* Derived from the read-mod example from relay-examples by Tom Zanussi.
*/
-#define pr_fmt(fmt) "mmiotrace: "
+#define pr_fmt(fmt) "mmiotrace: " fmt
#define DEBUG 1
#include <linux/module.h>
#include <linux/debugfs.h>
+#include <linux/slab.h>
#include <linux/uaccess.h>
#include <linux/io.h>
#include <linux/version.h>