wq_device
struct wq_device;
struct wq_device *wq_dev; /* I: for sysfs interface */
struct wq_device *wq_dev = container_of(dev, struct wq_device, dev);
struct wq_device *wq_dev = container_of(dev, struct wq_device, dev);
struct wq_device *wq_dev;
struct wq_device *wq_dev = wq->wq_dev;