to_serdev_controller
serdev = serdev_device_alloc(to_serdev_controller(ctrl_dev));
serdev = serdev_device_alloc(to_serdev_controller(ctrl_dev));
serdev = serdev_device_alloc(to_serdev_controller(ctrl_dev));
return (dev && dev->type == &serdev_ctrl_type) ? to_serdev_controller(dev) : NULL;
struct serdev_controller *ctrl = to_serdev_controller(dev);