Fix USB usage in tool/

ChangeLog

@@ -1,5 +1,11 @@
 2016-06-01  Niibe Yutaka  <gniibe@fsij.org>
 
+	* tool/stlinkv2.py (stlinkv2.__init__): Don't
+	call setConfiguration.
+
+	* tool/gnuk_token.py (gnuk_token, regnual): Don't
+	call setAltInterface, it's not needed.
+
 	* src/usb-ccid.c (ccid_notify_slot_change): New.
 	(ccid_thread): Call ccid_notify_slot_change at
 	interface_reset and EV_CARD_CHANGE.

tool/gnuk_token.py

@@ -68,7 +68,6 @@ class gnuk_token(object):
             raise ValueError("Wrong interface sub class")
         self.__devhandle = device.open()
         self.__devhandle.claimInterface(interface)
-        self.__devhandle.setAltInterface(0)
 
         self.__intf = interface.interfaceNumber
         self.__alt = interface.alternateSetting
@@ -473,7 +472,6 @@ class regnual(object):
             raise ValueError("Wrong interface class")
         self.__devhandle = dev.open()
         self.__devhandle.claimInterface(intf)
-        self.__devhandle.setAltInterface(0)
 
     def mem_info(self):
         mem = self.__devhandle.controlMsg(requestType = 0xc0, request = 0,

tool/stlinkv2.py

@@ -146,15 +146,7 @@ class stlinkv2(object):
         if intf.interfaceClass != 0xff: # Vendor specific
             raise ValueError("Wrong interface class.", intf.interfaceClass)
         self.__devhandle = dev.open()
-        # ST-Link/V2-1 has other interfaces
-        # Some other processes or kernel would use it
-        # So, write access to configuration causes error
-        try:
-            self.__devhandle.setConfiguration(conf.value)
-        except:
-            pass
         self.__devhandle.claimInterface(intf.interfaceNumber)
-        # self.__devhandle.setAltInterface(0)  # This was not good for libusb-win32 with wrong arg intf, new correct value 0 would be OK
 
     def shutdown(self):
         self.__devhandle.releaseInterface()