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| author | Yinghai Lu <yinghai@kernel.org> | 2012-10-30 14:31:38 -0600 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2012-11-03 16:26:37 -0600 |
| commit | cdfcc572be0a8b423cecfb4ab5fd735fafe9c54a (patch) | |
| tree | df188f735b592a2a359969d451ed3dc51ac6e55a | |
| parent | 62a08c5a3173c4462239804b959c0d29dc74493b (diff) | |
| download | op-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>
| -rw-r--r-- | drivers/pci/remove.c | 36 | ||||
| -rw-r--r-- | include/linux/pci.h | 2 |
2 files changed, 38 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); +} diff --git a/include/linux/pci.h b/include/linux/pci.h index f543eb3..7860942 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -712,6 +712,8 @@ extern struct pci_dev *pci_dev_get(struct pci_dev *dev); extern void pci_dev_put(struct pci_dev *dev); extern void pci_remove_bus(struct pci_bus *b); extern void pci_stop_and_remove_bus_device(struct pci_dev *dev); +void pci_stop_root_bus(struct pci_bus *bus); +void pci_remove_root_bus(struct pci_bus *bus); void pci_setup_cardbus(struct pci_bus *bus); extern void pci_sort_breadthfirst(void); #define dev_is_pci(d) ((d)->bus == &pci_bus_type) |
