From 430418e2182606b5296b26c912df8f12ec9b380f Mon Sep 17 00:00:00 2001
From: khalilzhk <khalilzhk@gmail.com>
Date: Fri, 3 Jul 2026 16:41:39 +0800
Subject: [PATCH] [NPU] bugfix for dsv4 memory pool (#30001)

---
 .../srt/hardware_backend/npu/dsv4/dsv4_memory_pool.py    | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/python/sglang/srt/hardware_backend/npu/dsv4/dsv4_memory_pool.py b/python/sglang/srt/hardware_backend/npu/dsv4/dsv4_memory_pool.py
index f9e016156..a83771893 100644
--- a/python/sglang/srt/hardware_backend/npu/dsv4/dsv4_memory_pool.py
+++ b/python/sglang/srt/hardware_backend/npu/dsv4/dsv4_memory_pool.py
@@ -356,6 +356,15 @@ class DSV4NPUTokenToKVPool(DeepSeekV4TokenToKVPool):
             page_size=self.swa_page_size,
         )
 
+    def clear_unaccepted_c128_draft_states(
+        self,
+        req_pool_indices: torch.Tensor,
+        seq_lens: torch.Tensor,
+        accept_lens: torch.Tensor,
+        num_draft_tokens: int,
+    ) -> None:
+        pass
+
     def _make_indexer_pool(
         self,
         size: int,