linux-kernel - [PATCH v3 08/28] mfd: stpmic1: Remove #ifdef guards for PM related functions

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Message-Id: <20221023094852.8035-9-paul@crapouillou.net>
Date:   Sun, 23 Oct 2022 10:48:32 +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 08/28] mfd: stpmic1: 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/stpmic1.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/mfd/stpmic1.c b/drivers/mfd/stpmic1.c
index eb3da558c3fb..7d8b0c0548fe 100644
--- a/drivers/mfd/stpmic1.c
+++ b/drivers/mfd/stpmic1.c
@@ -162,7 +162,6 @@ static int stpmic1_probe(struct i2c_client *i2c,
 	return devm_of_platform_populate(dev);
 }
 
-#ifdef CONFIG_PM_SLEEP
 static int stpmic1_suspend(struct device *dev)
 {
 	struct i2c_client *i2c = to_i2c_client(dev);
@@ -187,9 +186,8 @@ static int stpmic1_resume(struct device *dev)
 
 	return 0;
 }
-#endif
 
-static SIMPLE_DEV_PM_OPS(stpmic1_pm, stpmic1_suspend, stpmic1_resume);
+static DEFINE_SIMPLE_DEV_PM_OPS(stpmic1_pm, stpmic1_suspend, stpmic1_resume);
 
 static const struct of_device_id stpmic1_of_match[] = {
 	{ .compatible = "st,stpmic1", },
@@ -201,7 +199,7 @@ static struct i2c_driver stpmic1_driver = {
 	.driver = {
 		.name = "stpmic1",
 		.of_match_table = of_match_ptr(stpmic1_of_match),
-		.pm = &stpmic1_pm,
+		.pm = pm_sleep_ptr(&stpmic1_pm),
 	},
 	.probe = stpmic1_probe,
 };
-- 
2.35.1