drm: revert "expand replace_fence to support timeline point v2"

This reverts commit 9a09a42369a4a37a959c051d8e1a1f948c1529a4.

The whole interface isn't thought through. Since this function can't
fail we actually can't allocate an object to store the sync point.

Sorry, I should have taken the lead on this from the very beginning and
reviewed it more thoughtfully. Going to propose a new interface as a
follow up change.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Link: https://patchwork.freedesktop.org/patch/265580/

5 files changed, 10 insertions, 13 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
index 024dfbd87f11..dc54e9efd910 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
@@ -1193,7 +1193,7 @@ static void amdgpu_cs_post_dependencies(struct amdgpu_cs_parser *p)
 	int i;
 
 	for (i = 0; i < p->num_post_dep_syncobjs; ++i)
-		drm_syncobj_replace_fence(p->post_dep_syncobjs[i], 0, p->fence);
+		drm_syncobj_replace_fence(p->post_dep_syncobjs[i], p->fence);
 }
 
 static int amdgpu_cs_submit(struct amdgpu_cs_parser *p,
diff --git a/drivers/gpu/drm/drm_syncobj.c b/drivers/gpu/drm/drm_syncobj.c
index 5c5ba1f14307..db30a0e89db8 100644
--- a/drivers/gpu/drm/drm_syncobj.c
+++ b/drivers/gpu/drm/drm_syncobj.c
@@ -140,13 +140,11 @@ void drm_syncobj_remove_callback(struct drm_syncobj *syncobj,
 /**
  * drm_syncobj_replace_fence - replace fence in a sync object.
  * @syncobj: Sync object to replace fence in
- * @point: timeline point
  * @fence: fence to install in sync file.
  *
- * This replaces the fence on a sync object, or a timeline point fence.
+ * This replaces the fence on a sync object.
  */
 void drm_syncobj_replace_fence(struct drm_syncobj *syncobj,
-			       u64 point,
 			       struct dma_fence *fence)
 {
 	struct dma_fence *old_fence;
@@ -184,7 +182,7 @@ static void drm_syncobj_assign_null_handle(struct drm_syncobj *syncobj)
 {
 	struct dma_fence *fence = dma_fence_get_stub();
 
-	drm_syncobj_replace_fence(syncobj, 0, fence);
+	drm_syncobj_replace_fence(syncobj, fence);
 	dma_fence_put(fence);
 }
 
@@ -233,7 +231,7 @@ void drm_syncobj_free(struct kref *kref)
 	struct drm_syncobj *syncobj = container_of(kref,
 						   struct drm_syncobj,
 						   refcount);
-	drm_syncobj_replace_fence(syncobj, 0, NULL);
+	drm_syncobj_replace_fence(syncobj, NULL);
 	kfree(syncobj);
 }
 EXPORT_SYMBOL(drm_syncobj_free);
@@ -267,7 +265,7 @@ int drm_syncobj_create(struct drm_syncobj **out_syncobj, uint32_t flags,
 		drm_syncobj_assign_null_handle(syncobj);
 
 	if (fence)
-		drm_syncobj_replace_fence(syncobj, 0, fence);
+		drm_syncobj_replace_fence(syncobj, fence);
 
 	*out_syncobj = syncobj;
 	return 0;
@@ -452,7 +450,7 @@ static int drm_syncobj_import_sync_file_fence(struct drm_file *file_private,
 		return -ENOENT;
 	}
 
-	drm_syncobj_replace_fence(syncobj, 0, fence);
+	drm_syncobj_replace_fence(syncobj, fence);
 	dma_fence_put(fence);
 	drm_syncobj_put(syncobj);
 	return 0;
@@ -923,7 +921,7 @@ drm_syncobj_reset_ioctl(struct drm_device *dev, void *data,
 		return ret;
 
 	for (i = 0; i < args->count_handles; i++)
-		drm_syncobj_replace_fence(syncobjs[i], 0, NULL);
+		drm_syncobj_replace_fence(syncobjs[i], NULL);
 
 	drm_syncobj_array_free(syncobjs, args->count_handles);
 
diff --git a/drivers/gpu/drm/i915/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
index d4fac09095f8..10a4afb4f235 100644
--- a/drivers/gpu/drm/i915/i915_gem_execbuffer.c
+++ b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
@@ -2191,7 +2191,7 @@ signal_fence_array(struct i915_execbuffer *eb,
 		if (!(flags & I915_EXEC_FENCE_SIGNAL))
 			continue;
 
-		drm_syncobj_replace_fence(syncobj, 0, fence);
+		drm_syncobj_replace_fence(syncobj, fence);
 	}
 }
 
diff --git a/drivers/gpu/drm/v3d/v3d_gem.c b/drivers/gpu/drm/v3d/v3d_gem.c
index f565b197cba9..cb99e53f7607 100644
--- a/drivers/gpu/drm/v3d/v3d_gem.c
+++ b/drivers/gpu/drm/v3d/v3d_gem.c
@@ -609,8 +609,7 @@ v3d_submit_cl_ioctl(struct drm_device *dev, void *data,
 	/* Update the return sync object for the */
 	sync_out = drm_syncobj_find(file_priv, args->out_sync);
 	if (sync_out) {
-		drm_syncobj_replace_fence(sync_out, 0,
-					  exec->render_done_fence);
+		drm_syncobj_replace_fence(sync_out, exec->render_done_fence);
 		drm_syncobj_put(sync_out);
 	}
 
diff --git a/drivers/gpu/drm/vc4/vc4_gem.c b/drivers/gpu/drm/vc4/vc4_gem.c
index 41881ce4132d..aea2b8dfec17 100644
--- a/drivers/gpu/drm/vc4/vc4_gem.c
+++ b/drivers/gpu/drm/vc4/vc4_gem.c
@@ -681,7 +681,7 @@ vc4_queue_submit(struct drm_device *dev, struct vc4_exec_info *exec,
 	exec->fence = &fence->base;
 
 	if (out_sync)
-		drm_syncobj_replace_fence(out_sync, 0, exec->fence);
+		drm_syncobj_replace_fence(out_sync, exec->fence);
 
 	vc4_update_bo_seqnos(exec, seqno);