linux-kernel - [PATCH 3/6] mtd: st_spi_fsm: Switch from CONFIG_PM_SLEEP guards to pm_sleep

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Message-Id: <20241229-update_pm_macro-v1-3-c7d4c4856336@gmail.com>
Date: Sun, 29 Dec 2024 00:32:42 +0100
From: Raphael Gallais-Pou <rgallaispou@...il.com>
To: Patrice Chotard <patrice.chotard@...s.st.com>, 
 Thinh Nguyen <Thinh.Nguyen@...opsys.com>, 
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
 Adrian Hunter <adrian.hunter@...el.com>, 
 Ulf Hansson <ulf.hansson@...aro.org>, 
 Miquel Raynal <miquel.raynal@...tlin.com>, 
 Richard Weinberger <richard@....at>, Vignesh Raghavendra <vigneshr@...com>, 
 Damien Le Moal <dlemoal@...nel.org>, Niklas Cassel <cassel@...nel.org>, 
 Alexandre Torgue <alexandre.torgue@...s.st.com>, 
 Jose Abreu <joabreu@...opsys.com>, Andrew Lunn <andrew+netdev@...n.ch>, 
 "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, 
 Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, 
 Maxime Coquelin <mcoquelin.stm32@...il.com>, 
 Mark Brown <broonie@...nel.org>
Cc: linux-arm-kernel@...ts.infradead.org, linux-usb@...r.kernel.org, 
 linux-kernel@...r.kernel.org, linux-mmc@...r.kernel.org, 
 linux-mtd@...ts.infradead.org, linux-ide@...r.kernel.org, 
 netdev@...r.kernel.org, linux-stm32@...md-mailman.stormreply.com, 
 linux-spi@...r.kernel.org
Subject: [PATCH 3/6] mtd: st_spi_fsm: Switch from CONFIG_PM_SLEEP guards to
 pm_sleep_ptr()

Letting the compiler remove these functions when the kernel is built
without CONFIG_PM_SLEEP support is simpler and less error prone than the
use of #ifdef based kernel configuration guards.

Link: https://lore.kernel.org/all/20240716180010.126987-1-rgallaispou@gmail.com
Signed-off-by: Raphael Gallais-Pou <rgallaispou@...il.com>
---
 drivers/mtd/devices/st_spi_fsm.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/mtd/devices/st_spi_fsm.c b/drivers/mtd/devices/st_spi_fsm.c
index dba584fa2a530b8d32eccc4ebc4d04ce01582ca8..f2266145b82167a4f7a063bcc7815115815483a1 100644
--- a/drivers/mtd/devices/st_spi_fsm.c
+++ b/drivers/mtd/devices/st_spi_fsm.c
@@ -2104,7 +2104,6 @@ static void stfsm_remove(struct platform_device *pdev)
 	WARN_ON(mtd_device_unregister(&fsm->mtd));
 }

-#ifdef CONFIG_PM_SLEEP
 static int stfsmfsm_suspend(struct device *dev)
 {
 	struct stfsm *fsm = dev_get_drvdata(dev);
@@ -2120,9 +2119,8 @@ static int stfsmfsm_resume(struct device *dev)

 	return clk_prepare_enable(fsm->clk);
 }
-#endif

-static SIMPLE_DEV_PM_OPS(stfsm_pm_ops, stfsmfsm_suspend, stfsmfsm_resume);
+static DEFINE_SIMPLE_DEV_PM_OPS(stfsm_pm_ops, stfsmfsm_suspend, stfsmfsm_resume);

 static const struct of_device_id stfsm_match[] = {
 	{ .compatible = "st,spi-fsm", },
@@ -2136,7 +2134,7 @@ static struct platform_driver stfsm_driver = {
 	.driver		= {
 		.name	= "st-spi-fsm",
 		.of_match_table = stfsm_match,
-		.pm     = &stfsm_pm_ops,
+		.pm     = pm_sleep_ptr(&stfsm_pm_ops),
 	},
 };
 module_platform_driver(stfsm_driver);

-- 
2.47.1