From 1d3fa77ab6418abbdfa2caa479265f4c73adad80 Mon Sep 17 00:00:00 2001
From: matejcik <ja@matejcik.cz>
Date: Wed, 3 Oct 2018 14:00:24 +0200
Subject: [PATCH] debuglink: allow with-block without expected_responses

---
 trezorlib/debuglink.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/trezorlib/debuglink.py b/trezorlib/debuglink.py
index 35756b30c0..0b32625841 100644
--- a/trezorlib/debuglink.py
+++ b/trezorlib/debuglink.py
@@ -214,6 +214,10 @@ class TrezorClientDebugLink(TrezorClient):
             # Another exception raised
             return False
 
+        if self.expected_responses is None:
+            # no need to check anything else
+            return False
+
         # return isinstance(value, TypeError)
         # Evaluate missed responses in 'with' statement
         if self.current_response < len(self.expected_responses):