ACPI / Sleep: Consolidate suspend and hibernation routines

Some hibernation and suspend routines can be merged, which reduces
the complexity of code a bit.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Len Brown <len.brown@intel.com>

1 files changed, 16 insertions, 26 deletions

diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c
index 93441c95c53b..61c5bd03f733 100644
--- a/drivers/acpi/sleep.c
+++ b/drivers/acpi/sleep.c
@@ -105,6 +105,16 @@ static int acpi_pm_freeze(void)
 }
 
 /**
+ * acpi_pre_suspend - Enable wakeup devices, "freeze" EC and save NVS.
+ */
+static int acpi_pm_pre_suspend(void)
+{
+        acpi_pm_freeze();
+        suspend_nvs_save();
+        return 0;
+}
+
+/**
  *      __acpi_pm_prepare - Prepare the platform to enter the target state.
  *
  *      If necessary, set the firmware waking vector and do arch-specific
@@ -113,11 +123,9 @@ static int acpi_pm_freeze(void)
 static int __acpi_pm_prepare(void)
 {
         int error = acpi_sleep_prepare(acpi_target_sleep_state);
-
-        suspend_nvs_save();
-
         if (error)
                 acpi_target_sleep_state = ACPI_STATE_S0;
+
         return error;
 }
 
@@ -128,9 +136,8 @@ static int __acpi_pm_prepare(void)
 static int acpi_pm_prepare(void)
 {
         int error = __acpi_pm_prepare();
-
         if (!error)
-                acpi_pm_freeze();
+                acpi_pm_pre_suspend();
 
         return error;
 }
@@ -322,9 +329,9 @@ static struct platform_suspend_ops acpi_suspend_ops = {
 static int acpi_suspend_begin_old(suspend_state_t pm_state)
 {
         int error = acpi_suspend_begin(pm_state);
-
         if (!error)
                 error = __acpi_pm_prepare();
+
         return error;
 }
 
@@ -335,7 +342,7 @@ static int acpi_suspend_begin_old(suspend_state_t pm_state)
 static struct platform_suspend_ops acpi_suspend_ops_old = {
         .valid = acpi_suspend_state_valid,
         .begin = acpi_suspend_begin_old,
-        .prepare_late = acpi_pm_freeze,
+        .prepare_late = acpi_pm_pre_suspend,
         .enter = acpi_suspend_enter,
         .wake = acpi_suspend_finish,
         .end = acpi_pm_end,
@@ -423,16 +430,6 @@ static int acpi_hibernation_begin(void)
         return error;
 }
 
-static int acpi_hibernation_pre_snapshot(void)
-{
-        int error = acpi_pm_prepare();
-
-        if (!error)
-                suspend_nvs_save();
-
-        return error;
-}
-
 static int acpi_hibernation_enter(void)
 {
         acpi_status status = AE_OK;
@@ -480,7 +477,7 @@ static void acpi_pm_thaw(void)
 static struct platform_hibernation_ops acpi_hibernation_ops = {
         .begin = acpi_hibernation_begin,
         .end = acpi_pm_end,
-        .pre_snapshot = acpi_hibernation_pre_snapshot,
+        .pre_snapshot = acpi_pm_prepare,
         .finish = acpi_pm_finish,
         .prepare = acpi_pm_prepare,
         .enter = acpi_hibernation_enter,
@@ -516,13 +513,6 @@ static int acpi_hibernation_begin_old(void)
         return error;
 }
 
-static int acpi_hibernation_pre_snapshot_old(void)
-{
-        acpi_pm_freeze();
-        suspend_nvs_save();
-        return 0;
-}
-
 /*
  * The following callbacks are used if the pre-ACPI 2.0 suspend ordering has
  * been requested.
@@ -530,7 +520,7 @@ static int acpi_hibernation_pre_snapshot_old(void)
 static struct platform_hibernation_ops acpi_hibernation_ops_old = {
         .begin = acpi_hibernation_begin_old,
         .end = acpi_pm_end,
-        .pre_snapshot = acpi_hibernation_pre_snapshot_old,
+        .pre_snapshot = acpi_pm_pre_suspend,
         .prepare = acpi_pm_freeze,
         .finish = acpi_pm_finish,
         .enter = acpi_hibernation_enter,