--- zzzz-none-000/linux-3.10.107/arch/frv/mb93090-mb00/pci-vdk.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/arch/frv/mb93090-mb00/pci-vdk.c	2021-02-04 17:41:59.000000000 +0000
@@ -25,7 +25,6 @@
 
 unsigned int __nongpreldata pci_probe = 1;
 
-int  __nongpreldata pcibios_last_bus = -1;
 struct pci_ops *__nongpreldata pci_root_ops;
 
 /*
@@ -169,8 +168,8 @@
 }
 
 static struct pci_ops pci_direct_frv = {
-	pci_frv_read_config,
-	pci_frv_write_config,
+	.read = pci_frv_read_config,
+	.write = pci_frv_write_config,
 };
 
 /*
@@ -220,37 +219,6 @@
 }
 
 /*
- * Discover remaining PCI buses in case there are peer host bridges.
- * We use the number of last PCI bus provided by the PCI BIOS.
- */
-static void __init pcibios_fixup_peer_bridges(void)
-{
-	struct pci_bus bus;
-	struct pci_dev dev;
-	int n;
-	u16 l;
-
-	if (pcibios_last_bus <= 0 || pcibios_last_bus >= 0xff)
-		return;
-	printk("PCI: Peer bridge fixup\n");
-	for (n=0; n <= pcibios_last_bus; n++) {
-		if (pci_find_bus(0, n))
-			continue;
-		bus.number = n;
-		bus.ops = pci_root_ops;
-		dev.bus = &bus;
-		for(dev.devfn=0; dev.devfn<256; dev.devfn += 8)
-			if (!pci_read_config_word(&dev, PCI_VENDOR_ID, &l) &&
-			    l != 0x0000 && l != 0xffff) {
-				printk("Found device at %02x:%02x [%04x]\n", n, dev.devfn, l);
-				printk("PCI: Discovered peer bus %02x\n", n);
-				pci_scan_bus(n, pci_root_ops, NULL);
-				break;
-			}
-	}
-}
-
-/*
  * Exceptions for specific devices. Usually work-arounds for fatal design flaws.
  */
 
@@ -320,7 +288,7 @@
  *  are examined.
  */
 
-void __init pcibios_fixup_bus(struct pci_bus *bus)
+void pcibios_fixup_bus(struct pci_bus *bus)
 {
 #if 0
 	printk("### PCIBIOS_FIXUP_BUS(%d)\n",bus->number);
@@ -348,6 +316,7 @@
 
 int __init pcibios_init(void)
 {
+	struct pci_bus *bus;
 	struct pci_ops *dir = NULL;
 	LIST_HEAD(resources);
 
@@ -415,13 +384,15 @@
 	printk("PCI: Probing PCI hardware\n");
 	pci_add_resource(&resources, &pci_ioport_resource);
 	pci_add_resource(&resources, &pci_iomem_resource);
-	pci_scan_root_bus(NULL, 0, pci_root_ops, NULL, &resources);
+	bus = pci_scan_root_bus(NULL, 0, pci_root_ops, NULL, &resources);
 
 	pcibios_irq_init();
-	pcibios_fixup_peer_bridges();
 	pcibios_fixup_irqs();
 	pcibios_resource_survey();
+	if (!bus)
+		return 0;
 
+	pci_bus_add_devices(bus);
 	return 0;
 }
 
@@ -432,9 +403,6 @@
 	if (!strcmp(str, "off")) {
 		pci_probe = 0;
 		return NULL;
-	} else if (!strncmp(str, "lastbus=", 8)) {
-		pcibios_last_bus = simple_strtol(str+8, NULL, 0);
-		return NULL;
 	}
 	return str;
 }