From 778154e379b733fdde4da1b1e1b75be28c02a3cc Mon Sep 17 00:00:00 2001
From: Wei Wang <wvw@google.com>
Date: Tue, 27 Jun 2017 16:04:37 -0700
Subject: [PATCH] init.hardware.rc: shutdown ssr_setup early to avoid subsystem
 restart

We see subsystem restarts happens during shutdown, this leads to
unnecessary FW loading and sometimes kernel panic.
This CL is to stop ssr_setup when framework sets
"sys.shutdown.requested" to avoid subsystem restart.

Bug: 38203024
Test: Walleye shutdown/reboot
Change-Id: I379504029f0a988a072a5ea6b8b29baa2721112b
---
 init.hardware.rc | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/init.hardware.rc b/init.hardware.rc
index c656419c..ba72e8cc 100644
--- a/init.hardware.rc
+++ b/init.hardware.rc
@@ -494,8 +494,10 @@ on property:sys.boot_completed=1
 on property:init.svc.per_mgr=running
     start per_proxy
 
-on property:sys.shutdown.requested=*
+on shutdown
     stop per_proxy
+    # Disable subsystem restart
+    write /sys/module/subsystem_restart/parameters/disable_restart_work 0x9889deed
 
 service qseecomd /vendor/bin/qseecomd
    class core