linux-kernel - [PATCH v2 05/22] i2c: designware: Remove #ifdef guards for PM related functions

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Message-Id: <20230722115046.27323-6-paul@crapouillou.net>
Date:   Sat, 22 Jul 2023 13:50:29 +0200
From:   Paul Cercueil <paul@...pouillou.net>
To:     Wolfram Sang <wsa@...nel.org>
Cc:     linux-i2c@...r.kernel.org, linux-kernel@...r.kernel.org,
        Paul Cercueil <paul@...pouillou.net>,
        Jonathan Cameron <Jonathan.Cameron@...wei.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Jarkko Nikula <jarkko.nikula@...ux.intel.com>,
        Mika Westerberg <mika.westerberg@...ux.intel.com>,
        Jan Dabros <jsd@...ihalf.com>
Subject: [PATCH v2 05/22] i2c: designware: Remove #ifdef guards for PM related functions

Use the new PM macros for the suspend and resume functions to be
automatically dropped by the compiler when CONFIG_PM or
CONFIG_PM_SLEEP are 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>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@...wei.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>

---
Cc: Jarkko Nikula <jarkko.nikula@...ux.intel.com>
Cc: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc: Mika Westerberg <mika.westerberg@...ux.intel.com>
Cc: Jan Dabros <jsd@...ihalf.com>
---
 drivers/i2c/busses/i2c-designware-platdrv.c | 22 ++++++---------------
 1 file changed, 6 insertions(+), 16 deletions(-)

diff --git a/drivers/i2c/busses/i2c-designware-platdrv.c b/drivers/i2c/busses/i2c-designware-platdrv.c
index 970c1c3b0402..855b698e99c0 100644
--- a/drivers/i2c/busses/i2c-designware-platdrv.c
+++ b/drivers/i2c/busses/i2c-designware-platdrv.c
@@ -418,7 +418,6 @@ static void dw_i2c_plat_remove(struct platform_device *pdev)
 	reset_control_assert(dev->rst);
 }
 
-#ifdef CONFIG_PM_SLEEP
 static int dw_i2c_plat_prepare(struct device *dev)
 {
 	/*
@@ -429,11 +428,7 @@ static int dw_i2c_plat_prepare(struct device *dev)
 	 */
 	return !has_acpi_companion(dev);
 }
-#else
-#define dw_i2c_plat_prepare	NULL
-#endif
 
-#ifdef CONFIG_PM
 static int dw_i2c_plat_runtime_suspend(struct device *dev)
 {
 	struct dw_i2c_dev *i_dev = dev_get_drvdata(dev);
@@ -447,7 +442,7 @@ static int dw_i2c_plat_runtime_suspend(struct device *dev)
 	return 0;
 }
 
-static int __maybe_unused dw_i2c_plat_suspend(struct device *dev)
+static int dw_i2c_plat_suspend(struct device *dev)
 {
 	struct dw_i2c_dev *i_dev = dev_get_drvdata(dev);
 
@@ -468,7 +463,7 @@ static int dw_i2c_plat_runtime_resume(struct device *dev)
 	return 0;
 }
 
-static int __maybe_unused dw_i2c_plat_resume(struct device *dev)
+static int dw_i2c_plat_resume(struct device *dev)
 {
 	struct dw_i2c_dev *i_dev = dev_get_drvdata(dev);
 
@@ -479,16 +474,11 @@ static int __maybe_unused dw_i2c_plat_resume(struct device *dev)
 }
 
 static const struct dev_pm_ops dw_i2c_dev_pm_ops = {
-	.prepare = dw_i2c_plat_prepare,
-	SET_LATE_SYSTEM_SLEEP_PM_OPS(dw_i2c_plat_suspend, dw_i2c_plat_resume)
-	SET_RUNTIME_PM_OPS(dw_i2c_plat_runtime_suspend, dw_i2c_plat_runtime_resume, NULL)
+	.prepare = pm_sleep_ptr(dw_i2c_plat_prepare),
+	LATE_SYSTEM_SLEEP_PM_OPS(dw_i2c_plat_suspend, dw_i2c_plat_resume)
+	RUNTIME_PM_OPS(dw_i2c_plat_runtime_suspend, dw_i2c_plat_runtime_resume, NULL)
 };
 
-#define DW_I2C_DEV_PMOPS (&dw_i2c_dev_pm_ops)
-#else
-#define DW_I2C_DEV_PMOPS NULL
-#endif
-
 /* Work with hotplug and coldplug */
 MODULE_ALIAS("platform:i2c_designware");
 
@@ -499,7 +489,7 @@ static struct platform_driver dw_i2c_driver = {
 		.name	= "i2c_designware",
 		.of_match_table = of_match_ptr(dw_i2c_of_match),
 		.acpi_match_table = ACPI_PTR(dw_i2c_acpi_match),
-		.pm	= DW_I2C_DEV_PMOPS,
+		.pm	= pm_ptr(&dw_i2c_dev_pm_ops),
 	},
 };
 
-- 
2.40.1