From 8535bcf27be19ea45de4d28e50edabc00ce57f57 Mon Sep 17 00:00:00 2001
From: Alex Bee <knaerzche@gmail.com>
Date: Mon, 18 Jan 2021 00:32:09 +0100
Subject: [PATCH] rockchip: disallow upgrades from legacy kernels

---
 projects/Rockchip/bootloader/canupdate.sh | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/projects/Rockchip/bootloader/canupdate.sh b/projects/Rockchip/bootloader/canupdate.sh
index b9b32ca914..908179b820 100644
--- a/projects/Rockchip/bootloader/canupdate.sh
+++ b/projects/Rockchip/bootloader/canupdate.sh
@@ -1,6 +1,15 @@
 # SPDX-License-Identifier: GPL-2.0
 # Copyright (C) 2017-present Team LibreELEC (https://libreelec.tv)
 
+# detect legacy kernel installs and abort to prevent upgrades
+case $(uname -r) in
+  4.4*)
+    echo "Updates from legacy kernels are not supported!"
+    sleep 10
+    exit 1
+    ;;
+esac
+
 # Allow upgrades between arm and aarch64
 if [ "$1" = "@PROJECT@.arm" -o "$1" = "@PROJECT@.aarch64" ]; then
   exit 0