Merge branch 'pm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6

* 'pm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6:
  ACPI / PM: Avoid infinite recurrence while registering power resources
  PM / Wakeup: Fix initialization of wakeup-related device sysfs files

3 files changed, 6 insertions, 1 deletions

diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index b136c9c..449c556 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -943,6 +943,10 @@ static int acpi_bus_get_flags(struct acpi_device *device)
 	if (ACPI_SUCCESS(status))
 		device->flags.lockable = 1;
 
+	/* Power resources cannot be power manageable. */
+	if (device->device_type == ACPI_BUS_TYPE_POWER)
+		return 0;
+
 	/* Presence of _PS0|_PR0 indicates 'power manageable' */
 	status = acpi_get_handle(device->handle, "_PS0", &temp);
 	if (ACPI_FAILURE(status))
diff --git a/drivers/base/power/main.c b/drivers/base/power/main.c
index fbc5b6e..abe3ab7 100644
--- a/drivers/base/power/main.c
+++ b/drivers/base/power/main.c
@@ -63,6 +63,7 @@ void device_pm_init(struct device *dev)
 	dev->power.wakeup = NULL;
 	spin_lock_init(&dev->power.lock);
 	pm_runtime_init(dev);
+	INIT_LIST_HEAD(&dev->power.entry);
 }
 
 /**
diff --git a/drivers/base/power/wakeup.c b/drivers/base/power/wakeup.c
index 4573c83..abbbd33 100644
--- a/drivers/base/power/wakeup.c
+++ b/drivers/base/power/wakeup.c
@@ -258,7 +258,7 @@ void device_set_wakeup_capable(struct device *dev, bool capable)
 	if (!!dev->power.can_wakeup == !!capable)
 		return;
 
-	if (device_is_registered(dev)) {
+	if (device_is_registered(dev) && !list_empty(&dev->power.entry)) {
 		if (capable) {
 			if (wakeup_sysfs_add(dev))
 				return;