drm/amdgpu: remove prepare_job callback

Not used any more.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>

drivers/gpu/drm/amd/scheduler/gpu_scheduler.c

@@ -300,12 +300,8 @@ static int amd_sched_main(void *param)
 		r = kfifo_out(&c_entity->job_queue, &job, sizeof(void *));
 		if (r != sizeof(void *))
 			continue;
-		r = 0;
-		if (sched->ops->prepare_job)
-			r = sched->ops->prepare_job(sched, c_entity, job);
-		if (!r) {
 		atomic_inc(&sched->hw_rq_count);
-		}
+
 		mutex_lock(&sched->sched_lock);
 		fence = sched->ops->run_job(sched, c_entity, job);
 		if (fence) {

drivers/gpu/drm/amd/scheduler/gpu_scheduler.h

@@ -93,9 +93,6 @@ static inline struct amd_sched_fence *to_amd_sched_fence(struct fence *f)
  * these functions should be implemented in driver side
 */
 struct amd_sched_backend_ops {
-	int (*prepare_job)(struct amd_gpu_scheduler *sched,
-			   struct amd_sched_entity *c_entity,
-			   struct amd_sched_job *job);
 	struct fence *(*run_job)(struct amd_gpu_scheduler *sched,
 				 struct amd_sched_entity *c_entity,
 				 struct amd_sched_job *job);