aprinter test_latency fix

test_latency.patch

diff --git a/host_stuff/test_latency.py b/host_stuff/test_latency.py
index d1c3645..55e8054 100755
--- a/host_stuff/test_latency.py
+++ b/host_stuff/test_latency.py
@@ -4,6 +4,7 @@ from __future__ import print_function
 import sys
 import argparse
 import time
+import re
 import littlevent.close
 import littlevent.error
 import littlevent.loop
@@ -52,13 +53,14 @@ class Program (littlevent.close.Obj):
         if self.writing:
             print('ERROR: early response')
             return self._quit()
-        if data != 'ok\n':
-            print('ERROR: unexpected response: >{}<'.format(data))
-            return self._quit()
-        self.done_count += 1
-        if self.done_count >= self.want_count:
-            return self._finished()
-        self._write()
+        if re.search('^ok', data, re.M):
+            self.done_count += 1
+            if self.done_count >= self.want_count:
+                return self._finished()
+            self._write()
+            return
+        print('WARN: unexpected response: >{}<'.format(data))
+        return

     def _write_handler (self, err):
         assert self.writing