From 7350e3ee759418cdad452a7755f63da9372cbc67 Mon Sep 17 00:00:00 2001
From: Avery Black <avery.c.black@gmail.com>
Date: Sun, 13 Oct 2024 06:55:22 -0700
Subject: [PATCH] Fixed multiple PS2/SMBus devices attaching (#64)

---
 Changelog.md                                     | 3 +++
 VoodooPS2Trackpad/VoodooPS2SynapticsTouchPad.cpp | 4 ++++
 2 files changed, 7 insertions(+)

diff --git a/Changelog.md b/Changelog.md
index f6655e3..2ede481 100644
--- a/Changelog.md
+++ b/Changelog.md
@@ -1,5 +1,8 @@
 VoodooPS2 Changelog
 ============================
+#### v2.3.7
+- Fixed multiple PS2/SMBus devices attaching
+
 #### v2.3.6
 - Lowered macOS requirements to 10.10
 - Added PS/2 stub driver for better VoodooRMI compatibility
diff --git a/VoodooPS2Trackpad/VoodooPS2SynapticsTouchPad.cpp b/VoodooPS2Trackpad/VoodooPS2SynapticsTouchPad.cpp
index f8cdf8e..ee668b8 100644
--- a/VoodooPS2Trackpad/VoodooPS2SynapticsTouchPad.cpp
+++ b/VoodooPS2Trackpad/VoodooPS2SynapticsTouchPad.cpp
@@ -213,6 +213,10 @@ IOService* ApplePS2SynapticsTouchPad::probe(IOService * provider, SInt32 * score
         dictionary->setObject("Clickpad", _cont_caps.one_btn_clickpad ?
                               kOSBooleanTrue : kOSBooleanFalse);
         ApplePS2SmbusDevice *smbus = ApplePS2SmbusDevice::withReset(true, dictionary, 0x2C);
+        
+        // gIOMatchCategoryKey is necessary to prevent multiple services attaching to the PS2 device
+        if (smbus)
+            smbus->setProperty(gIOMatchCategoryKey, getProperty(gIOMatchCategoryKey));
         OSSafeReleaseNULL(dictionary);
         return smbus;
     }