linux-kernel - [PATCH] serial: st-asc: Switch from CONFIG_PM_SLEEP guards to pm_sleep

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Message-ID: <20240716180010.126987-1-rgallaispou@gmail.com>
Date: Tue, 16 Jul 2024 20:00:10 +0200
From: Raphael Gallais-Pou <rgallaispou@...il.com>
To: Patrice Chotard <patrice.chotard@...s.st.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Jiri Slaby <jirislaby@...nel.org>
Cc: linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	linux-serial@...r.kernel.org
Subject: [PATCH] serial: st-asc: 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.

Signed-off-by: Raphael Gallais-Pou <rgallaispou@...il.com>
---
 drivers/tty/serial/st-asc.c | 10 +++-------
 1 file changed, 3 insertions(+), 7 deletions(-)

diff --git a/drivers/tty/serial/st-asc.c b/drivers/tty/serial/st-asc.c
index f91753a40a69..8aea59f8ca13 100644
--- a/drivers/tty/serial/st-asc.c
+++ b/drivers/tty/serial/st-asc.c
@@ -808,7 +808,6 @@ static void asc_serial_remove(struct platform_device *pdev)
 	uart_remove_one_port(&asc_uart_driver, port);
 }
 
-#ifdef CONFIG_PM_SLEEP
 static int asc_serial_suspend(struct device *dev)
 {
 	struct uart_port *port = dev_get_drvdata(dev);
@@ -823,8 +822,6 @@ static int asc_serial_resume(struct device *dev)
 	return uart_resume_port(&asc_uart_driver, port);
 }
 
-#endif /* CONFIG_PM_SLEEP */
-
 /*----------------------------------------------------------------------*/
 
 #ifdef CONFIG_SERIAL_ST_ASC_CONSOLE
@@ -932,16 +929,15 @@ static struct uart_driver asc_uart_driver = {
 	.cons		= ASC_SERIAL_CONSOLE,
 };
 
-static const struct dev_pm_ops asc_serial_pm_ops = {
-	SET_SYSTEM_SLEEP_PM_OPS(asc_serial_suspend, asc_serial_resume)
-};
+static DEFINE_SIMPLE_DEV_PM_OPS(asc_serial_pm_ops, asc_serial_suspend,
+						   asc_serial_resume);
 
 static struct platform_driver asc_serial_driver = {
 	.probe		= asc_serial_probe,
 	.remove_new	= asc_serial_remove,
 	.driver	= {
 		.name	= DRIVER_NAME,
-		.pm	= &asc_serial_pm_ops,
+		.pm	= pm_sleep_ptr(&asc_serial_pm_ops),
 		.of_match_table = of_match_ptr(asc_match),
 	},
 };
-- 
2.45.2