PCI: add host bridge release support

We need a hook to release host bridge resources allocated when creating
root bus.

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index 8d291ee15257..4c2f22668ea7 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -1137,7 +1137,8 @@ static void pci_release_bus_bridge_dev(struct device *dev)
 {
         struct pci_host_bridge *bridge = to_pci_host_bridge(dev);
 
-        /* TODO: need to free window->res */
+        if (bridge->release_fn)
+                bridge->release_fn(bridge);
 
         pci_free_resource_list(&bridge->windows);