246 void v4l2_prio_init(struct v4l2_prio_state *global)  in v4l2_prio_init()  argument
248 	memset(global, 0, sizeof(*global));  in v4l2_prio_init()
252 int v4l2_prio_change(struct v4l2_prio_state *global, enum v4l2_priority *local,  in v4l2_prio_change()  argument
260 	atomic_inc(&global->prios[new]);  in v4l2_prio_change()
262 		atomic_dec(&global->prios[*local]);  in v4l2_prio_change()
268 void v4l2_prio_open(struct v4l2_prio_state *global, enum v4l2_priority *local)  in v4l2_prio_open()  argument
270 	v4l2_prio_change(global, local, V4L2_PRIORITY_DEFAULT);  in v4l2_prio_open()
274 void v4l2_prio_close(struct v4l2_prio_state *global, enum v4l2_priority local)  in v4l2_prio_close()  argument
277 		atomic_dec(&global->prios[local]);  in v4l2_prio_close()
281 enum v4l2_priority v4l2_prio_max(struct v4l2_prio_state *global)  in v4l2_prio_max()  argument
283 	if (atomic_read(&global->prios[V4L2_PRIORITY_RECORD]) > 0)  in v4l2_prio_max()
285 	if (atomic_read(&global->prios[V4L2_PRIORITY_INTERACTIVE]) > 0)  in v4l2_prio_max()
287 	if (atomic_read(&global->prios[V4L2_PRIORITY_BACKGROUND]) > 0)  in v4l2_prio_max()
293 int v4l2_prio_check(struct v4l2_prio_state *global, enum v4l2_priority local)  in v4l2_prio_check()  argument
295 	return (local < v4l2_prio_max(global)) ? -EBUSY : 0;  in v4l2_prio_check()