From c93263906307f208f47cb5885ed091e9e1d617c4 Mon Sep 17 00:00:00 2001
From: Dave Hylands <dhylands@gmail.com>
Date: Fri, 28 Dec 2018 12:17:40 -0800
Subject: [PATCH] tools/pydfu.py: Fix regression so tool runs under Python 2
 again.

Under python3 (tested with 3.6.7) bytes with a list of integers as an
argument returns a different result than under python 2.7 (tested with
2.7.15rc1) which causes pydfu.py to fail when run under 2.7.  Changing
bytes to bytearray makes pydfu work properly under both Python 2.7 and
Python 3.6.
---
 tools/pydfu.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/pydfu.py b/tools/pydfu.py
index 394ecca5e1..658ce59ae6 100755
--- a/tools/pydfu.py
+++ b/tools/pydfu.py
@@ -85,7 +85,7 @@ def find_dfu_cfg_descr(descr):
         nt = collections.namedtuple('CfgDescr',
             ['bLength', 'bDescriptorType', 'bmAttributes',
             'wDetachTimeOut', 'wTransferSize', 'bcdDFUVersion'])
-        return nt(*struct.unpack('<BBBHHH', bytes(descr)))
+        return nt(*struct.unpack('<BBBHHH', bytearray(descr)))
     return None