--- /dev/null
+#ifndef _DEVICE_H_
+#define _DEVICE_H_
+
+#include <linux/slab.h>
+#include <linux/types.h>
+
+struct module;
+
+struct class {
+};
+
+static inline void class_destroy(struct class *class)
+{
+ kfree(class);
+}
+
+static inline struct class * __must_check class_create(struct module *owner,
+ const char *name)
+{
+ return kzalloc(sizeof(struct class), GFP_KERNEL);
+}
+
+struct device {
+};
+
+static inline void device_unregister(struct device *dev)
+{
+ kfree(dev);
+}
+
+static inline void device_destroy(struct class *cls, dev_t devt) {}
+
+static inline struct device *device_create(struct class *cls, struct device *parent,
+ dev_t devt, void *drvdata,
+ const char *fmt, ...)
+{
+ return kzalloc(sizeof(struct device), GFP_KERNEL);
+}
+
+#endif /* _DEVICE_H_ */