#include <linux/kobject.h>
#include <linux/string.h>
#include <linux/sysfs.h>
+#include <linux/slab.h>
#include <linux/module.h>
#include <linux/init.h>
}
/* Our custom sysfs_ops that we will associate with our ktype later on */
-static struct sysfs_ops foo_sysfs_ops = {
+static const struct sysfs_ops foo_sysfs_ops = {
.show = foo_attr_show,
.store = foo_attr_store,
};