--- //depot/vendor/freebsd/src/sys/dev/acpica/acpi_video.c	2005/09/11 18:40:38
+++ //depot/user/jhb/agp/dev/acpica/acpi_video.c	2005/12/15 18:47:57
@@ -70,6 +70,7 @@
 
 /* interfaces */
 static int	acpi_video_modevent(struct module*, int, void *);
+static void	acpi_video_identify(driver_t *driver, device_t parent);
 static int	acpi_video_probe(device_t);
 static int	acpi_video_attach(device_t);
 static int	acpi_video_detach(device_t);
@@ -137,6 +138,7 @@
 #define DSS_COMMIT		(1 << 31)
 
 static device_method_t acpi_video_methods[] = {
+	DEVMETHOD(device_identify, acpi_video_identify),
 	DEVMETHOD(device_probe, acpi_video_probe),
 	DEVMETHOD(device_attach, acpi_video_attach),
 	DEVMETHOD(device_detach, acpi_video_detach),
@@ -152,7 +154,7 @@
 
 static devclass_t acpi_video_devclass;
 
-DRIVER_MODULE(acpi_video, pci, acpi_video_driver, acpi_video_devclass,
+DRIVER_MODULE(acpi_video, vgapci, acpi_video_driver, acpi_video_devclass,
 	      acpi_video_modevent, NULL);
 MODULE_DEPEND(acpi_video, acpi, 1, 1, 1);
 
@@ -189,6 +191,25 @@
 	return (err);
 }
 
+static void
+acpi_video_identify(driver_t *driver, device_t parent)
+{
+	devclass_t dc;
+	device_t *children;
+	int count, i;
+
+	dc = devclass_find("acpi_video");
+	if (device_get_children(parent, &children, &count) != 0)
+		return;
+	for (i = 0; i < count; i++) {
+		if (device_get_devclass(children[i]) == dc)
+			break;
+	}
+	free(children, M_TEMP);
+	if (i == count)
+		device_add_child(parent, "acpi_video", -1);
+}
+
 static int
 acpi_video_probe(device_t dev)
 {