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authorYinghai Lu <yinghai@kernel.org>2012-10-30 14:31:38 -0600
committerBjorn Helgaas <bhelgaas@google.com>2012-11-03 16:26:37 -0600
commitcdfcc572be0a8b423cecfb4ab5fd735fafe9c54a (patch)
treedf188f735b592a2a359969d451ed3dc51ac6e55a /drivers/pci/remove.c
parent62a08c5a3173c4462239804b959c0d29dc74493b (diff)
downloadop-kernel-dev-cdfcc572be0a8b423cecfb4ab5fd735fafe9c54a.zip
op-kernel-dev-cdfcc572be0a8b423cecfb4ab5fd735fafe9c54a.tar.gz
PCI: Add pci_stop_and_remove_root_bus()
It supports both PCI root bus and PCI bus under PCI bridge. Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'drivers/pci/remove.c')
-rw-r--r--drivers/pci/remove.c36
1 files changed, 36 insertions, 0 deletions
diff --git a/drivers/pci/remove.c b/drivers/pci/remove.c
index 513972f..7c0fd92 100644
--- a/drivers/pci/remove.c
+++ b/drivers/pci/remove.c
@@ -111,3 +111,39 @@ void pci_stop_and_remove_bus_device(struct pci_dev *dev)
pci_remove_bus_device(dev);
}
EXPORT_SYMBOL(pci_stop_and_remove_bus_device);
+
+void pci_stop_root_bus(struct pci_bus *bus)
+{
+ struct pci_dev *child, *tmp;
+ struct pci_host_bridge *host_bridge;
+
+ if (!pci_is_root_bus(bus))
+ return;
+
+ host_bridge = to_pci_host_bridge(bus->bridge);
+ list_for_each_entry_safe_reverse(child, tmp,
+ &bus->devices, bus_list)
+ pci_stop_bus_device(child);
+
+ /* stop the host bridge */
+ device_del(&host_bridge->dev);
+}
+
+void pci_remove_root_bus(struct pci_bus *bus)
+{
+ struct pci_dev *child, *tmp;
+ struct pci_host_bridge *host_bridge;
+
+ if (!pci_is_root_bus(bus))
+ return;
+
+ host_bridge = to_pci_host_bridge(bus->bridge);
+ list_for_each_entry_safe(child, tmp,
+ &bus->devices, bus_list)
+ pci_remove_bus_device(child);
+ pci_remove_bus(bus);
+ host_bridge->bus = NULL;
+
+ /* remove the host bridge */
+ put_device(&host_bridge->dev);
+}
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