linux-kernel - [PATCH v3 04/28] mfd: max8925-i2c: Remove #ifdef guards for PM related functions

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Message-Id: <20221023094852.8035-5-paul@crapouillou.net>
Date:   Sun, 23 Oct 2022 10:48:28 +0100
From:   Paul Cercueil <paul@...pouillou.net>
To:     Lee Jones <lee@...nel.org>
Cc:     linux-kernel@...r.kernel.org, Paul Cercueil <paul@...pouillou.net>
Subject: [PATCH v3 04/28] mfd: max8925-i2c: 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.

This has the advantage of always compiling these functions in,
independently of any Kconfig option. Thanks to that, bugs and other
regressions are subsequently easier to catch.

Signed-off-by: Paul Cercueil <paul@...pouillou.net>
---
 drivers/mfd/max8925-i2c.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/mfd/max8925-i2c.c b/drivers/mfd/max8925-i2c.c
index 114e905bef25..649310b5bb3e 100644
--- a/drivers/mfd/max8925-i2c.c
+++ b/drivers/mfd/max8925-i2c.c
@@ -208,7 +208,6 @@ static int max8925_remove(struct i2c_client *client)
 	return 0;
 }
 
-#ifdef CONFIG_PM_SLEEP
 static int max8925_suspend(struct device *dev)
 {
 	struct i2c_client *client = to_i2c_client(dev);
@@ -228,9 +227,9 @@ static int max8925_resume(struct device *dev)
 		disable_irq_wake(chip->core_irq);
 	return 0;
 }
-#endif
 
-static SIMPLE_DEV_PM_OPS(max8925_pm_ops, max8925_suspend, max8925_resume);
+static DEFINE_SIMPLE_DEV_PM_OPS(max8925_pm_ops,
+				max8925_suspend, max8925_resume);
 
 static const struct of_device_id max8925_dt_ids[] = {
 	{ .compatible = "maxim,max8925", },
@@ -240,7 +239,7 @@ static const struct of_device_id max8925_dt_ids[] = {
 static struct i2c_driver max8925_driver = {
 	.driver	= {
 		.name	= "max8925",
-		.pm     = &max8925_pm_ops,
+		.pm     = pm_sleep_ptr(&max8925_pm_ops),
 		.of_match_table = max8925_dt_ids,
 	},
 	.probe		= max8925_probe,
-- 
2.35.1