PM / Wakeup: Replace pm_check_wakeup_events() with pm_wakeup_pending()
To avoid confusion with the meaning and return value of
pm_check_wakeup_events() replace it with pm_wakeup_pending() that
will work the other way around (ie. return true when system-wide
power transition should be aborted).
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
diff --git a/drivers/base/power/main.c b/drivers/base/power/main.c
index 4747a1e..8a52583 100644
--- a/drivers/base/power/main.c
+++ b/drivers/base/power/main.c
@@ -1056,7 +1056,7 @@
if (pm_runtime_barrier(dev) && device_may_wakeup(dev))
pm_wakeup_event(dev, 0);
- if (!pm_check_wakeup_events()) {
+ if (pm_wakeup_pending()) {
pm_runtime_put_sync(dev);
error = -EBUSY;
} else {
diff --git a/drivers/base/power/wakeup.c b/drivers/base/power/wakeup.c
index 71c5528..8ec406d 100644
--- a/drivers/base/power/wakeup.c
+++ b/drivers/base/power/wakeup.c
@@ -542,26 +542,26 @@
}
/**
- * pm_check_wakeup_events - Check for new wakeup events.
+ * pm_wakeup_pending - Check if power transition in progress should be aborted.
*
* Compare the current number of registered wakeup events with its preserved
- * value from the past to check if new wakeup events have been registered since
- * the old value was stored. Check if the current number of wakeup events being
- * processed is zero.
+ * value from the past and return true if new wakeup events have been registered
+ * since the old value was stored. Also return true if the current number of
+ * wakeup events being processed is different from zero.
*/
-bool pm_check_wakeup_events(void)
+bool pm_wakeup_pending(void)
{
unsigned long flags;
- bool ret = true;
+ bool ret = false;
spin_lock_irqsave(&events_lock, flags);
if (events_check_enabled) {
- ret = ((unsigned int)atomic_read(&event_count) == saved_count)
- && !atomic_read(&events_in_progress);
- events_check_enabled = ret;
+ ret = ((unsigned int)atomic_read(&event_count) != saved_count)
+ || atomic_read(&events_in_progress);
+ events_check_enabled = !ret;
}
spin_unlock_irqrestore(&events_lock, flags);
- if (!ret)
+ if (ret)
pm_wakeup_update_hit_counts();
return ret;
}
diff --git a/include/linux/suspend.h b/include/linux/suspend.h
index 2669751..144b34b 100644
--- a/include/linux/suspend.h
+++ b/include/linux/suspend.h
@@ -292,7 +292,7 @@
/* drivers/base/power/wakeup.c */
extern bool events_check_enabled;
-extern bool pm_check_wakeup_events(void);
+extern bool pm_wakeup_pending(void);
extern bool pm_get_wakeup_count(unsigned int *count);
extern bool pm_save_wakeup_count(unsigned int count);
#else /* !CONFIG_PM_SLEEP */
@@ -309,7 +309,7 @@
#define pm_notifier(fn, pri) do { (void)(fn); } while (0)
-static inline bool pm_check_wakeup_events(void) { return true; }
+static inline bool pm_wakeup_pending(void) { return false; }
#endif /* !CONFIG_PM_SLEEP */
extern struct mutex pm_mutex;
diff --git a/kernel/power/hibernate.c b/kernel/power/hibernate.c
index c9a98be..870f72b 100644
--- a/kernel/power/hibernate.c
+++ b/kernel/power/hibernate.c
@@ -278,7 +278,7 @@
goto Enable_irqs;
}
- if (hibernation_test(TEST_CORE) || !pm_check_wakeup_events())
+ if (hibernation_test(TEST_CORE) || pm_wakeup_pending())
goto Power_up;
in_suspend = 1;
@@ -516,7 +516,7 @@
local_irq_disable();
sysdev_suspend(PMSG_HIBERNATE);
- if (!pm_check_wakeup_events()) {
+ if (pm_wakeup_pending()) {
error = -EAGAIN;
goto Power_up;
}
diff --git a/kernel/power/process.c b/kernel/power/process.c
index eb2c88a..d6d2a10 100644
--- a/kernel/power/process.c
+++ b/kernel/power/process.c
@@ -85,7 +85,7 @@
if (!todo || time_after(jiffies, end_time))
break;
- if (!pm_check_wakeup_events()) {
+ if (pm_wakeup_pending()) {
wakeup = true;
break;
}
diff --git a/kernel/power/suspend.c b/kernel/power/suspend.c
index ecf7705..5e644e3 100644
--- a/kernel/power/suspend.c
+++ b/kernel/power/suspend.c
@@ -163,7 +163,7 @@
error = sysdev_suspend(PMSG_SUSPEND);
if (!error) {
- if (!suspend_test(TEST_CORE) && pm_check_wakeup_events()) {
+ if (!(suspend_test(TEST_CORE) || pm_wakeup_pending())) {
error = suspend_ops->enter(state);
events_check_enabled = false;
}