Dispatcher: Fix a mutex issue for method auto serialization

This patch fixes an issue with AcpiDsAutoSerializedMethod().
The parser will invoke AcpiExReleaseAllMutexes(), which in return
cause mutexes held in ACPI_ERROR_METHOD() failed. Lv Zheng.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>

Author: Lv Zheng

source/components/dispatcher/dsmethod.c

@@ -179,12 +179,15 @@ AcpiDsAutoSerializeMethod (
         "Method auto-serialization parse [%4.4s] %p\n",
         AcpiUtGetNodeName (Node), Node));
 
+    AcpiExEnterInterpreter ();
+
     /* Create/Init a root op for the method parse tree */
 
     Op = AcpiPsAllocOp (AML_METHOD_OP, ObjDesc->Method.AmlStart);
     if (!Op)
     {
-        return_ACPI_STATUS (AE_NO_MEMORY);
+        Status = AE_NO_MEMORY;
+        goto Unlock;
     }
 
     AcpiPsSetName (Op, Node->Name.Integer);
@@ -196,7 +199,8 @@ AcpiDsAutoSerializeMethod (
     if (!WalkState)
     {
         AcpiPsFreeOp (Op);
-        return_ACPI_STATUS (AE_NO_MEMORY);
+        Status = AE_NO_MEMORY;
+        goto Unlock;
     }
 
     Status = AcpiDsInitAmlWalk (WalkState, Op, Node,
@@ -215,6 +219,8 @@ AcpiDsAutoSerializeMethod (
     Status = AcpiPsParseAml (WalkState);
 
     AcpiPsDeleteParseTree (Op);
+Unlock:
+    AcpiExExitInterpreter ();
     return_ACPI_STATUS (Status);
 }
 

source/components/parser/psparse.c

@@ -627,8 +627,10 @@ AcpiPsParseAml (
         {
             /* Either the method parse or actual execution failed */
 
+            AcpiExExitInterpreter ();
             ACPI_ERROR_METHOD ("Method parse/execution failed",
                 WalkState->MethodNode, NULL, Status);
+            AcpiExEnterInterpreter ();
 
             /* Check for possible multi-thread reentrancy problem */