From ea3bc5b4ca9193d7fd0debd58017b6e81f3899f7 Mon Sep 17 00:00:00 2001
From: zccjjj <62829461+zccjjj@users.noreply.github.com>
Date: Tue, 25 Nov 2025 10:07:20 +0800
Subject: [PATCH] [XPU] Fix the error in MoeExpertFFN operator when
 valid_token_num=0 (#5196)

---
 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 860fd8503..458688214 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};