1 files changed, 16 insertions, 0 deletions

diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index 2dcd22d9c816..bbe4be7fc685 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -1632,6 +1632,18 @@ unsigned int pci_scan_child_bus(struct pci_bus *bus)
         return max;
 }
 
+/**
+ * pcibios_root_bridge_prepare - Platform-specific host bridge setup.
+ * @bridge: Host bridge to set up.
+ *
+ * Default empty implementation.  Replace with an architecture-specific setup
+ * routine, if necessary.
+ */
+int __weak pcibios_root_bridge_prepare(struct pci_host_bridge *bridge)
+{
+        return 0;
+}
+
 struct pci_bus *pci_create_root_bus(struct device *parent, int bus,
                 struct pci_ops *ops, void *sysdata, struct list_head *resources)
 {
@@ -1665,6 +1677,10 @@ struct pci_bus *pci_create_root_bus(struct device *parent, int bus,
         bridge->dev.parent = parent;
         bridge->dev.release = pci_release_bus_bridge_dev;
         dev_set_name(&bridge->dev, "pci%04x:%02x", pci_domain_nr(b), bus);
+        error = pcibios_root_bridge_prepare(bridge);
+        if (error)
+                goto bridge_dev_reg_err;
+
         error = device_register(&bridge->dev);
         if (error)
                 goto bridge_dev_reg_err;