-int nval_del(char *xb, int xb_size, const YCHAR * name);
-int nval_set(char *xb, int xb_size, const YCHAR * name, const char *buf,
+struct yaffs_dev;
+
+int nval_del(struct yaffs_dev *dev, char *xb, int xb_size, const YCHAR * name);
+int nval_set(struct yaffs_dev *dev,
+ char *xb, int xb_size, const YCHAR * name, const char *buf,