schedule: remove scheduler_restore()

src/include/sof/schedule/schedule.h

@@ -150,15 +150,6 @@ struct scheduler_ops {
 	 */
 	void (*scheduler_free)(void *data, uint32_t flags);
 
-	/**
-	 * Restores scheduler's resources.
-	 * @param data Private data of selected scheduler.
-	 * @return 0 if succeeded, error code otherwise.
-	 *
-	 * This operation is optional.
-	 */
-	int (*scheduler_restore)(void *data);
-
 	/**
 	 * Initializes context
 	 * @param data Private data of selected scheduler.
@@ -371,24 +362,6 @@ static inline void schedule_free(uint32_t flags)
 	}
 }
 
-/** See scheduler_ops::scheduler_restore */
-static inline int schedulers_restore(void)
-{
-	struct schedulers *schedulers = *arch_schedulers_get();
-	struct schedule_data *sch;
-	struct list_item *slist;
-
-	assert(schedulers);
-
-	list_for_item(slist, &schedulers->list) {
-		sch = container_of(slist, struct schedule_data, list);
-		if (sch->ops->scheduler_restore)
-			return sch->ops->scheduler_restore(sch->data);
-	}
-
-	return 0;
-}
-
 /** See scheduler_ops::scheduler_init_context */
 static inline struct k_thread *scheduler_init_context(struct task *task)
 {

src/schedule/ll_schedule_xtos.c

@@ -808,6 +808,5 @@ static const struct scheduler_ops schedule_ll_ops = {
 	.schedule_task_cancel	= schedule_ll_task_cancel,
 	.reschedule_task	= reschedule_ll_task,
 	.scheduler_free		= scheduler_free_ll,
-	.scheduler_restore	= NULL,
 	.schedule_task_running	= NULL,
 };