diff --git a/[refs] b/[refs]
index cb7972dd7b41..a218f105d844 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: a1531acd43310a7e4571d52e8846640667f4c74b
+refs/heads/master: 9b67c5d48f104aae6118bbb052dd79a15ab9794b
diff --git a/trunk/drivers/acpi/processor_perflib.c b/trunk/drivers/acpi/processor_perflib.c
index e98071a64810..0133af49cf06 100644
--- a/trunk/drivers/acpi/processor_perflib.c
+++ b/trunk/drivers/acpi/processor_perflib.c
@@ -95,10 +95,10 @@ static int acpi_processor_ppc_notifier(struct notifier_block *nb,
 	if (ignore_ppc)
 		return 0;
 
-	mutex_lock(&performance_mutex);
-
 	if (event != CPUFREQ_INCOMPATIBLE)
-		goto out;
+		return 0;
+
+	mutex_lock(&performance_mutex);
 
 	pr = per_cpu(processors, policy->cpu);
 	if (!pr || !pr->performance)