[v4,2/3] pm: runtime: Make pm_runtime_get_if_conditional() private

Commit Message

Sakari Ailus Jan. 23, 2024, 9:58 a.m. UTC

Stop offering pm_runtime_get_if_conditional() API function for drivers,
instead require them to use pm_runtime_get_if_{active,in_use}. Also
convert the only user, the i915 driver, to use the said functions.

Signed-off-by: Sakari Ailus <[e-mail]>
---
 drivers/base/power/runtime.c            | 34 ++++++++++++++++++++--
 drivers/gpu/drm/i915/intel_runtime_pm.c |  5 +++-
 include/linux/pm_runtime.h              | 38 ++-----------------------
 3 files changed, 38 insertions(+), 39 deletions(-)

Patch

diff --git a/drivers/base/power/runtime.c b/drivers/base/power/runtime.c
index 83e0cd2a19e7..d2c17e29567d 100644
--- a/drivers/base/power/runtime.c
+++ b/drivers/base/power/runtime.c
@@ -1197,7 +1197,7 @@  EXPORT_SYMBOL_GPL(__pm_runtime_resume);
  * The caller is responsible for decrementing the runtime PM usage counter of
  * @dev after this function has returned a positive value for it.
  */
-int pm_runtime_get_conditional(struct device *dev, bool ign_usage_count)
+static int pm_runtime_get_conditional(struct device *dev, bool ign_usage_count)
 {
 	unsigned long flags;
 	int retval;
@@ -1218,7 +1218,37 @@  int pm_runtime_get_conditional(struct device *dev, bool ign_usage_count)
 
 	return retval;
 }
-EXPORT_SYMBOL_GPL(pm_runtime_get_conditional);
+
+/**
+ * pm_runtime_get_if_active - Bump up runtime PM usage counter if the device is
+ *			      in active state
+ * @dev: Target device.
+ *
+ * Increment the runtime PM usage counter of @dev if its runtime PM status is
+ * %RPM_ACTIVE, in which case it returns 1. If the device is in a different
+ * state, 0 is returned. -EINVAL is returned if runtime PM is disabled for the
+ * device.
+ */
+int pm_runtime_get_if_active(struct device *dev)
+{
+	return pm_runtime_get_conditional(dev, true);
+}
+EXPORT_SYMBOL_GPL(pm_runtime_get_if_active);
+
+/**
+ * pm_runtime_get_if_in_use - Conditionally bump up runtime PM usage counter.
+ * @dev: Target device.
+ *
+ * Increment the runtime PM usage counter of @dev if its runtime PM status is
+ * %RPM_ACTIVE and its runtime PM usage counter is greater than 0, in which case
+ * it returns 1. If the device is in a different state or its usage_count is 0,
+ * 0 is returned. -EINVAL is returned if runtime PM is disabled for the device.
+ */
+int pm_runtime_get_if_in_use(struct device *dev)
+{
+	return pm_runtime_get_conditional(dev, false);
+}
+EXPORT_SYMBOL_GPL(pm_runtime_get_if_in_use);
 
 /**
  * __pm_runtime_set_status - Set runtime PM status of a device.
diff --git a/drivers/gpu/drm/i915/intel_runtime_pm.c b/drivers/gpu/drm/i915/intel_runtime_pm.c
index b5f8abd2a22b..d4e844128826 100644
--- a/drivers/gpu/drm/i915/intel_runtime_pm.c
+++ b/drivers/gpu/drm/i915/intel_runtime_pm.c
@@ -246,7 +246,10 @@  static intel_wakeref_t __intel_runtime_pm_get_if_active(struct intel_runtime_pm
 		 * function, since the power state is undefined. This applies
 		 * atm to the late/early system suspend/resume handlers.
 		 */
-		if (pm_runtime_get_conditional(rpm->kdev, ignore_usecount) <= 0)
+		if ((ignore_usecount &&
+		     pm_runtime_get_if_active(rpm->kdev) <= 0) ||
+		    (!ignore_usecount &&
+		     pm_runtime_get_if_in_use(rpm->kdev) <= 0))
 			return 0;
 	}
 
diff --git a/include/linux/pm_runtime.h b/include/linux/pm_runtime.h
index a212b3008ade..436baa167498 100644
--- a/include/linux/pm_runtime.h
+++ b/include/linux/pm_runtime.h
@@ -72,8 +72,8 @@  extern int pm_runtime_force_resume(struct device *dev);
 extern int __pm_runtime_idle(struct device *dev, int rpmflags);
 extern int __pm_runtime_suspend(struct device *dev, int rpmflags);
 extern int __pm_runtime_resume(struct device *dev, int rpmflags);
-extern int pm_runtime_get_conditional(struct device *dev,
-					bool ign_usage_count);
+extern int pm_runtime_get_if_active(struct device *dev);
+extern int pm_runtime_get_if_in_use(struct device *dev);
 extern int pm_schedule_suspend(struct device *dev, unsigned int delay);
 extern int __pm_runtime_set_status(struct device *dev, unsigned int status);
 extern int pm_runtime_barrier(struct device *dev);
@@ -95,35 +95,6 @@  extern void pm_runtime_release_supplier(struct device_link *link);
 
 extern int devm_pm_runtime_enable(struct device *dev);
 
-/**
- * pm_runtime_get_if_active - Bump up runtime PM usage counter if the device is
- *			      in active state
- * @dev: Target device.
- *
- * Increment the runtime PM usage counter of @dev if its runtime PM status is
- * %RPM_ACTIVE, in which case it returns 1. If the device is in a different
- * state, 0 is returned. -EINVAL is returned if runtime PM is disabled for the
- * device.
- */
-static inline int pm_runtime_get_if_active(struct device *dev)
-{
-	return pm_runtime_get_conditional(dev, true);
-}
-
-/**
- * pm_runtime_get_if_in_use - Conditionally bump up runtime PM usage counter.
- * @dev: Target device.
- *
- * Increment the runtime PM usage counter of @dev if its runtime PM status is
- * %RPM_ACTIVE and its runtime PM usage counter is greater than 0, in which case
- * it returns 1. If the device is in a different state or its usage_count is 0,
- * 0 is returned. -EINVAL is returned if runtime PM is disabled for the device.
- */
-static inline int pm_runtime_get_if_in_use(struct device *dev)
-{
-	return pm_runtime_get_conditional(dev, false);
-}
-
 /**
  * pm_suspend_ignore_children - Set runtime PM behavior regarding children.
  * @dev: Target device.
@@ -297,11 +268,6 @@  static inline int pm_runtime_get_if_active(struct device *dev)
 {
 	return -EINVAL;
 }
-static inline int pm_runtime_get_conditional(struct device *dev,
-					     bool ign_usage_count)
-{
-	return -EINVAL;
-}
 static inline int __pm_runtime_set_status(struct device *dev,
 					    unsigned int status) { return 0; }
 static inline int pm_runtime_barrier(struct device *dev) { return 0; }