+extern int device_move(struct device *dev, struct device *new_parent,
+ enum dpm_order dpm_order);
+extern const char *device_get_devnode(struct device *dev,
+ mode_t *mode, const char **tmp);
+extern void *dev_get_drvdata(const struct device *dev);
+extern void dev_set_drvdata(struct device *dev, void *data);