drm/amd/scheduler: Mark amdgpu_sched_ops const

This marks the struct amdgpu_sched_ops const and
adjusts amd_sched_init to take a const pointer
for the ops param. The ops member of
struct amd_gpu_scheduler is also changed to const.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Nils Wallménius <nils.wallmenius@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu.h

@@ -748,7 +748,7 @@ enum amdgpu_ring_type {
 	AMDGPU_RING_TYPE_VCE
 };
 
-extern struct amd_sched_backend_ops amdgpu_sched_ops;
+extern const struct amd_sched_backend_ops amdgpu_sched_ops;
 
 int amdgpu_job_alloc(struct amdgpu_device *adev, unsigned num_ibs,
 		     struct amdgpu_job **job);

drivers/gpu/drm/amd/amdgpu/amdgpu_job.c

@@ -198,7 +198,7 @@ err:
 	return fence;
 }
 
-struct amd_sched_backend_ops amdgpu_sched_ops = {
+const struct amd_sched_backend_ops amdgpu_sched_ops = {
 	.dependency = amdgpu_job_dependency,
 	.run_job = amdgpu_job_run,
 	.begin_job = amd_sched_job_begin,

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

@@ -530,7 +530,7 @@ static int amd_sched_main(void *param)
  * Return 0 on success, otherwise error code.
 */
 int amd_sched_init(struct amd_gpu_scheduler *sched,
-		   struct amd_sched_backend_ops *ops,
+		   const struct amd_sched_backend_ops *ops,
 		   unsigned hw_submission, long timeout, const char *name)
 {
 	int i;

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

@@ -123,7 +123,7 @@ enum amd_sched_priority {
  * One scheduler is implemented for each hardware ring
 */
 struct amd_gpu_scheduler {
-	struct amd_sched_backend_ops	*ops;
+	const struct amd_sched_backend_ops	*ops;
 	uint32_t			hw_submission_limit;
 	long				timeout;
 	const char			*name;
@@ -137,7 +137,7 @@ struct amd_gpu_scheduler {
 };
 
 int amd_sched_init(struct amd_gpu_scheduler *sched,
-		   struct amd_sched_backend_ops *ops,
+		   const struct amd_sched_backend_ops *ops,
 		   uint32_t hw_submission, long timeout, const char *name);
 void amd_sched_fini(struct amd_gpu_scheduler *sched);