1 files changed, 25 insertions, 0 deletions
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index 71eac9cd724d..0e84e8c2a6d0 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -1667,6 +1667,31 @@ EXPORT_SYMBOL(pci_scan_bus);
 
 #ifdef CONFIG_HOTPLUG
 /**
+ * pci_rescan_bus_bridge_resize - scan a PCI bus for devices.
+ * @bridge: PCI bridge for the bus to scan
+ *
+ * Scan a PCI bus and child buses for new devices, add them,
+ * and enable them, resizing bridge mmio/io resource if necessary
+ * and possible.  The caller must ensure the child devices are already
+ * removed for resizing to occur.
+ *
+ * Returns the max number of subordinate bus discovered.
+ */
+unsigned int __ref pci_rescan_bus_bridge_resize(struct pci_dev *bridge)
+{
+	unsigned int max;
+	struct pci_bus *bus = bridge->subordinate;
+
+	max = pci_scan_child_bus(bus);
+
+	pci_assign_unassigned_bridge_resources(bridge);
+
+	pci_bus_add_devices(bus);
+
+	return max;
+}
+
+/**
  * pci_rescan_bus - scan a PCI bus for devices.
  * @bus: PCI bus to scan
  *