PCI: add struct pci_host_bridge and a list of all bridges found
This adds a list of all PCI host bridges we find and a way to look up
the host bridge from a pci_dev.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
diff --git a/include/linux/pci.h b/include/linux/pci.h
index bcaa51c..2c946b3 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -368,6 +368,11 @@
return (pdev->error_state != pci_channel_io_normal);
}
+struct pci_host_bridge {
+ struct list_head list;
+ struct pci_bus *bus; /* root bus */
+};
+
/*
* The first PCI_BRIDGE_RESOURCE_NUM PCI bus resources (those that correspond
* to P2P or CardBus bridge windows) go in a table. Additional ones (for