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authorRafael J. Wysocki <rjw@sisk.pl>2010-07-02 00:14:09 +0200
committerLen Brown <len.brown@intel.com>2010-07-06 22:14:19 -0400
commitc5f7a1bb65bca03253c189e946b3ca79669f08af (patch)
treeb8a85641a64c0c6b28376ac33eb21aa63de592b2
parent78f5f023167813130d2cf657d1b9eadc32f0e992 (diff)
downloadop-kernel-dev-c5f7a1bb65bca03253c189e946b3ca79669f08af.zip
op-kernel-dev-c5f7a1bb65bca03253c189e946b3ca79669f08af.tar.gz
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>
-rw-r--r--drivers/acpi/sleep.c42
1 files changed, 16 insertions, 26 deletions
diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c
index 93441c9..61c5bd0 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,
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