diff -u joyoriginal/joystick.c joystick-0.7.1/joystick.c
--- joyoriginal/joystick.c	Mon Sep 12 06:31:31 1994
+++ joystick-0.7.1/joystick.c	Mon Jul 24 10:12:23 1995
@@ -32,6 +32,7 @@
 
 #include "joystick.h"
 #include "release.h"
+#include <linux/mm.h>
 
 static struct JS_DATA_SAVE_TYPE JS_DATA[JS_MAX];	/* misc data */
 static int JS_EXIST;		/* which joysticks' axis exist? */
