3 files changed, 1 insertions, 13 deletions

diff --git a/drivers/acpi/sleep/main.c b/drivers/acpi/sleep/main.c
index 7249ba2b7a27..aee50b453265 100644
--- a/drivers/acpi/sleep/main.c
+++ b/drivers/acpi/sleep/main.c
@@ -23,7 +23,6 @@ u8 sleep_states[ACPI_S_STATE_COUNT];
 
 static struct pm_ops acpi_pm_ops;
 
-extern void do_suspend_lowlevel_s4bios(void);
 extern void do_suspend_lowlevel(void);
 
 static u32 acpi_suspend_states[] = {
@@ -98,8 +97,6 @@ static int acpi_pm_enter(suspend_state_t pm_state)
         case PM_SUSPEND_DISK:
                 if (acpi_pm_ops.pm_disk_mode == PM_DISK_PLATFORM)
                         status = acpi_enter_sleep_state(acpi_state);
-                else
-                        do_suspend_lowlevel_s4bios();
                 break;
         case PM_SUSPEND_MAX:
                 acpi_power_off();
@@ -206,11 +203,6 @@ static int __init acpi_sleep_init(void)
                         printk(" S%d", i);
                 }
                 if (i == ACPI_STATE_S4) {
-                        if (acpi_gbl_FACS->S4bios_f) {
-                                sleep_states[i] = 1;
-                                printk(" S4bios");
-                                acpi_pm_ops.pm_disk_mode = PM_DISK_FIRMWARE;
-                        }
                         if (sleep_states[i])
                                 acpi_pm_ops.pm_disk_mode = PM_DISK_PLATFORM;
                 }
diff --git a/drivers/acpi/sleep/poweroff.c b/drivers/acpi/sleep/poweroff.c
index a5f947de879b..af7935a95bcc 100644
--- a/drivers/acpi/sleep/poweroff.c
+++ b/drivers/acpi/sleep/poweroff.c
@@ -21,9 +21,7 @@ int acpi_sleep_prepare(u32 acpi_state)
 {
 #ifdef CONFIG_ACPI_SLEEP
         /* do we have a wakeup address for S2 and S3? */
-        /* Here, we support only S4BIOS, those we set the wakeup address */
-        /* S4OS is only supported for now via swsusp.. */
-        if (acpi_state == ACPI_STATE_S3 || acpi_state == ACPI_STATE_S4) {
+        if (acpi_state == ACPI_STATE_S3) {
                 if (!acpi_wakeup_address) {
                         return -EFAULT;
                 }
diff --git a/drivers/acpi/sleep/proc.c b/drivers/acpi/sleep/proc.c
index 09a603f3523e..4696a85a98b9 100644
--- a/drivers/acpi/sleep/proc.c
+++ b/drivers/acpi/sleep/proc.c
@@ -25,8 +25,6 @@ static int acpi_system_sleep_seq_show(struct seq_file *seq, void *offset)
         for (i = 0; i <= ACPI_STATE_S5; i++) {
                 if (sleep_states[i]) {
                         seq_printf(seq, "S%d ", i);
-                        if (i == ACPI_STATE_S4 && acpi_gbl_FACS->S4bios_f)
-                                seq_printf(seq, "S4bios ");
                 }
         }