- struct comedi_driver *driv;
- int ret;
-
- if (dev->attached)
- return -EBUSY;
-
- for (driv = comedi_drivers; driv; driv = driv->next) {
- if (!try_module_get(driv->module))
- continue;
- if (driv->num_names) {
- dev->board_ptr = comedi_recognize(driv, it->board_name);
- if (dev->board_ptr)
- break;
- } else if (strcmp(driv->driver_name, it->board_name) == 0)
- break;
- module_put(driv->module);
- }
- if (driv == NULL) {
- /* recognize has failed if we get here */
- /* report valid board names before returning error */
- for (driv = comedi_drivers; driv; driv = driv->next) {
- if (!try_module_get(driv->module))
- continue;
- comedi_report_boards(driv);
- module_put(driv->module);
- }
- return -EIO;
- }
- if (driv->attach == NULL) {
- /* driver does not support manual configuration */
- dev_warn(dev->class_dev,
- "driver '%s' does not support attach using comedi_config\n",
- driv->driver_name);
- module_put(driv->module);
- return -ENOSYS;
- }
- /* initialize dev->driver here so
- * comedi_error() can be called from attach */
- dev->driver = driv;
- ret = driv->attach(dev, it);
- if (ret < 0) {
- module_put(dev->driver->module);
- __comedi_device_detach(dev);
- return ret;
- }
- return comedi_device_postconfig(dev);