diff --git a/[refs] b/[refs]
index 0cf70f5b3073..814148f5c20b 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 3b9038912828384e38d82409c281124631c8533b
+refs/heads/master: d3e17deb1790ee2123e9d11420be6411d1768b47
diff --git a/trunk/include/linux/irqdesc.h b/trunk/include/linux/irqdesc.h
index 0b30662bc36c..1595f9176b43 100644
--- a/trunk/include/linux/irqdesc.h
+++ b/trunk/include/linux/irqdesc.h
@@ -191,6 +191,15 @@ static inline void __set_irq_handler_unlocked(int irq,
 	desc->handle_irq = handler;
 }
 
+static inline void
+irq_set_lockdep_class(unsigned int irq, struct lock_class_key *class)
+{
+	struct irq_desc *desc = irq_to_desc(irq);
+
+	if (desc)
+		lockdep_set_class(&desc->lock, class);
+}
+
 #ifdef CONFIG_IRQ_PREFLOW_FASTEOI
 static inline void
 __irq_set_preflow_handler(unsigned int irq, irq_preflow_handler_t handler)