+int pcmcia_register_client(client_handle_t *handle, client_reg_t *req)
+{
+ client_t *client = NULL;
+ struct pcmcia_socket *s;
+ struct pcmcia_bus_socket *skt = NULL;
+ struct pcmcia_device *p_dev = NULL;
+
+ /* Look for unbound client with matching dev_info */
+ down_read(&pcmcia_socket_list_rwsem);
+ list_for_each_entry(s, &pcmcia_socket_list, socket_list) {
+ unsigned long flags;
+
+ if (s->state & SOCKET_CARDBUS)
+ continue;
+
+ skt = s->pcmcia;
+ if (!skt)
+ continue;
+ skt = pcmcia_get_bus_socket(skt);
+ if (!skt)
+ continue;
+ spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
+ list_for_each_entry(p_dev, &skt->devices_list, socket_device_list) {
+ struct pcmcia_driver *p_drv;
+ p_dev = pcmcia_get_dev(p_dev);
+ if (!p_dev)
+ continue;
+ if (!(p_dev->client.state & CLIENT_UNBOUND) ||
+ (!p_dev->dev.driver)) {
+ pcmcia_put_dev(p_dev);
+ continue;
+ }
+ p_drv = to_pcmcia_drv(p_dev->dev.driver);
+ if (!strncmp(p_drv->drv.name, (char *)req->dev_info, DEV_NAME_LEN)) {
+ client = &p_dev->client;
+ spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
+ goto found;
+ }
+ pcmcia_put_dev(p_dev);
+ }
+ spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
+ pcmcia_put_bus_socket(skt);
+ }
+ found:
+ up_read(&pcmcia_socket_list_rwsem);
+ if (!p_dev || !client)
+ return -ENODEV;
+
+ pcmcia_put_bus_socket(skt); /* safe, as we already hold a reference from bind_device */
+
+ /*
+ * Prevent this racing with a card insertion.
+ */
+ down(&s->skt_sem);
+ *handle = client;
+ client->state &= ~CLIENT_UNBOUND;
+ client->Socket = s;
+ client->EventMask = req->EventMask;
+ client->event_handler = req->event_handler;
+ client->event_callback_args = req->event_callback_args;
+ client->event_callback_args.client_handle = client;
+
+ if (s->state & SOCKET_CARDBUS)
+ client->state |= CLIENT_CARDBUS;
+
+ if ((!(s->state & SOCKET_CARDBUS)) && (s->functions == 0) &&
+ (client->Function != BIND_FN_ALL)) {
+ cistpl_longlink_mfc_t mfc;
+ if (pccard_read_tuple(s, client->Function, CISTPL_LONGLINK_MFC, &mfc)
+ == CS_SUCCESS)
+ s->functions = mfc.nfn;
+ else
+ s->functions = 1;
+ s->config = kmalloc(sizeof(config_t) * s->functions,
+ GFP_KERNEL);
+ if (!s->config)
+ goto out_no_resource;
+ memset(s->config, 0, sizeof(config_t) * s->functions);
+ }
+
+ ds_dbg(1, "register_client(): client 0x%p, dev %s\n",
+ client, p_dev->dev.bus_id);
+ if (client->EventMask & CS_EVENT_REGISTRATION_COMPLETE)
+ EVENT(client, CS_EVENT_REGISTRATION_COMPLETE, CS_EVENT_PRI_LOW);
+
+ if ((s->state & (SOCKET_PRESENT|SOCKET_CARDBUS)) == SOCKET_PRESENT) {
+ if (client->EventMask & CS_EVENT_CARD_INSERTION)
+ EVENT(client, CS_EVENT_CARD_INSERTION, CS_EVENT_PRI_LOW);
+ }
+
+ up(&s->skt_sem);
+ return CS_SUCCESS;
+
+ out_no_resource:
+ up(&s->skt_sem);
+ pcmcia_put_dev(p_dev);
+ return CS_OUT_OF_RESOURCE;
+} /* register_client */
+EXPORT_SYMBOL(pcmcia_register_client);
+
+