diff --git a/drivers/xen/xen-pciback/pci_stub.c b/drivers/xen/xen-pciback/pci_stub.c
index 9cbe1a31c1e5bc98d5e0ba1d0eb8433b4d6d5410..8b77089eddac140ce65b0e12731b0407f89029d3 100644
--- a/drivers/xen/xen-pciback/pci_stub.c
+++ b/drivers/xen/xen-pciback/pci_stub.c
@@ -278,7 +278,7 @@ void pcistub_put_pci_dev(struct pci_dev *dev)
 	/* Cleanup our device
 	 * (so it's ready for the next domain)
 	 */
-	lockdep_assert_held(&dev->dev.mutex);
+	device_lock_assert(&dev->dev);
 	__pci_reset_function_locked(dev);
 	pci_restore_state(dev);
 
diff --git a/include/linux/device.h b/include/linux/device.h
index ce1f21608b168f9b1f1759f5f4eefd4c4d4beae5..41d6a7555c6bbb21c26b16fffd4fea4adcdfc763 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -911,6 +911,11 @@ static inline void device_unlock(struct device *dev)
 	mutex_unlock(&dev->mutex);
 }
 
+static inline void device_lock_assert(struct device *dev)
+{
+	lockdep_assert_held(&dev->mutex);
+}
+
 void driver_init(void);
 
 /*