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path: root/drivers/base/power/generic_ops.c
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Diffstat (limited to 'drivers/base/power/generic_ops.c')
-rw-r--r--drivers/base/power/generic_ops.c91
1 files changed, 14 insertions, 77 deletions
diff --git a/drivers/base/power/generic_ops.c b/drivers/base/power/generic_ops.c
index 265a0ee3b49..10bdd793f0b 100644
--- a/drivers/base/power/generic_ops.c
+++ b/drivers/base/power/generic_ops.c
@@ -97,16 +97,16 @@ int pm_generic_prepare(struct device *dev)
* @event: PM transition of the system under way.
* @bool: Whether or not this is the "noirq" stage.
*
- * If the device has not been suspended at run time, execute the
- * suspend/freeze/poweroff/thaw callback provided by its driver, if defined, and
- * return its error code. Otherwise, return zero.
+ * Execute the PM callback corresponding to @event provided by the driver of
+ * @dev, if defined, and return its error code. Return 0 if the callback is
+ * not present.
*/
static int __pm_generic_call(struct device *dev, int event, bool noirq)
{
const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
int (*callback)(struct device *);
- if (!pm || pm_runtime_suspended(dev))
+ if (!pm)
return 0;
switch (event) {
@@ -119,9 +119,15 @@ static int __pm_generic_call(struct device *dev, int event, bool noirq)
case PM_EVENT_HIBERNATE:
callback = noirq ? pm->poweroff_noirq : pm->poweroff;
break;
+ case PM_EVENT_RESUME:
+ callback = noirq ? pm->resume_noirq : pm->resume;
+ break;
case PM_EVENT_THAW:
callback = noirq ? pm->thaw_noirq : pm->thaw;
break;
+ case PM_EVENT_RESTORE:
+ callback = noirq ? pm->restore_noirq : pm->restore;
+ break;
default:
callback = NULL;
break;
@@ -211,56 +217,12 @@ int pm_generic_thaw(struct device *dev)
EXPORT_SYMBOL_GPL(pm_generic_thaw);
/**
- * __pm_generic_resume - Generic resume/restore callback for subsystems.
- * @dev: Device to handle.
- * @event: PM transition of the system under way.
- * @bool: Whether or not this is the "noirq" stage.
- *
- * Execute the resume/resotre callback provided by the @dev's driver, if
- * defined. If it returns 0, change the device's runtime PM status to 'active'.
- * Return the callback's error code.
- */
-static int __pm_generic_resume(struct device *dev, int event, bool noirq)
-{
- const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
- int (*callback)(struct device *);
- int ret;
-
- if (!pm)
- return 0;
-
- switch (event) {
- case PM_EVENT_RESUME:
- callback = noirq ? pm->resume_noirq : pm->resume;
- break;
- case PM_EVENT_RESTORE:
- callback = noirq ? pm->restore_noirq : pm->restore;
- break;
- default:
- callback = NULL;
- break;
- }
-
- if (!callback)
- return 0;
-
- ret = callback(dev);
- if (!ret && !noirq && pm_runtime_enabled(dev)) {
- pm_runtime_disable(dev);
- pm_runtime_set_active(dev);
- pm_runtime_enable(dev);
- }
-
- return ret;
-}
-
-/**
* pm_generic_resume_noirq - Generic resume_noirq callback for subsystems.
* @dev: Device to resume.
*/
int pm_generic_resume_noirq(struct device *dev)
{
- return __pm_generic_resume(dev, PM_EVENT_RESUME, true);
+ return __pm_generic_call(dev, PM_EVENT_RESUME, true);
}
EXPORT_SYMBOL_GPL(pm_generic_resume_noirq);
@@ -270,7 +232,7 @@ EXPORT_SYMBOL_GPL(pm_generic_resume_noirq);
*/
int pm_generic_resume(struct device *dev)
{
- return __pm_generic_resume(dev, PM_EVENT_RESUME, false);
+ return __pm_generic_call(dev, PM_EVENT_RESUME, false);
}
EXPORT_SYMBOL_GPL(pm_generic_resume);
@@ -280,7 +242,7 @@ EXPORT_SYMBOL_GPL(pm_generic_resume);
*/
int pm_generic_restore_noirq(struct device *dev)
{
- return __pm_generic_resume(dev, PM_EVENT_RESTORE, true);
+ return __pm_generic_call(dev, PM_EVENT_RESTORE, true);
}
EXPORT_SYMBOL_GPL(pm_generic_restore_noirq);
@@ -290,7 +252,7 @@ EXPORT_SYMBOL_GPL(pm_generic_restore_noirq);
*/
int pm_generic_restore(struct device *dev)
{
- return __pm_generic_resume(dev, PM_EVENT_RESTORE, false);
+ return __pm_generic_call(dev, PM_EVENT_RESTORE, false);
}
EXPORT_SYMBOL_GPL(pm_generic_restore);
@@ -314,28 +276,3 @@ void pm_generic_complete(struct device *dev)
pm_runtime_idle(dev);
}
#endif /* CONFIG_PM_SLEEP */
-
-struct dev_pm_ops generic_subsys_pm_ops = {
-#ifdef CONFIG_PM_SLEEP
- .prepare = pm_generic_prepare,
- .suspend = pm_generic_suspend,
- .suspend_noirq = pm_generic_suspend_noirq,
- .resume = pm_generic_resume,
- .resume_noirq = pm_generic_resume_noirq,
- .freeze = pm_generic_freeze,
- .freeze_noirq = pm_generic_freeze_noirq,
- .thaw = pm_generic_thaw,
- .thaw_noirq = pm_generic_thaw_noirq,
- .poweroff = pm_generic_poweroff,
- .poweroff_noirq = pm_generic_poweroff_noirq,
- .restore = pm_generic_restore,
- .restore_noirq = pm_generic_restore_noirq,
- .complete = pm_generic_complete,
-#endif
-#ifdef CONFIG_PM_RUNTIME
- .runtime_suspend = pm_generic_runtime_suspend,
- .runtime_resume = pm_generic_runtime_resume,
- .runtime_idle = pm_generic_runtime_idle,
-#endif
-};
-EXPORT_SYMBOL_GPL(generic_subsys_pm_ops);