From 4b2c70bd824afda85081713317b0499c0c9972e4 Mon Sep 17 00:00:00 2001
From: Your Name <you@example.com>
Date: Fri, 20 Aug 2021 11:54:39 +0200
Subject: [PATCH] make sure $u_pass is initialized

---
 tools/test_modules/m25400.pm | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/tools/test_modules/m25400.pm b/tools/test_modules/m25400.pm
index a2d6206da..06ed93ab1 100644
--- a/tools/test_modules/m25400.pm
+++ b/tools/test_modules/m25400.pm
@@ -155,6 +155,11 @@ sub module_generate_hash
     $enc = ($R == 3) ? 1 : random_number (0, 1);
   }
 
+  if (!defined $u_pass)
+  {
+    $u_pass="";
+  }
+
   my $padding;
 
   for (my $i = 0; $i < 32; $i++)