At Tue, 4 Mar 2008 17:48:40 -0700,
Alex Chiang <achiang@xxxxxx> wrote:
>
> +struct pci_slot *pci_create_slot(struct pci_bus *parent, int slot_nr,
> + const char *name)
> +{
> + struct pci_slot *slot;
> + int err;
> +
> + down_write(&pci_bus_sem);
> +
> + /* If we've already created this slot, bump refcount and return. */
> + for (slot = parent->slot; slot; slot = slot->next) {
> + if (slot->number == slot_nr) {
> + kobject_get(&slot->kobj);
> + dbg("%s: bumped refcount to %d on %x:%d\n",
> + __FUNCTION__, slot->kobj.kref.refcount,
> + parent->number, slot_nr);
> + goto out;
> + }
> + }
> +
> + slot = kzalloc(sizeof(*slot), GFP_KERNEL);
> + if (!slot) {
> + slot = ERR_PTR(-ENOMEM);
> + goto out;
> + }
> +
> + slot->bus = parent;
> + slot->number = slot_nr;
> +
> + slot->kobj.kset = pci_slots_kset;
> + err = kobject_init_and_add(&slot->kobj, &pci_slot_ktype, NULL,
> + "%s", name);
> + if (err) {
> + printk(KERN_ERR "Unable to register kobject %s", name);
Add '\n', please.
> + err = -EINVAL;
> + goto err;
> + }
> +
> + err = create_sysfs_files(slot);
> + if (err)
> + goto unregister;
> +
> + slot->next = parent->slot;
> + parent->slot = slot;
> +
> + dbg("%s: created pci_slot on %x:%d\n",
> + __FUNCTION__, parent->number, slot_nr);
> +
> + out:
> + up_write(&pci_bus_sem);
> + return slot;
> +
> + unregister:
> + kobject_put(&slot->kobj);
> + err:
> + kfree(slot);
> + slot = ERR_PTR(err);
> + goto out;
> +}
> +EXPORT_SYMBOL_GPL(pci_create_slot);
> +
> +int pci_destroy_slot(struct pci_slot *slot)
> +{
> + kobject_put(&slot->kobj);
> +
> + dbg("%s: decreased refcount to %d on %x:%d\n", __FUNCTION__,
> + slot->kobj.kref.refcount, slot->bus->number, slot->number);
> + return 0;
> +}
> +EXPORT_SYMBOL_GPL(pci_destroy_slot);
> +
> +static int pci_slot_init(void)
> +{
> + int result = 0;
> + struct kset *pci_bus_kset;
> +
> + pci_bus_kset = bus_get_kset(&pci_bus_type);
> +
> + pci_slots_kset = kset_create_and_add("slots", NULL,
> + &pci_bus_kset->kobj);
> + if (!pci_slots_kset) {
> + result = -ENOMEM;
> + printk(KERN_ERR "PCI: Slot initialisation failure (%d)",
> + result);
Ditto.
And 'initialisation' -> 'initialization' ?
> + }
> + return result;
> +}
> +
> +subsys_initcall(pci_slot_init);
Thanks,
MUNE
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