--- linux-2.6.27.orig/ubuntu/qc-usb/qc-driver.c	2008-09-10 15:58:01.000000000 +0200
+++ linux-2.6.27/ubuntu/qc-usb/qc-driver.c	2008-09-19 02:58:33.000000000 +0200
@@ -3152,6 +3152,7 @@
 
 		/* Register V4L video device */
 		memcpy(&qc->vdev, &qc_v4l_template, sizeof(qc_v4l_template));
+		qc->vdev.parent = &usbdev->dev;
 		qc->vdev.priv = qc;
 		r = video_register_device(&qc->vdev, VFL_TYPE_GRABBER, video_nr);
 		if (r<0) goto fail3;