trezor: provide a default interface number.

9 years ago · 828320c1af
1 changed files with 3 additions and 1 deletions
--- a/lib/plugins.py
+++ b/lib/plugins.py
@ -455,7 +455,9 @@ class DeviceMgr(PrintError):
        for d in hid.enumerate(0, 0):
            product_key = (d['vendor_id'], d['product_id'])
            if product_key in self.recognised_hardware:
-                devices.append(Device(d['path'], d['interface_number'],
+                # Older versions of hid don't provide interface_number
+                interface_number = d.get('interface_number', 0)
+                devices.append(Device(d['path'], interface_number,
                                      d['serial_number'], product_key))

        # Now find out what was disconnected