[PATCH v2] PM: Introduce DEFINE_PM_GENERIC_FUNC macro to reduce code duplication

[Kaushlendra Kumar <kaushlendra.kumar@intel.com>]

Add DEFINE_PM_GENERIC_FUNC macro to completely eliminate repetitive
code patterns in power management generic operations. This macro
generates the entire function definition including signature,
implementation, and symbol export for each pm_generic_* function.

This reduces code duplication significantly while maintaining the
same functionality and improving code maintainability.

Signed-off-by: Kaushlendra Kumar <kaushlendra.kumar@intel.com>
---
Changes in v2:
- Include function signature and symbol export in macro as suggested
---
 drivers/base/power/generic_ops.c | 158 +++++--------------------------
 1 file changed, 26 insertions(+), 132 deletions(-)

diff --git a/drivers/base/power/generic_ops.c b/drivers/base/power/generic_ops.c
index 6502720bb564..0afea5d8f8ef 100644
--- a/drivers/base/power/generic_ops.c
+++ b/drivers/base/power/generic_ops.c
@@ -8,6 +8,14 @@
 #include <linux/pm_runtime.h>
 #include <linux/export.h>
 
+#define DEFINE_PM_GENERIC_FUNC(func_name, op_name) \
+int pm_generic_##func_name(struct device *dev) \
+{ \
+	const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL; \
+	return pm && pm->op_name ? pm->op_name(dev) : 0; \
+} \
+EXPORT_SYMBOL_GPL(pm_generic_##func_name)
+
 #ifdef CONFIG_PM
 /**
  * pm_generic_runtime_suspend - Generic runtime suspend callback for subsystems.
@@ -17,16 +25,7 @@
  * ->runtime_suspend(), execute it and return its error code.  Otherwise,
  * return 0.
  */
-int pm_generic_runtime_suspend(struct device *dev)
-{
-	const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
-	int ret;
-
-	ret = pm && pm->runtime_suspend ? pm->runtime_suspend(dev) : 0;
-
-	return ret;
-}
-EXPORT_SYMBOL_GPL(pm_generic_runtime_suspend);
+DEFINE_PM_GENERIC_FUNC(runtime_suspend, runtime_suspend);
 
 /**
  * pm_generic_runtime_resume - Generic runtime resume callback for subsystems.
@@ -36,16 +35,7 @@ EXPORT_SYMBOL_GPL(pm_generic_runtime_suspend);
  * ->runtime_resume(), execute it and return its error code.  Otherwise,
  * return 0.
  */
-int pm_generic_runtime_resume(struct device *dev)
-{
-	const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
-	int ret;
-
-	ret = pm && pm->runtime_resume ? pm->runtime_resume(dev) : 0;
-
-	return ret;
-}
-EXPORT_SYMBOL_GPL(pm_generic_runtime_resume);
+DEFINE_PM_GENERIC_FUNC(runtime_resume, runtime_resume);
 #endif /* CONFIG_PM */
 
 #ifdef CONFIG_PM_SLEEP
@@ -70,193 +60,97 @@ int pm_generic_prepare(struct device *dev)
  * pm_generic_suspend_noirq - Generic suspend_noirq callback for subsystems.
  * @dev: Device to suspend.
  */
-int pm_generic_suspend_noirq(struct device *dev)
-{
-	const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
-
-	return pm && pm->suspend_noirq ? pm->suspend_noirq(dev) : 0;
-}
-EXPORT_SYMBOL_GPL(pm_generic_suspend_noirq);
+DEFINE_PM_GENERIC_FUNC(suspend_noirq, suspend_noirq);
 
 /**
  * pm_generic_suspend_late - Generic suspend_late callback for subsystems.
  * @dev: Device to suspend.
  */
-int pm_generic_suspend_late(struct device *dev)
-{
-	const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
-
-	return pm && pm->suspend_late ? pm->suspend_late(dev) : 0;
-}
-EXPORT_SYMBOL_GPL(pm_generic_suspend_late);
+DEFINE_PM_GENERIC_FUNC(suspend_late, suspend_late);
 
 /**
  * pm_generic_suspend - Generic suspend callback for subsystems.
  * @dev: Device to suspend.
  */
-int pm_generic_suspend(struct device *dev)
-{
-	const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
-
-	return pm && pm->suspend ? pm->suspend(dev) : 0;
-}
-EXPORT_SYMBOL_GPL(pm_generic_suspend);
+DEFINE_PM_GENERIC_FUNC(suspend, suspend);
 
 /**
  * pm_generic_freeze_noirq - Generic freeze_noirq callback for subsystems.
  * @dev: Device to freeze.
  */
-int pm_generic_freeze_noirq(struct device *dev)
-{
-	const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
-
-	return pm && pm->freeze_noirq ? pm->freeze_noirq(dev) : 0;
-}
-EXPORT_SYMBOL_GPL(pm_generic_freeze_noirq);
+DEFINE_PM_GENERIC_FUNC(freeze_noirq, freeze_noirq);
 
 /**
  * pm_generic_freeze - Generic freeze callback for subsystems.
  * @dev: Device to freeze.
  */
-int pm_generic_freeze(struct device *dev)
-{
-	const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
-
-	return pm && pm->freeze ? pm->freeze(dev) : 0;
-}
-EXPORT_SYMBOL_GPL(pm_generic_freeze);
+DEFINE_PM_GENERIC_FUNC(freeze, freeze);
 
 /**
  * pm_generic_poweroff_noirq - Generic poweroff_noirq callback for subsystems.
  * @dev: Device to handle.
  */
-int pm_generic_poweroff_noirq(struct device *dev)
-{
-	const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
-
-	return pm && pm->poweroff_noirq ? pm->poweroff_noirq(dev) : 0;
-}
-EXPORT_SYMBOL_GPL(pm_generic_poweroff_noirq);
+DEFINE_PM_GENERIC_FUNC(poweroff_noirq, poweroff_noirq);
 
 /**
  * pm_generic_poweroff_late - Generic poweroff_late callback for subsystems.
  * @dev: Device to handle.
  */
-int pm_generic_poweroff_late(struct device *dev)
-{
-	const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
-
-	return pm && pm->poweroff_late ? pm->poweroff_late(dev) : 0;
-}
-EXPORT_SYMBOL_GPL(pm_generic_poweroff_late);
+DEFINE_PM_GENERIC_FUNC(poweroff_late, poweroff_late);
 
 /**
  * pm_generic_poweroff - Generic poweroff callback for subsystems.
  * @dev: Device to handle.
  */
-int pm_generic_poweroff(struct device *dev)
-{
-	const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
-
-	return pm && pm->poweroff ? pm->poweroff(dev) : 0;
-}
-EXPORT_SYMBOL_GPL(pm_generic_poweroff);
+DEFINE_PM_GENERIC_FUNC(poweroff, poweroff);
 
 /**
  * pm_generic_thaw_noirq - Generic thaw_noirq callback for subsystems.
  * @dev: Device to thaw.
  */
-int pm_generic_thaw_noirq(struct device *dev)
-{
-	const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
-
-	return pm && pm->thaw_noirq ? pm->thaw_noirq(dev) : 0;
-}
-EXPORT_SYMBOL_GPL(pm_generic_thaw_noirq);
+DEFINE_PM_GENERIC_FUNC(thaw_noirq, thaw_noirq);
 
 /**
  * pm_generic_thaw - Generic thaw callback for subsystems.
  * @dev: Device to thaw.
  */
-int pm_generic_thaw(struct device *dev)
-{
-	const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
-
-	return pm && pm->thaw ? pm->thaw(dev) : 0;
-}
-EXPORT_SYMBOL_GPL(pm_generic_thaw);
+DEFINE_PM_GENERIC_FUNC(thaw, thaw);
 
 /**
  * pm_generic_resume_noirq - Generic resume_noirq callback for subsystems.
  * @dev: Device to resume.
  */
-int pm_generic_resume_noirq(struct device *dev)
-{
-	const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
-
-	return pm && pm->resume_noirq ? pm->resume_noirq(dev) : 0;
-}
-EXPORT_SYMBOL_GPL(pm_generic_resume_noirq);
+DEFINE_PM_GENERIC_FUNC(resume_noirq, resume_noirq);
 
 /**
  * pm_generic_resume_early - Generic resume_early callback for subsystems.
  * @dev: Device to resume.
  */
-int pm_generic_resume_early(struct device *dev)
-{
-	const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
-
-	return pm && pm->resume_early ? pm->resume_early(dev) : 0;
-}
-EXPORT_SYMBOL_GPL(pm_generic_resume_early);
+DEFINE_PM_GENERIC_FUNC(resume_early, resume_early);
 
 /**
  * pm_generic_resume - Generic resume callback for subsystems.
  * @dev: Device to resume.
  */
-int pm_generic_resume(struct device *dev)
-{
-	const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
-
-	return pm && pm->resume ? pm->resume(dev) : 0;
-}
-EXPORT_SYMBOL_GPL(pm_generic_resume);
+DEFINE_PM_GENERIC_FUNC(resume, resume);
 
 /**
  * pm_generic_restore_noirq - Generic restore_noirq callback for subsystems.
  * @dev: Device to restore.
  */
-int pm_generic_restore_noirq(struct device *dev)
-{
-	const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
-
-	return pm && pm->restore_noirq ? pm->restore_noirq(dev) : 0;
-}
-EXPORT_SYMBOL_GPL(pm_generic_restore_noirq);
+DEFINE_PM_GENERIC_FUNC(restore_noirq, restore_noirq);
 
 /**
  * pm_generic_restore_early - Generic restore_early callback for subsystems.
  * @dev: Device to resume.
  */
-int pm_generic_restore_early(struct device *dev)
-{
-	const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
-
-	return pm && pm->restore_early ? pm->restore_early(dev) : 0;
-}
-EXPORT_SYMBOL_GPL(pm_generic_restore_early);
+DEFINE_PM_GENERIC_FUNC(restore_early, restore_early);
 
 /**
  * pm_generic_restore - Generic restore callback for subsystems.
  * @dev: Device to restore.
  */
-int pm_generic_restore(struct device *dev)
-{
-	const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
-
-	return pm && pm->restore ? pm->restore(dev) : 0;
-}
-EXPORT_SYMBOL_GPL(pm_generic_restore);
+DEFINE_PM_GENERIC_FUNC(restore, restore);
 
 /**
  * pm_generic_complete - Generic routine completing a device power transition.
-- 
2.34.1