linux-kernel - [PATCH v4 5/5] usb: dwc3: exynos: Use DEFINE_SIMPLE_DEV_PM

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Message-ID: <20240421134752.2652-6-linux.amoon@gmail.com>
Date: Sun, 21 Apr 2024 19:17:34 +0530
From: Anand Moon <linux.amoon@...il.com>
To: Thinh Nguyen <Thinh.Nguyen@...opsys.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Krzysztof Kozlowski <krzk@...nel.org>,
	Alim Akhtar <alim.akhtar@...sung.com>
Cc: Anand Moon <linux.amoon@...il.com>,
	Christophe JAILLET <christophe.jaillet@...adoo.fr>,
	Johan Hovold <johan@...nel.org>,
	linux-usb@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-samsung-soc@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH v4 5/5] usb: dwc3: exynos: Use DEFINE_SIMPLE_DEV_PM_OPS for PM functions

This macro has the advantage over SET_SYSTEM_SLEEP_PM_OPS that we
don't have to care about when the functions are actually used.

Also make use of pm_sleep_ptr() to discard all PM_SLEEP related
stuff if CONFIG_PM_SLEEP isn't enabled.

Acked-by: Thinh Nguyen <Thinh.Nguyen@...opsys.com>
Signed-off-by: Anand Moon <linux.amoon@...il.com>
---
v4 Fix typo in commit message SIMPLE_DEV_PM_OPS to
       SET_SYSTEM_SLEEP_PM_OPS
   Add Acked by Thinh Nguyen

v3: fix using new DEFINE_SIMPLE_DEV_PM_OPS PM macro hence
    change the $subject and the commit message

v2: add __maybe_unused to suspend/resume functions in case CONFIG_PM
   is disabled.
---
 drivers/usb/dwc3/dwc3-exynos.c | 13 +++----------
 1 file changed, 3 insertions(+), 10 deletions(-)

diff --git a/drivers/usb/dwc3/dwc3-exynos.c b/drivers/usb/dwc3/dwc3-exynos.c
index 5d365ca51771..3427522a7c6a 100644
--- a/drivers/usb/dwc3/dwc3-exynos.c
+++ b/drivers/usb/dwc3/dwc3-exynos.c
@@ -187,7 +187,6 @@ static const struct of_device_id exynos_dwc3_match[] = {
 };
 MODULE_DEVICE_TABLE(of, exynos_dwc3_match);
 
-#ifdef CONFIG_PM_SLEEP
 static int dwc3_exynos_suspend(struct device *dev)
 {
 	struct dwc3_exynos *exynos = dev_get_drvdata(dev);
@@ -230,14 +229,8 @@ static int dwc3_exynos_resume(struct device *dev)
 	return 0;
 }
 
-static const struct dev_pm_ops dwc3_exynos_dev_pm_ops = {
-	SET_SYSTEM_SLEEP_PM_OPS(dwc3_exynos_suspend, dwc3_exynos_resume)
-};
-
-#define DEV_PM_OPS	(&dwc3_exynos_dev_pm_ops)
-#else
-#define DEV_PM_OPS	NULL
-#endif /* CONFIG_PM_SLEEP */
+static DEFINE_SIMPLE_DEV_PM_OPS(dwc3_exynos_dev_pm_ops,
+				dwc3_exynos_suspend, dwc3_exynos_resume);
 
 static struct platform_driver dwc3_exynos_driver = {
 	.probe		= dwc3_exynos_probe,
@@ -245,7 +238,7 @@ static struct platform_driver dwc3_exynos_driver = {
 	.driver		= {
 		.name	= "exynos-dwc3",
 		.of_match_table = exynos_dwc3_match,
-		.pm	= DEV_PM_OPS,
+		.pm	= pm_sleep_ptr(&dwc3_exynos_dev_pm_ops),
 	},
 };
 
-- 
2.44.0