From 7e0e808d099fa44c32797d7d5fce1ec41e46d9b5 Mon Sep 17 00:00:00 2001
From: Peter Cai <peter@typeblog.net>
Date: Thu, 2 Jan 2020 09:41:59 +0800
Subject: [PATCH] fix adf display devices on Spreadtrum devices for Android 10

* Somehow, when running GSI 10, Spreadtrum's adf driver do not show up
  with the correct name in /dev. I am not sure how this happens, but it
  seemed that a few `mknod`s fixed the problem. This was tested on
  Xiaomi Qin 2 Pro.
---
 rw-system.sh | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/rw-system.sh b/rw-system.sh
index 400ae86..ccfdd1c 100644
--- a/rw-system.sh
+++ b/rw-system.sh
@@ -517,3 +517,12 @@ if [ -f /odm/phone.prop ];then
         eval "$(awk 'BEGIN { a=0 }; /\[.*\].*/ { a=0 }; tolower($0) ~ /.*0x39606014.*/ { a=1 }; /.*=.*/ { if(a == 1) print $0 }' /odm/phone.prop |sed -nE 's/(.*)=(.*)/setprop \1 "\2";/p')"
     fi
 fi
+
+# Fix sprd adf for surfaceflinger to start
+# Somehow the names of the device nodes are incorrect on Android 10; fix them by mknod
+if [ -e /dev/sprd-adf-dev ];then
+    mknod -m666 /dev/adf0 c 250 0
+    mknod -m666 /dev/adf-interface0.0 c 250 1
+    mknod -m666 /dev/adf-overlay-engine0.0 c 250 2
+    restorecon /dev/adf0 /dev/adf-interface0.0 /dev/adf-overlay-engine0.0
+fi