From c94a99f7cf4eaaa9c065aba2d88f8c2aff854ad6 Mon Sep 17 00:00:00 2001
From: zhangcaiji <zhangcaiji123@163.com>
Date: Mon, 24 Nov 2025 09:38:50 +0000
Subject: [PATCH] Fix the error in MoeExpertFFN operator when valid_token_num=0

---
 custom_ops/xpu_ops/src/ops/moe_expert_ffn.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/custom_ops/xpu_ops/src/ops/moe_expert_ffn.cc b/custom_ops/xpu_ops/src/ops/moe_expert_ffn.cc
index 860fd850348..45868821440 100644
--- a/custom_ops/xpu_ops/src/ops/moe_expert_ffn.cc
+++ b/custom_ops/xpu_ops/src/ops/moe_expert_ffn.cc
@@ -441,7 +441,7 @@ std::vector<paddle::Tensor> MoeExpertFFN(
     const std::string& quant_method,
     const int hadamard_blocksize,
     const int valid_token_num) {
-  if (ffn_in.numel() == 0) {
+  if (ffn_in.numel() == 0 || valid_token_num == 0) {
     paddle::Tensor ffn2_out =
         paddle::empty_like(ffn_in, paddle::DataType::BFLOAT16);
     return {ffn2_out};