diff --git a/sys/external/bsd/drm2/via/via_pci.c b/sys/external/bsd/drm2/via/via_pci.c
index 3cdf5845e0fa..9c821e33412b 100644
--- a/sys/external/bsd/drm2/via/via_pci.c
+++ b/sys/external/bsd/drm2/via/via_pci.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: via_pci.c,v 1.3 2018/08/27 14:12:44 riastradh Exp $	*/
+/*	$NetBSD: via_pci.c,v 1.4 2020/07/20 21:29:38 riastradh Exp $	*/
 
 /*-
  * Copyright (c) 2015 The NetBSD Foundation, Inc.
@@ -30,7 +30,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: via_pci.c,v 1.3 2018/08/27 14:12:44 riastradh Exp $");
+__KERNEL_RCSID(0, "$NetBSD: via_pci.c,v 1.4 2020/07/20 21:29:38 riastradh Exp $");
 
 #include <sys/types.h>
 #include <sys/device.h>
@@ -70,6 +70,9 @@ viadrm_lookup(const struct pci_attach_args *pa)
 	unsigned i;
 
 	for (i = 0; i < __arraycount(viadrm_pci_ids); i++) {
+		if (viadrm_pci_ids[i].vendor == 0 &&
+		    viadrm_pci_ids[i].device == 0)
+			break;
 		KASSERT(viadrm_pci_ids[i].subvendor == PCI_ANY_ID);
 		KASSERT(viadrm_pci_ids[i].subdevice == PCI_ANY_ID);
 		KASSERT(viadrm_pci_ids[i].class == 0);