+static void
+nouveau_fence_del_unsignalled(struct nouveau_fence *fence)
+{
+ struct nouveau_channel_priv *nvchan = nouveau_channel(fence->channel);
+ struct nouveau_fence *le;
+
+ if (nvchan->fence_head == fence) {
+ nvchan->fence_head = nouveau_fence(fence)->next;
+ if (nvchan->fence_head == NULL)
+ nvchan->fence_tail = NULL;
+ return;
+ }
+
+ le = nvchan->fence_head;
+ while (le && nouveau_fence(le)->next != fence)
+ le = nouveau_fence(le)->next;
+ assert(le && nouveau_fence(le)->next == fence);
+ nouveau_fence(le)->next = nouveau_fence(fence)->next;
+ if (nvchan->fence_tail == fence)
+ nvchan->fence_tail = le;
+}
+
+static void
+nouveau_fence_del(struct nouveau_fence **fence)
+{
+ struct nouveau_fence_priv *nvfence;
+
+ if (!fence || !*fence)
+ return;
+ nvfence = nouveau_fence(*fence);
+ *fence = NULL;
+
+ if (--nvfence->refcount)
+ return;
+
+ if (nvfence->emitted && !nvfence->signalled) {
+ if (nvfence->signal_cb) {
+ nvfence->refcount++;
+ nouveau_fence_wait((void *)&nvfence);
+ return;
+ }
+
+ nouveau_fence_del_unsignalled(&nvfence->base);
+ }
+ free(nvfence);
+}
+