--- zzzz-none-000/linux-3.10.107/drivers/xen/dbgp.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/drivers/xen/dbgp.c	2021-02-04 17:41:59.000000000 +0000
@@ -19,7 +19,7 @@
 	dbgp.op = op;
 
 #ifdef CONFIG_PCI
-	if (ctrlr->bus == &pci_bus_type) {
+	if (dev_is_pci(ctrlr)) {
 		const struct pci_dev *pdev = to_pci_dev(ctrlr);
 
 		dbgp.u.pci.seg = pci_domain_nr(pdev->bus);