3 files changed, 22 insertions, 5 deletions
diff --git a/drivers/base/bus.c b/drivers/base/bus.c
index 59dc8086e4fa..83e910a57563 100644
--- a/drivers/base/bus.c
+++ b/drivers/base/bus.c
@@ -1218,7 +1218,7 @@ err_dev:
  * with the name of the subsystem. The root device can carry subsystem-
  * wide attributes. All registered devices are below this single root
  * device and are named after the subsystem with a simple enumeration
- * number appended. The registered devices are not explicitely named;
+ * number appended. The registered devices are not explicitly named;
  * only 'id' in the device needs to be set.
  *
  * Do not use this interface for anything new, it exists for compatibility
diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c
index 6f54962aae1d..ae098a261fcd 100644
--- a/drivers/base/power/domain.c
+++ b/drivers/base/power/domain.c
@@ -705,6 +705,14 @@ static int pm_genpd_runtime_resume(struct device *dev)
 	return 0;
 }
 
+static bool pd_ignore_unused;
+static int __init pd_ignore_unused_setup(char *__unused)
+{
+	pd_ignore_unused = true;
+	return 1;
+}
+__setup("pd_ignore_unused", pd_ignore_unused_setup);
+
 /**
  * pm_genpd_poweroff_unused - Power off all PM domains with no devices in use.
  */
@@ -712,6 +720,11 @@ void pm_genpd_poweroff_unused(void)
 {
 	struct generic_pm_domain *genpd;
 
+	if (pd_ignore_unused) {
+		pr_warn("genpd: Not disabling unused power domains\n");
+		return;
+	}
+
 	mutex_lock(&gpd_list_lock);
 
 	list_for_each_entry(genpd, &gpd_list, gpd_list_node)
diff --git a/drivers/base/topology.c b/drivers/base/topology.c
index ad9d17762664..bbcbd3c43926 100644
--- a/drivers/base/topology.c
+++ b/drivers/base/topology.c
@@ -160,16 +160,20 @@ static int topology_cpu_callback(struct notifier_block *nfb,
 static int topology_sysfs_init(void)
 {
 	int cpu;
-	int rc;
+	int rc = 0;
+
+	cpu_notifier_register_begin();
 
 	for_each_online_cpu(cpu) {
 		rc = topology_add_dev(cpu);
 		if (rc)
-			return rc;
+			goto out;
 	}
-	hotcpu_notifier(topology_cpu_callback, 0);
+	__hotcpu_notifier(topology_cpu_callback, 0);
 
-	return 0;
+out:
+	cpu_notifier_register_done();
+	return rc;
 }
 
 device_initcall(topology_sysfs_init);