1 files changed, 57 insertions, 17 deletions

diff --git a/drivers/acpi/device_pm.c b/drivers/acpi/device_pm.c
index 8105298..b4f03f9 100644
--- a/drivers/acpi/device_pm.c
+++ b/drivers/acpi/device_pm.c
@@ -200,38 +200,78 @@ EXPORT_SYMBOL_GPL(acpi_device_power_state);
 
 #ifdef CONFIG_PM_RUNTIME
 /**
- * acpi_pm_device_run_wake - Enable/disable remote wakeup for given device.
- * @phys_dev: Device to enable/disable the platform to wake up.
+ * __acpi_device_run_wake - Enable/disable runtime remote wakeup for device.
+ * @adev: ACPI device to enable/disable the remote wakeup for.
  * @enable: Whether to enable or disable the wakeup functionality.
  *
- * Find the ACPI device object corresponding to @phys_dev and try to
- * enable/disable the GPE associated with it, so that it can generate
- * wakeup signals for the device in response to external (remote) events.
+ * Enable/disable the GPE associated with @adev so that it can generate
+ * wakeup signals for the device in response to external (remote) events and
+ * enable/disable device wakeup power.
+ *
+ * Callers must ensure that @adev is a valid ACPI device node before executing
+ * this function.
+ */
+int __acpi_device_run_wake(struct acpi_device *adev, bool enable)
+{
+	struct acpi_device_wakeup *wakeup = &adev->wakeup;
+
+	if (enable) {
+		acpi_status res;
+		int error;
+
+		error = acpi_enable_wakeup_device_power(adev, ACPI_STATE_S0);
+		if (error)
+			return error;
+
+		res = acpi_enable_gpe(wakeup->gpe_device, wakeup->gpe_number);
+		if (ACPI_FAILURE(res)) {
+			acpi_disable_wakeup_device_power(adev);
+			return -EIO;
+		}
+	} else {
+		acpi_disable_gpe(wakeup->gpe_device, wakeup->gpe_number);
+		acpi_disable_wakeup_device_power(adev);
+	}
+	return 0;
+}
+
+/**
+ * acpi_pm_device_run_wake - Enable/disable remote wakeup for given device.
+ * @dev: Device to enable/disable the platform to wake up.
+ * @enable: Whether to enable or disable the wakeup functionality.
  */
 int acpi_pm_device_run_wake(struct device *phys_dev, bool enable)
 {
-	struct acpi_device *dev;
+	struct acpi_device *adev;
 	acpi_handle handle;
 
 	if (!device_run_wake(phys_dev))
 		return -EINVAL;
 
 	handle = DEVICE_ACPI_HANDLE(phys_dev);
-	if (!handle || ACPI_FAILURE(acpi_bus_get_device(handle, &dev))) {
-		dev_dbg(phys_dev, "ACPI handle has no context in %s!\n",
+	if (!handle || ACPI_FAILURE(acpi_bus_get_device(handle, &adev))) {
+		dev_dbg(phys_dev, "ACPI handle without context in %s!\n",
 			__func__);
 		return -ENODEV;
 	}
 
-	if (enable) {
-		acpi_enable_wakeup_device_power(dev, ACPI_STATE_S0);
-		acpi_enable_gpe(dev->wakeup.gpe_device, dev->wakeup.gpe_number);
-	} else {
-		acpi_disable_gpe(dev->wakeup.gpe_device, dev->wakeup.gpe_number);
-		acpi_disable_wakeup_device_power(dev);
-	}
-
-	return 0;
+	return __acpi_device_run_wake(adev, enable);
 }
 EXPORT_SYMBOL(acpi_pm_device_run_wake);
 #endif /* CONFIG_PM_RUNTIME */
+
+ #ifdef CONFIG_PM_SLEEP
+/**
+ * __acpi_device_sleep_wake - Enable or disable device to wake up the system.
+ * @dev: Device to enable/desible to wake up the system.
+ * @target_state: System state the device is supposed to wake up from.
+ * @enable: Whether to enable or disable @dev to wake up the system.
+ */
+int __acpi_device_sleep_wake(struct acpi_device *adev, u32 target_state,
+			     bool enable)
+{
+	return enable ?
+		acpi_enable_wakeup_device_power(adev, target_state) :
+		acpi_disable_wakeup_device_power(adev);
+}
+#endif /* CONFIG_PM_SLEEP */