fix: Normalize ASR MRoPE metadata for runtime

tensorrt_edgellm/checkpoint/checkpoint_utils.py

@@ -61,7 +61,7 @@ def normalize_rope_scaling_for_runtime(rope_scaling: Any) -> Any:
     normalized = dict(rope_scaling)
     if "mrope_section" in normalized:
         rope_type = normalized.get("type") or normalized.get("rope_type")
-        if rope_type in (None, "default", "mrope"):
+        if rope_type in (None, "default", "linear", "mrope"):
             normalized["type"] = "default"
             normalized["rope_type"] = "default"
     # rope_parameters (transformers v5) carries "rope_type" without "type";

tests/python-unittests/test_checkpoint_utils.py

@@ -37,8 +37,8 @@
     sys.path.insert(0, _REPO_ROOT)
 
 try:
-    from tensorrt_edgellm.checkpoint.checkpoint_utils import \
-        load_checkpoint_config_dicts
+    from tensorrt_edgellm.checkpoint.checkpoint_utils import (
+        load_checkpoint_config_dicts, normalize_rope_scaling_for_runtime)
 except ImportError as exc:  # pragma: no cover
     pytest.skip(f"tensorrt_edgellm not importable: {exc}",
                 allow_module_level=True)
@@ -95,6 +95,39 @@ def _assert_kmrope(rope_scaling):
         f"for kMRope; got {rope_type!r}")
 
 
+def test_linear_rope_with_mrope_section_is_normalized_for_runtime():
+    """Qwen3-ASR uses linear scaling metadata for an MRoPE configuration."""
+    source = {
+        "factor": 1.0,
+        "mrope_section": [24, 20, 20],
+        "rope_type": "linear",
+    }
+
+    normalized = normalize_rope_scaling_for_runtime(source)
+
+    assert normalized == {
+        "factor": 1.0,
+        "mrope_section": [24, 20, 20],
+        "rope_type": "default",
+        "type": "default",
+    }
+    assert source["rope_type"] == "linear"
+
+
+def test_linear_rope_without_mrope_section_keeps_linear_semantics():
+    """Ordinary linear RoPE must not be classified as MRoPE."""
+    normalized = normalize_rope_scaling_for_runtime({
+        "factor": 2.0,
+        "rope_type": "linear",
+    })
+
+    assert normalized == {
+        "factor": 2.0,
+        "rope_type": "linear",
+        "type": "linear",
+    }
+
+
 def test_qwen3_vl_transformers_v5_recovers_rope_from_text_config_rope_parameters(
 ):
     """The bug that caused MR !761 VLM CI failures: transformers-v5 puts the