power_supply: allow power supply devices registered w/o wakeup source
Currently, all the power supply devices are registered with wakeup source,
this results in that every power_supply_changed() invocation brings
the system out of suspend-to-freeze state.
This is overkill as some device drivers, e.g. ACPI battery driver,
have the ability to check the device status and wake up the system
from sleeping only when necessary.
Thus introduce a new API which allows device to be registered
w/o wakeup source.
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
diff --git a/include/linux/power_supply.h b/include/linux/power_supply.h
index c9dc4e0..f2b76ae 100644
--- a/include/linux/power_supply.h
+++ b/include/linux/power_supply.h
@@ -264,6 +264,8 @@
extern int power_supply_register(struct device *parent,
struct power_supply *psy);
+extern int power_supply_register_no_ws(struct device *parent,
+ struct power_supply *psy);
extern void power_supply_unregister(struct power_supply *psy);
extern int power_supply_powers(struct power_supply *psy, struct device *dev);