1 files changed, 9 insertions, 29 deletions

diff --git a/drivers/acpi/sleep/poweroff.c b/drivers/acpi/sleep/poweroff.c
index 240dde9cf13a..39e40d56b034 100644
--- a/drivers/acpi/sleep/poweroff.c
+++ b/drivers/acpi/sleep/poweroff.c
@@ -39,7 +39,13 @@ int acpi_sleep_prepare(u32 acpi_state)
 
 #ifdef CONFIG_PM
 
-void acpi_power_off(void)
+static void acpi_power_off_prepare(void)
+{
+        /* Prepare to power off the system */
+        acpi_sleep_prepare(ACPI_STATE_S5);
+}
+
+static void acpi_power_off(void)
 {
         /* acpi_sleep_prepare(ACPI_STATE_S5) should have already been called */
         printk("%s called\n", __FUNCTION__);
@@ -48,27 +54,6 @@ void acpi_power_off(void)
         acpi_enter_sleep_state(ACPI_STATE_S5);
 }
 
-static int acpi_shutdown(struct sys_device *x)
-{
-        switch (system_state) {
-        case SYSTEM_POWER_OFF:
-                /* Prepare to power off the system */
-                return acpi_sleep_prepare(ACPI_STATE_S5);
-        default:
-                return 0;
-        }
-}
-
-static struct sysdev_class acpi_sysclass = {
-        set_kset_name("acpi"),
-        .shutdown = acpi_shutdown
-};
-
-static struct sys_device device_acpi = {
-        .id = 0,
-        .cls = &acpi_sysclass,
-};
-
 static int acpi_poweroff_init(void)
 {
         if (!acpi_disabled) {
@@ -78,13 +63,8 @@ static int acpi_poweroff_init(void)
                 status =
                     acpi_get_sleep_type_data(ACPI_STATE_S5, &type_a, &type_b);
                 if (ACPI_SUCCESS(status)) {
-                        int error;
-                        error = sysdev_class_register(&acpi_sysclass);
-                        if (!error)
-                                error = sysdev_register(&device_acpi);
-                        if (!error)
-                                pm_power_off = acpi_power_off;
-                        return error;
+                        pm_power_off_prepare = acpi_power_off_prepare;
+                        pm_power_off = acpi_power_off;
                 }
         }
         return 0;