Merge branch 'pci/reset'

- Wait for each level of downstream bus, not just the first, to become
  accessible before restoring devices on that bus (Ilpo Järvinen)

* pci/reset:
  PCI: Wait for Link before restoring Downstream Buses

Author: bjorn-helgaas

drivers/pci/pci.c

@@ -5694,8 +5694,10 @@ static void pci_bus_restore_locked(struct pci_bus *bus)
 
 	list_for_each_entry(dev, &bus->devices, bus_list) {
 		pci_dev_restore(dev);
-		if (dev->subordinate)
+		if (dev->subordinate) {
+			pci_bridge_wait_for_secondary_bus(dev, "bus reset");
 			pci_bus_restore_locked(dev->subordinate);
+		}
 	}
 }
 
@@ -5729,8 +5731,10 @@ static void pci_slot_restore_locked(struct pci_slot *slot)
 		if (!dev->slot || dev->slot != slot)
 			continue;
 		pci_dev_restore(dev);
-		if (dev->subordinate)
+		if (dev->subordinate) {
+			pci_bridge_wait_for_secondary_bus(dev, "slot reset");
 			pci_bus_restore_locked(dev->subordinate);
+		}
 	}
 }