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authorJiang Liu <liuj97@gmail.com>2013-04-12 05:44:20 +0000
committerBjorn Helgaas <bhelgaas@google.com>2013-04-12 15:38:25 -0600
commit10a9574756201fbbdd0cac11f370f00d3d02bfa1 (patch)
tree3e2985b5a56e2c5bbc95b1e81e043a2f3ae20f83 /drivers/pci/remove.c
parentce15d873d05ebf3bf38579c4e0252140e28f1781 (diff)
PCI: Add pcibios hooks for adding and removing PCI buses
On ACPI-based platforms, the pci_slot driver creates PCI slot devices according to information from ACPI tables by registering an ACPI PCI subdriver. The ACPI PCI subdriver will only be called when creating/ destroying PCI root buses, and it won't be called when hot-plugging P2P bridges. It may cause stale PCI slot devices after hot-removing a P2P bridge if that bridge has associated PCI slots. And the acpiphp driver has the same issue too. This patch introduces two hook points into the PCI core, which will be invoked when creating/destroying PCI buses for PCI host and P2P bridges. They could be used to setup/destroy platform dependent stuff in a unified way, both at boot time and for PCI hotplug operations. Signed-off-by: Jiang Liu <jiang.liu@huawei.com> Signed-off-by: Yijing Wang <wangyijing@huawei.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Yinghai Lu <yinghai@kernel.org> Cc: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com> Cc: Toshi Kani <toshi.kani@hp.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Myron Stowe <myron.stowe@redhat.com>
Diffstat (limited to 'drivers/pci/remove.c')
-rw-r--r--drivers/pci/remove.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/pci/remove.c b/drivers/pci/remove.c
index a8318801c092..8fc54b7327bc 100644
--- a/drivers/pci/remove.c
+++ b/drivers/pci/remove.c
@@ -51,6 +51,7 @@ void pci_remove_bus(struct pci_bus *bus)
pci_bus_release_busn_res(bus);
up_write(&pci_bus_sem);
pci_remove_legacy_files(bus);
+ pcibios_remove_bus(bus);
device_unregister(&bus->dev);
}
EXPORT_SYMBOL(pci_remove_bus);