ClabureDB: Classified Bug-Reports Database

int pci_hp_register(struct hotplug_slot *slot, struct pci_bus *bus, int slot_nr,
                        const char *name)
{
        int result;
        struct pci_slot *pci_slot;

        if (slot == NULL)
                return -ENODEV;
        if ((slot->info == NULL) || (slot->ops == NULL))
                return -EINVAL;
        if (slot->release == NULL) {
                dbg("Why are you trying to register a hotplug slot "
                    "without a proper release function?\n");
                return -EINVAL;
        }

        mutex_lock(&pci_hp_mutex);

        /*
         * No problems if we call this interface from both ACPI_PCI_SLOT
         * driver and call it here again. If we've already created the
         * pci_slot, the interface will simply bump the refcount.
         */
        pci_slot = pci_create_slot(bus, slot_nr, name, slot);
        if (IS_ERR(pci_slot)) {
                result = PTR_ERR(pci_slot);
                goto out;
        }

        slot->pci_slot = pci_slot;
        pci_slot->hotplug = slot;

        list_add(&slot->slot_list, &pci_hotplug_slot_list);

        result = fs_add_slot(pci_slot);
        kobject_uevent(&pci_slot->kobj, KOBJ_ADD);
        dbg("Added slot %s to the list\n", name);
out:
        mutex_unlock(&pci_hp_mutex);
        return result;
}