diff --git a/[refs] b/[refs]
index d8135c680711..21c10e83af2e 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 720eba31f47aeade8ec130ca7f4353223c49170f
+refs/heads/master: 3fff0179e33cd7d0a688dab65700c46ad089e934
diff --git a/trunk/drivers/virtio/virtio_pci.c b/trunk/drivers/virtio/virtio_pci.c
index bef6b45e8a5c..330aacbdec1f 100644
--- a/trunk/drivers/virtio/virtio_pci.c
+++ b/trunk/drivers/virtio/virtio_pci.c
@@ -192,7 +192,7 @@ static irqreturn_t vp_interrupt(int irq, void *opaque)
 		drv = container_of(vp_dev->vdev.dev.driver,
 				   struct virtio_driver, driver);
 
-		if (drv->config_changed)
+		if (drv && drv->config_changed)
 			drv->config_changed(&vp_dev->vdev);
 	}