From: Jean THOMAS <git0@pub.jeanthomas.me>
Date: Wed, 24 Jun 2020 08:34:39 +0000 (+0200)
Subject: Ensure we have at least one master
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=33f0c9ae9bf23080051ea491ed16743fb2e526e6;p=gram.git

Ensure we have at least one master
---

diff --git a/gram/core/crossbar.py b/gram/core/crossbar.py
index 70d2afb..66301a3 100644
--- a/gram/core/crossbar.py
+++ b/gram/core/crossbar.py
@@ -133,6 +133,7 @@ class gramCrossbar(Elaboratable):
 
         controller = self.controller
         nmasters = len(self.masters)
+        assert nmasters > 0
 
         # Address mapping --------------------------------------------------------------------------
         cba_shifts = {