ACPI hibernation: Call _PTS before suspending devices

[linux-2.6-omap-h63xx.git] / drivers / acpi / sleep / main.c

diff --git a/drivers/acpi/sleep/main.c b/drivers/acpi/sleep/main.c
index 31e8e58e1cec50f03ac9f044cda0c3457d51378b..10db8991bd15f78cad9a1486afc63cd284a9bcd4 100644 (file)
--- a/drivers/acpi/sleep/main.c
+++ b/drivers/acpi/sleep/main.c
@@ -283,22 +283,34 @@ static struct dmi_system_id __initdata acpisleep_dmi_table[] = {
 #ifdef CONFIG_HIBERNATION
 static int acpi_hibernation_begin(void)
 {
+       int error;
+
        acpi_target_sleep_state = ACPI_STATE_S4;
-       return 0;
+       if (new_pts_ordering)
+               return 0;
+
+       error = acpi_sleep_prepare(ACPI_STATE_S4);
+       if (error)
+               acpi_target_sleep_state = ACPI_STATE_S0;
+       else
+               acpi_sleep_finish_wake_up = true;
+
+       return error;
 }
 
 static int acpi_hibernation_prepare(void)
 {
-       int error;
-
-       error = acpi_sleep_prepare(ACPI_STATE_S4);
-       if (error)
-               return error;
+       if (new_pts_ordering) {
+               int error = acpi_sleep_prepare(ACPI_STATE_S4);
 
-       if (!ACPI_SUCCESS(acpi_hw_disable_all_gpes()))
-               error = -EFAULT;
+               if (error) {
+                       acpi_target_sleep_state = ACPI_STATE_S0;
+                       return error;
+               }
+               acpi_sleep_finish_wake_up = true;
+       }
 
-       return error;
+       return ACPI_SUCCESS(acpi_hw_disable_all_gpes()) ? 0 : -EFAULT;
 }
 
 static int acpi_hibernation_enter(void)
@@ -339,15 +351,17 @@ static void acpi_hibernation_finish(void)
        acpi_set_firmware_waking_vector((acpi_physical_address) 0);
 
        acpi_target_sleep_state = ACPI_STATE_S0;
+       acpi_sleep_finish_wake_up = false;
 }
 
 static void acpi_hibernation_end(void)
 {
        /*
         * This is necessary in case acpi_hibernation_finish() is not called
-        * during a failing transition to the sleep state.
+        * directly during a failing transition to the sleep state.
         */
-       acpi_target_sleep_state = ACPI_STATE_S0;
+       if (acpi_sleep_finish_wake_up)
+               acpi_hibernation_finish();
 }
 
 static int acpi_hibernation_pre_restore(void)