Index: drmP.h
===================================================================
RCS file: /home/ncvs/src/sys/dev/drm/drmP.h,v
retrieving revision 1.18
diff -u -r1.18 drmP.h
--- drmP.h	6 Nov 2006 13:41:53 -0000	1.18
+++ drmP.h	2 Oct 2008 14:56:15 -0000
@@ -82,6 +82,7 @@
 #if __FreeBSD_version >= 500000
 #include <sys/mutex.h>
 #include <dev/pci/pcivar.h>
+#include <dev/pci/pcireg.h>
 #include <sys/selinfo.h>
 #else /* __FreeBSD_version >= 500000 */
 #include <pci/pcivar.h>
Index: drm_drv.c
===================================================================
RCS file: /home/ncvs/src/sys/dev/drm/drm_drv.c,v
retrieving revision 1.6.2.1
diff -u -r1.6.2.1 drm_drv.c
--- drm_drv.c	29 Jan 2008 01:19:31 -0000	1.6.2.1
+++ drm_drv.c	2 Oct 2008 14:56:15 -0000
@@ -167,6 +167,10 @@
 	device = pci_get_device(dev);
 #endif
 
+	if (pci_get_class(dev) != PCIC_DISPLAY
+	    || pci_get_subclass(dev) != PCIS_DISPLAY_VGA)
+		return ENXIO;
+
 	id_entry = drm_find_description(vendor, device, idlist);
 	if (id_entry != NULL) {
 		device_set_desc(dev, id_entry->name);