drm/vmwgfx: remove vmw_wait_dma_fence

Decomposing fence containers don't seem to make any sense here.

So just remove the function entirely and call dma_fence_wait() directly.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Zack Rusin <zackr@vmware.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220124130328.2376-12-christian.koenig@amd.com

drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c

@@ -4500,7 +4500,7 @@ int vmw_execbuf_ioctl(struct drm_device *dev, void *data,
 			goto mksstats_out;
 		}
 
-		ret = vmw_wait_dma_fence(dev_priv->fman, in_fence);
+		ret = dma_fence_wait(in_fence, true);
 		if (ret)
 			goto out;
 	}

drivers/gpu/drm/vmwgfx/vmwgfx_fence.c

@@ -621,52 +621,6 @@ int vmw_user_fence_create(struct drm_file *file_priv,
 	return ret;
 }
 
-
-/**
- * vmw_wait_dma_fence - Wait for a dma fence
- *
- * @fman: pointer to a fence manager
- * @fence: DMA fence to wait on
- *
- * This function handles the case when the fence is actually a fence
- * array.  If that's the case, it'll wait on each of the child fence
- */
-int vmw_wait_dma_fence(struct vmw_fence_manager *fman,
-		       struct dma_fence *fence)
-{
-	struct dma_fence_array *fence_array;
-	int ret = 0;
-	int i;
-
-
-	if (dma_fence_is_signaled(fence))
-		return 0;
-
-	if (!dma_fence_is_array(fence))
-		return dma_fence_wait(fence, true);
-
-	/* From i915: Note that if the fence-array was created in
-	 * signal-on-any mode, we should *not* decompose it into its individual
-	 * fences. However, we don't currently store which mode the fence-array
-	 * is operating in. Fortunately, the only user of signal-on-any is
-	 * private to amdgpu and we should not see any incoming fence-array
-	 * from sync-file being in signal-on-any mode.
-	 */
-
-	fence_array = to_dma_fence_array(fence);
-	for (i = 0; i < fence_array->num_fences; i++) {
-		struct dma_fence *child = fence_array->fences[i];
-
-		ret = dma_fence_wait(child, true);
-
-		if (ret < 0)
-			return ret;
-	}
-
-	return 0;
-}
-
-
 /*
  * vmw_fence_fifo_down - signal all unsignaled fence objects.
  */

drivers/gpu/drm/vmwgfx/vmwgfx_fence.h

@@ -104,9 +104,6 @@ extern int vmw_user_fence_create(struct drm_file *file_priv,
 				 struct vmw_fence_obj **p_fence,
 				 uint32_t *p_handle);
 
-extern int vmw_wait_dma_fence(struct vmw_fence_manager *fman,
-			      struct dma_fence *fence);
-
 extern void vmw_fence_fifo_up(struct vmw_fence_manager *fman);
 
 extern void vmw_fence_fifo_down(struct vmw_fence_manager *fman);