+static void
+nouveau_fence_work_handler(struct work_struct *kwork)
+{
+ struct fence_work *work = container_of(kwork, typeof(*work), base);
+ work->func(work->data);
+ kfree(work);
+}
+
+void
+nouveau_fence_work(struct nouveau_fence *fence,
+ void (*func)(void *), void *data)
+{
+ struct nouveau_channel *chan = fence->channel;
+ struct nouveau_fence_chan *fctx;
+ struct fence_work *work = NULL;
+
+ if (nouveau_fence_done(fence)) {
+ func(data);
+ return;
+ }
+
+ fctx = chan->fence;
+ work = kmalloc(sizeof(*work), GFP_KERNEL);
+ if (!work) {
+ WARN_ON(nouveau_fence_wait(fence, false, false));
+ func(data);
+ return;
+ }
+
+ spin_lock(&fctx->lock);
+ if (!fence->channel) {
+ spin_unlock(&fctx->lock);
+ kfree(work);
+ func(data);
+ return;
+ }
+
+ INIT_WORK(&work->base, nouveau_fence_work_handler);
+ work->func = func;
+ work->data = data;
+ list_add(&work->head, &fence->work);
+ spin_unlock(&fctx->lock);
+}
+