Will use it to pci_bus_bridge_scan_resize() to make bridge will have pci_bus directory created correctly.
Signed-off-by: Yinghai Lu <[email protected]> --- drivers/pci/bus.c | 39 +++++++++++++++++++++++++++++++++++++++ include/linux/pci.h | 1 + 2 files changed, 40 insertions(+), 0 deletions(-) diff --git a/drivers/pci/bus.c b/drivers/pci/bus.c index 2882d01..950b786 100644 --- a/drivers/pci/bus.c +++ b/drivers/pci/bus.c @@ -259,6 +259,45 @@ void pci_bus_add_devices(const struct pci_bus *bus) } } +void pci_bus_add_single_device(struct pci_dev *dev) +{ + struct pci_bus *child; + int retval; + + /* Skip already-added devices */ + if (!dev->is_added) { + retval = pci_bus_add_device(dev); + if (retval) + dev_err(&dev->dev, "Error adding device, continuing\n"); + } + + BUG_ON(!dev->is_added); + + child = dev->subordinate; + /* + * If there is an unattached subordinate bus, attach + * it and then scan for unattached PCI devices. + */ + if (child) { + if (list_empty(&child->node)) { + down_write(&pci_bus_sem); + list_add_tail(&child->node, &dev->bus->children); + up_write(&pci_bus_sem); + } + pci_bus_add_devices(child); + + /* + * register the bus with sysfs as the parent is now + * properly registered. + */ + if (!child->is_added) { + retval = pci_bus_add_child(child); + if (retval) + dev_err(&dev->dev, "Error adding bus, continuing\n"); + } + } +} + void pci_enable_bridges(struct pci_bus *bus) { struct pci_dev *dev; diff --git a/include/linux/pci.h b/include/linux/pci.h index f994e93..4446448 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -700,6 +700,7 @@ void pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res, void pcibios_scan_specific_bus(int busn); extern struct pci_bus *pci_find_bus(int domain, int busnr); void pci_bus_add_devices(const struct pci_bus *bus); +void pci_bus_add_single_device(struct pci_dev *dev); struct pci_bus *pci_scan_bus_parented(struct device *parent, int bus, struct pci_ops *ops, void *sysdata); struct pci_bus *pci_scan_bus(int bus, struct pci_ops *ops, void *sysdata); -- 1.7.7 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
