From bdbf80639936701337f4574bae8c3ea25bb8dd3d Mon Sep 17 00:00:00 2001
From: Avery Black <avery.c.black@gmail.com>
Date: Sun, 13 Oct 2024 07:47:14 -0700
Subject: [PATCH] Disable PS/2 stub on shutdown (#65)

---
 Changelog.md                               | 1 +
 VoodooPS2Trackpad/VoodooPS2SMBusDevice.cpp | 6 ++++++
 VoodooPS2Trackpad/VoodooPS2SMBusDevice.h   | 1 +
 3 files changed, 8 insertions(+)

diff --git a/Changelog.md b/Changelog.md
index 2ede481..34156d3 100644
--- a/Changelog.md
+++ b/Changelog.md
@@ -2,6 +2,7 @@ VoodooPS2 Changelog
 ============================
 #### v2.3.7
 - Fixed multiple PS2/SMBus devices attaching
+- Fixed eratic pointer in bootpicker by disabling SMBus/PS2 devices on shutdown 
 
 #### v2.3.6
 - Lowered macOS requirements to 10.10
diff --git a/VoodooPS2Trackpad/VoodooPS2SMBusDevice.cpp b/VoodooPS2Trackpad/VoodooPS2SMBusDevice.cpp
index 3680395..7b93823 100644
--- a/VoodooPS2Trackpad/VoodooPS2SMBusDevice.cpp
+++ b/VoodooPS2Trackpad/VoodooPS2SMBusDevice.cpp
@@ -53,6 +53,12 @@ bool ApplePS2SmbusDevice::start(IOService *provider) {
     return true;
 }
 
+void ApplePS2SmbusDevice::stop(IOService *provider) {
+    _nub->uninstallPowerControlAction();
+    resetDevice();
+    super::stop(provider);
+}
+
 void ApplePS2SmbusDevice::free() {
     OSSafeReleaseNULL(_data);
     super::free();
diff --git a/VoodooPS2Trackpad/VoodooPS2SMBusDevice.h b/VoodooPS2Trackpad/VoodooPS2SMBusDevice.h
index 26f386c..de3bfd7 100644
--- a/VoodooPS2Trackpad/VoodooPS2SMBusDevice.h
+++ b/VoodooPS2Trackpad/VoodooPS2SMBusDevice.h
@@ -30,6 +30,7 @@ class EXPORT ApplePS2SmbusDevice : public IOService {
     static ApplePS2SmbusDevice *withReset(bool resetNeeded, OSDictionary *data, uint8_t addr);
     
     bool start(IOService *provider) override;
+    void stop(IOService *provider) override;
     void free() override;
     
 private: