From db68dcbc14bce870bdb8f632f494375dae871964 Mon Sep 17 00:00:00 2001
From: BTChip <contact@btchip.com>
Date: Sat, 13 Jun 2015 11:58:57 +0200
Subject: [PATCH] Get rid of libusb dependency

---
 plugins/btchipwallet.py | 16 ++--------------
 1 file changed, 2 insertions(+), 14 deletions(-)

diff --git a/plugins/btchipwallet.py b/plugins/btchipwallet.py
index e1aec9dc6..22b2d6cef 100644
--- a/plugins/btchipwallet.py
+++ b/plugins/btchipwallet.py
@@ -20,7 +20,6 @@ from electrum.util import format_satoshis
 import hashlib
 
 try:
-    from usb.core import USBError
     from btchip.btchipComm import getDongle, DongleWait
     from btchip.btchip import btchip
     from btchip.btchipUtils import compress_public_key,format_transaction, get_regular_input_script
@@ -502,16 +501,5 @@ if BTCHIP:
             self.dongle = dongle
 
         def waitFirstResponse(self, timeout):
-            customTimeout = 0
-            while customTimeout < timeout:
-                try:
-                    response = self.dongle.waitFirstResponse(200)
-                    return response
-                except USBError, e:
-                    if e.backend_error_code == -7:
-                        QApplication.processEvents()
-                        customTimeout = customTimeout + 100
-                        pass
-                    else:
-                        raise e
-            raise e
+	    return self.dongle.waitFirstResponse(timeout)
+