drm/ttm: remove no_gpu_wait param from ttm_bo_move_accel_cleanup

It isn't used and not waiting for the GPU after scheduling a move is
actually quite dangerous.

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

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

@@ -287,8 +287,7 @@ static int amdgpu_move_blit(struct ttm_buffer_object *bo,
 			       new_mem->num_pages * PAGE_SIZE, /* bytes */
 			       bo->resv, &fence);
 	/* FIXME: handle copy error */
-	r = ttm_bo_move_accel_cleanup(bo, fence,
-				      evict, no_wait_gpu, new_mem);
+	r = ttm_bo_move_accel_cleanup(bo, fence, evict, new_mem);
 	fence_put(fence);
 	return r;
 }

drivers/gpu/drm/nouveau/nouveau_bo.c

@@ -1082,7 +1082,6 @@ nouveau_bo_move_m2mf(struct ttm_buffer_object *bo, int evict, bool intr,
 				ret = ttm_bo_move_accel_cleanup(bo,
 								&fence->base,
 								evict,
-								no_wait_gpu,
 								new_mem);
 				nouveau_fence_unref(&fence);
 			}

drivers/gpu/drm/radeon/radeon_ttm.c

@@ -300,8 +300,7 @@ static int radeon_move_blit(struct ttm_buffer_object *bo,
 	if (IS_ERR(fence))
 		return PTR_ERR(fence);
 
-	r = ttm_bo_move_accel_cleanup(bo, &fence->base,
-				      evict, no_wait_gpu, new_mem);
+	r = ttm_bo_move_accel_cleanup(bo, &fence->base, evict, new_mem);
 	radeon_fence_unref(&fence);
 	return r;
 }

drivers/gpu/drm/ttm/ttm_bo_util.c

@@ -637,7 +637,6 @@ EXPORT_SYMBOL(ttm_bo_kunmap);
 int ttm_bo_move_accel_cleanup(struct ttm_buffer_object *bo,
 			      struct fence *fence,
 			      bool evict,
-			      bool no_wait_gpu,
 			      struct ttm_mem_reg *new_mem)
 {
 	struct ttm_bo_device *bdev = bo->bdev;

include/drm/ttm/ttm_bo_driver.h

@@ -1004,7 +1004,6 @@ extern void ttm_bo_free_old_node(struct ttm_buffer_object *bo);
  * @bo: A pointer to a struct ttm_buffer_object.
  * @fence: A fence object that signals when moving is complete.
  * @evict: This is an evict move. Don't return until the buffer is idle.
- * @no_wait_gpu: Return immediately if the GPU is busy.
  * @new_mem: struct ttm_mem_reg indicating where to move.
  *
  * Accelerated move function to be called when an accelerated move
@@ -1016,8 +1015,7 @@ extern void ttm_bo_free_old_node(struct ttm_buffer_object *bo);
  */
 
 extern int ttm_bo_move_accel_cleanup(struct ttm_buffer_object *bo,
-				     struct fence *fence,
-				     bool evict, bool no_wait_gpu,
+				     struct fence *fence, bool evict,
 				     struct ttm_mem_reg *new_mem);
 /**
  * ttm_io_prot