From f69e256376e939e63029c8d8be8b97eaa206eec0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?George=20Bi=C8=99oc?= <george.bisoc@reactos.org>
Date: Mon, 20 May 2024 16:16:24 +0200
Subject: [PATCH] [ACPI] Register a device interface class with ACPI fans

As the commit title says, the point of registering a device interface with ACPI fans is to receive incoming PnP notifications of incoming ACPI fan drivers so that the power manager can connect to them by creating a power device policies dedicated to them during power manager initialization.

CORE-18969
---
 drivers/bus/acpi/buspdo.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/bus/acpi/buspdo.c b/drivers/bus/acpi/buspdo.c
index e91d09fecf5..16eff2250bd 100644
--- a/drivers/bus/acpi/buspdo.c
+++ b/drivers/bus/acpi/buspdo.c
@@ -76,6 +76,14 @@ Bus_PDO_PnP (
                                                NULL,
                                                &DeviceData->InterfaceName);
         }
+        else if (device->flags.hardware_id &&
+                 strstr(device->pnp.hardware_id, ACPI_FAN_HID))
+        {
+            status = IoRegisterDeviceInterface(DeviceData->Common.Self,
+                                               &GUID_DEVICE_FAN,
+                                               NULL,
+                                               &DeviceData->InterfaceName);
+        }
         else if (device->flags.hardware_id &&
                  strstr(device->pnp.hardware_id, ACPI_BUTTON_HID_LID))
         {