and is entirely responsible for bringing the device back to the
functional state as appropriate.
+ Note that this direct-complete procedure applies even if the device is
+ disabled for runtime PM; only the runtime-PM status matters. It follows
+ that if a device has system-sleep callbacks but does not support runtime
+ PM, then its prepare callback must never return a positive value. This
+ is because all devices are initially set to runtime-suspended with
+ runtime PM disabled.
+
2. The suspend methods should quiesce the device to stop it from performing
I/O. They also may save the device registers and put it into the
appropriate low-power state, depending on the bus type the device is on,
bool pm_runtime_status_suspended(struct device *dev);
- return true if the device's runtime PM status is 'suspended'
- bool pm_runtime_suspended_if_enabled(struct device *dev);
- - return true if the device's runtime PM status is 'suspended' and its
- 'power.disable_depth' field is equal to 1
-
void pm_runtime_allow(struct device *dev);
- set the power.runtime_auto flag for the device and decrease its usage
counter (used by the /sys/devices/.../power/control interface to
if (dev->power.direct_complete) {
if (pm_runtime_status_suspended(dev)) {
pm_runtime_disable(dev);
- if (pm_runtime_suspended_if_enabled(dev))
+ if (pm_runtime_status_suspended(dev))
goto Complete;
pm_runtime_enable(dev);
return dev->power.runtime_status == RPM_SUSPENDED;
}
-static inline bool pm_runtime_suspended_if_enabled(struct device *dev)
-{
- return pm_runtime_status_suspended(dev) && dev->power.disable_depth == 1;
-}
-
static inline bool pm_runtime_enabled(struct device *dev)
{
return !dev->power.disable_depth;
static inline bool pm_runtime_suspended(struct device *dev) { return false; }
static inline bool pm_runtime_active(struct device *dev) { return true; }
static inline bool pm_runtime_status_suspended(struct device *dev) { return false; }
-static inline bool pm_runtime_suspended_if_enabled(struct device *dev) { return false; }
static inline bool pm_runtime_enabled(struct device *dev) { return false; }
static inline void pm_runtime_no_callbacks(struct device *dev) {}