#include <linux/spinlock.h>
#include <linux/timer.h>
#include <linux/freezer.h>
#include <linux/spinlock.h>
#include <linux/timer.h>
#include <linux/freezer.h>
-static DEVICE_ATTR(status, 0600, sysfs_test_status, NULL);
-static DEVICE_ATTR(command, 0600, NULL, sysfs_test_command);
+static DEVICE_ATTR(status, S_IRUSR, sysfs_test_status, NULL);
+static DEVICE_ATTR(command, S_IWUSR, NULL, sysfs_test_command);
static struct bus_type rttest_subsys = {
.name = "rttest",
static struct bus_type rttest_subsys = {
.name = "rttest",