From 1877fd4ee9b5208ad20f65dbb3f6487a5e08a9b5 Mon Sep 17 00:00:00 2001
From: Pavol Rusnak <pavol@rusnak.io>
Date: Wed, 25 Sep 2019 17:35:14 +0000
Subject: [PATCH] core: handle removal of non-existing PIN in
 require_confirm_change_pin

(cherry picked from commit 40c66e6d856c69696b711932d3e6f8ec494f9a32)
---
 core/src/apps/management/change_pin.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/core/src/apps/management/change_pin.py b/core/src/apps/management/change_pin.py
index a5947b6cb0..6f482342b5 100644
--- a/core/src/apps/management/change_pin.py
+++ b/core/src/apps/management/change_pin.py
@@ -58,3 +58,6 @@ def require_confirm_change_pin(ctx: wire.Context, msg: ChangePin) -> None:
         text.normal("Do you really want to")
         text.bold("enable PIN protection?")
         return require_confirm(ctx, text)
+
+    # removing non-existing PIN
+    raise wire.ProcessError("PIN protection already disabled")