--- testmod_drv.c.orig 2014-06-02 16:49:49.428509600 -0500 +++ testmod_drv.c 2014-06-02 16:49:56.973656791 -0500 @@ -11,7 +11,7 @@ static ssize_t value_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf) { - return sprintf(buf, "%d\n", value); + return sprintf(buf, "%d\n", value+1); } static struct kobj_attribute testmod_value_attr = __ATTR_RO(value);