 0;
 }
 
-#ifdef CONFIG_PM_SLEEP
 static int max77620_set_fps_period(struct max77620_chip *chip,
 				   int fps_id, int time_period)
 {
@@ -681,7 +680,6 @@ static int max77620_i2c_resume(struct device *dev)
 
 	return 0;
 }
-#endif
 
 static const struct i2c_device_id max77620_id[] = {
 	{"max77620", MAX77620},
@@ -690,14 +688,13 @@ static const struct i2c_device_id max77620_id[] = {
 	{},
 };
 
-static const struct dev_pm_ops max77620_pm_ops = {
-	SET_SYSTEM_SLEEP_PM_OPS(max77620_i2c_suspend, max77620_i2c_resume)
-};
+static DEFINE_SIMPLE_DEV_PM_OPS(max77620_pm_ops,
+				max77620_i2c_suspend, max77620_i2c_resume);
 
 static struct i2c_driver max77620_driver = {
 	.driver = {
 		.name = "max77620",
-		.pm = &max77620_pm_ops,
+		.pm = pm_sleep_ptr(&max77620_pm_ops),
 	},
 	.probe = max77620_probe,
 	.id_table = max77620_id,
-- 
2.35.1