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authorThierry Reding <treding@nvidia.com>2016-02-09 15:30:47 +0100
committerBjorn Helgaas <bhelgaas@google.com>2016-03-08 15:40:37 -0600
commit057bd2e0528ec68b3d0481ede0b26a31a9e5d2f1 (patch)
tree625e014188543c4f109a06de166c61b72f64ca7a /drivers/pci
parent92e963f50fc74041b5e9e744c330dca48e04f08d (diff)
downloadop-kernel-dev-057bd2e0528ec68b3d0481ede0b26a31a9e5d2f1.zip
op-kernel-dev-057bd2e0528ec68b3d0481ede0b26a31a9e5d2f1.tar.gz
PCI: Add pci_ops.{add,remove}_bus() callbacks
Add pci_ops.{add,remove}_bus() callbacks, which will be called on every newly created bus and when a bus is being removed, respectively. This can be used by drivers to implement driver-specific initialization and teardown of the bus, in addition to the architecture-specifics implemented by the pcibios_add_bus() and the pcibios_remove_bus() functions. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'drivers/pci')
-rw-r--r--drivers/pci/probe.c6
-rw-r--r--drivers/pci/remove.c4
2 files changed, 10 insertions, 0 deletions
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index 6d7ab9b..3ea4de1 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -758,6 +758,12 @@ add_dev:
pcibios_add_bus(child);
+ if (child->ops->add_bus) {
+ ret = child->ops->add_bus(child);
+ if (WARN_ON(ret < 0))
+ dev_err(&child->dev, "failed to add bus: %d\n", ret);
+ }
+
/* Create legacy_io and legacy_mem files for this bus */
pci_create_legacy_files(child);
diff --git a/drivers/pci/remove.c b/drivers/pci/remove.c
index 8a280e9..d35c7fc 100644
--- a/drivers/pci/remove.c
+++ b/drivers/pci/remove.c
@@ -54,6 +54,10 @@ void pci_remove_bus(struct pci_bus *bus)
pci_bus_release_busn_res(bus);
up_write(&pci_bus_sem);
pci_remove_legacy_files(bus);
+
+ if (bus->ops->remove_bus)
+ bus->ops->remove_bus(bus);
+
pcibios_remove_bus(bus);
device_unregister(&bus->dev);
}
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