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-rw-r--r--drivers/acpi/Makefile2
-rw-r--r--drivers/acpi/device_pm.c126
2 files changed, 65 insertions, 63 deletions
diff --git a/drivers/acpi/Makefile b/drivers/acpi/Makefile
index ecb743bf05a..7cad994ee44 100644
--- a/drivers/acpi/Makefile
+++ b/drivers/acpi/Makefile
@@ -24,7 +24,7 @@ acpi-y += nvs.o
# Power management related files
acpi-y += wakeup.o
acpi-y += sleep.o
-acpi-$(CONFIG_PM) += device_pm.o
+acpi-y += device_pm.o
acpi-$(CONFIG_ACPI_SLEEP) += proc.o
diff --git a/drivers/acpi/device_pm.c b/drivers/acpi/device_pm.c
index 96de787e610..bc493aa3af1 100644
--- a/drivers/acpi/device_pm.c
+++ b/drivers/acpi/device_pm.c
@@ -37,68 +37,6 @@
#define _COMPONENT ACPI_POWER_COMPONENT
ACPI_MODULE_NAME("device_pm");
-static DEFINE_MUTEX(acpi_pm_notifier_lock);
-
-/**
- * acpi_add_pm_notifier - Register PM notifier for given ACPI device.
- * @adev: ACPI device to add the notifier for.
- * @context: Context information to pass to the notifier routine.
- *
- * NOTE: @adev need not be a run-wake or wakeup device to be a valid source of
- * PM wakeup events. For example, wakeup events may be generated for bridges
- * if one of the devices below the bridge is signaling wakeup, even if the
- * bridge itself doesn't have a wakeup GPE associated with it.
- */
-acpi_status acpi_add_pm_notifier(struct acpi_device *adev,
- acpi_notify_handler handler, void *context)
-{
- acpi_status status = AE_ALREADY_EXISTS;
-
- mutex_lock(&acpi_pm_notifier_lock);
-
- if (adev->wakeup.flags.notifier_present)
- goto out;
-
- status = acpi_install_notify_handler(adev->handle,
- ACPI_SYSTEM_NOTIFY,
- handler, context);
- if (ACPI_FAILURE(status))
- goto out;
-
- adev->wakeup.flags.notifier_present = true;
-
- out:
- mutex_unlock(&acpi_pm_notifier_lock);
- return status;
-}
-
-/**
- * acpi_remove_pm_notifier - Unregister PM notifier from given ACPI device.
- * @adev: ACPI device to remove the notifier from.
- */
-acpi_status acpi_remove_pm_notifier(struct acpi_device *adev,
- acpi_notify_handler handler)
-{
- acpi_status status = AE_BAD_PARAMETER;
-
- mutex_lock(&acpi_pm_notifier_lock);
-
- if (!adev->wakeup.flags.notifier_present)
- goto out;
-
- status = acpi_remove_notify_handler(adev->handle,
- ACPI_SYSTEM_NOTIFY,
- handler);
- if (ACPI_FAILURE(status))
- goto out;
-
- adev->wakeup.flags.notifier_present = false;
-
- out:
- mutex_unlock(&acpi_pm_notifier_lock);
- return status;
-}
-
/**
* acpi_power_state_string - String representation of ACPI device power state.
* @state: ACPI device power state to return the string representation of.
@@ -385,6 +323,69 @@ bool acpi_bus_power_manageable(acpi_handle handle)
}
EXPORT_SYMBOL(acpi_bus_power_manageable);
+#ifdef CONFIG_PM
+static DEFINE_MUTEX(acpi_pm_notifier_lock);
+
+/**
+ * acpi_add_pm_notifier - Register PM notifier for given ACPI device.
+ * @adev: ACPI device to add the notifier for.
+ * @context: Context information to pass to the notifier routine.
+ *
+ * NOTE: @adev need not be a run-wake or wakeup device to be a valid source of
+ * PM wakeup events. For example, wakeup events may be generated for bridges
+ * if one of the devices below the bridge is signaling wakeup, even if the
+ * bridge itself doesn't have a wakeup GPE associated with it.
+ */
+acpi_status acpi_add_pm_notifier(struct acpi_device *adev,
+ acpi_notify_handler handler, void *context)
+{
+ acpi_status status = AE_ALREADY_EXISTS;
+
+ mutex_lock(&acpi_pm_notifier_lock);
+
+ if (adev->wakeup.flags.notifier_present)
+ goto out;
+
+ status = acpi_install_notify_handler(adev->handle,
+ ACPI_SYSTEM_NOTIFY,
+ handler, context);
+ if (ACPI_FAILURE(status))
+ goto out;
+
+ adev->wakeup.flags.notifier_present = true;
+
+ out:
+ mutex_unlock(&acpi_pm_notifier_lock);
+ return status;
+}
+
+/**
+ * acpi_remove_pm_notifier - Unregister PM notifier from given ACPI device.
+ * @adev: ACPI device to remove the notifier from.
+ */
+acpi_status acpi_remove_pm_notifier(struct acpi_device *adev,
+ acpi_notify_handler handler)
+{
+ acpi_status status = AE_BAD_PARAMETER;
+
+ mutex_lock(&acpi_pm_notifier_lock);
+
+ if (!adev->wakeup.flags.notifier_present)
+ goto out;
+
+ status = acpi_remove_notify_handler(adev->handle,
+ ACPI_SYSTEM_NOTIFY,
+ handler);
+ if (ACPI_FAILURE(status))
+ goto out;
+
+ adev->wakeup.flags.notifier_present = false;
+
+ out:
+ mutex_unlock(&acpi_pm_notifier_lock);
+ return status;
+}
+
bool acpi_bus_can_wakeup(acpi_handle handle)
{
struct acpi_device *device;
@@ -1023,3 +1024,4 @@ void acpi_dev_pm_remove_dependent(acpi_handle handle, struct device *depdev)
mutex_unlock(&adev->physical_node_lock);
}
EXPORT_SYMBOL_GPL(acpi_dev_pm_remove_dependent);
+#endif /* CONFIG_PM */