drm: expand drm_syncobj_find_fence to support timeline point v2

we can fetch timeline point fence after expanded.
v2: The parameter fence is the result of the function and should come last.
Signed-off-by: Chunming Zhou <david1.zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/246541/

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

@@ -1102,7 +1102,7 @@ static int amdgpu_syncobj_lookup_and_add_to_sync(struct amdgpu_cs_parser *p,
 {
 	int r;
 	struct dma_fence *fence;
-	r = drm_syncobj_find_fence(p->filp, handle, &fence);
+	r = drm_syncobj_find_fence(p->filp, handle, 0, &fence);
 	if (r)
 		return r;
 

drivers/gpu/drm/drm_syncobj.c

@@ -222,6 +222,7 @@ static int drm_syncobj_assign_null_handle(struct drm_syncobj *syncobj)
  * drm_syncobj_find_fence - lookup and reference the fence in a sync object
  * @file_private: drm file private pointer
  * @handle: sync object handle to lookup.
+ * @point: timeline point
  * @fence: out parameter for the fence
  *
  * This is just a convenience function that combines drm_syncobj_find() and
@@ -232,7 +233,7 @@ static int drm_syncobj_assign_null_handle(struct drm_syncobj *syncobj)
  * dma_fence_put().
  */
 int drm_syncobj_find_fence(struct drm_file *file_private,
-			   u32 handle,
+			   u32 handle, u64 point,
 			   struct dma_fence **fence)
 {
 	struct drm_syncobj *syncobj = drm_syncobj_find(file_private, handle);
@@ -503,7 +504,7 @@ static int drm_syncobj_export_sync_file(struct drm_file *file_private,
 	if (fd < 0)
 		return fd;
 
-	ret = drm_syncobj_find_fence(file_private, handle, &fence);
+	ret = drm_syncobj_find_fence(file_private, handle, 0, &fence);
 	if (ret)
 		goto err_put_fd;
 

drivers/gpu/drm/v3d/v3d_gem.c

@@ -521,12 +521,12 @@ v3d_submit_cl_ioctl(struct drm_device *dev, void *data,
 	kref_init(&exec->refcount);
 
 	ret = drm_syncobj_find_fence(file_priv, args->in_sync_bcl,
-				     &exec->bin.in_fence);
+				     0, &exec->bin.in_fence);
 	if (ret == -EINVAL)
 		goto fail;
 
 	ret = drm_syncobj_find_fence(file_priv, args->in_sync_rcl,
-				     &exec->render.in_fence);
+				     0, &exec->render.in_fence);
 	if (ret == -EINVAL)
 		goto fail;
 

drivers/gpu/drm/vc4/vc4_gem.c

@@ -1173,7 +1173,7 @@ vc4_submit_cl_ioctl(struct drm_device *dev, void *data,
 
 	if (args->in_sync) {
 		ret = drm_syncobj_find_fence(file_priv, args->in_sync,
-					     &in_fence);
+					     0, &in_fence);
 		if (ret)
 			goto fail;
 

include/drm/drm_syncobj.h

@@ -134,7 +134,7 @@ struct drm_syncobj *drm_syncobj_find(struct drm_file *file_private,
 void drm_syncobj_replace_fence(struct drm_syncobj *syncobj,
 			       struct dma_fence *fence);
 int drm_syncobj_find_fence(struct drm_file *file_private,
-			   u32 handle,
+			   u32 handle, u64 point,
 			   struct dma_fence **fence);
 void drm_syncobj_free(struct kref *kref);
 int drm_syncobj_create(struct drm_syncobj **out_syncobj, uint32_t flags,