+ down(&dev->sem);
+ if (dev->power.power_state.event) {
+ dev_dbg(dev, "PM: suspend %d-->%d\n",
+ dev->power.power_state.event, state.event);
+ }
+ if (dev->power.pm_parent
+ && dev->power.pm_parent->power.power_state.event) {
+ dev_err(dev,
+ "PM: suspend %d->%d, parent %s already %d\n",
+ dev->power.power_state.event, state.event,
+ dev->power.pm_parent->bus_id,
+ dev->power.pm_parent->power.power_state.event);
+ }