#include <linux/module.h>
#include <linux/of.h>
#include <linux/spinlock.h>
+#include <linux/slab.h>
#include <linux/proc_fs.h>
struct device_node *allnodes;
+struct device_node *of_chosen;
/* use when traversing tree through the allnext, child, sibling,
* or parent members of struct device_node.