From 68c97812993c77f131b1fe614c853c1aea395bf2 Mon Sep 17 00:00:00 2001
From: Andreas Kling <kling@serenityos.org>
Date: Sun, 19 Feb 2023 23:14:42 +0100
Subject: [PATCH] Kernel: Fix const-correctness of PCI::DeviceIdentifier usage

---
 Kernel/Bus/PCI/Device.h                                      | 4 ++--
 Kernel/FileSystem/SysFS/Subsystems/Bus/PCI/DeviceDirectory.h | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/Kernel/Bus/PCI/Device.h b/Kernel/Bus/PCI/Device.h
index 418c3ae3d9..58a47f0657 100644
--- a/Kernel/Bus/PCI/Device.h
+++ b/Kernel/Bus/PCI/Device.h
@@ -16,7 +16,7 @@ namespace Kernel::PCI {
 
 class Device {
 public:
-    DeviceIdentifier& device_identifier() const { return *m_pci_identifier; };
+    DeviceIdentifier const& device_identifier() const { return *m_pci_identifier; };
 
     virtual ~Device() = default;
 
@@ -38,7 +38,7 @@ protected:
     explicit Device(DeviceIdentifier const& pci_identifier);
 
 private:
-    NonnullRefPtr<DeviceIdentifier> m_pci_identifier;
+    NonnullRefPtr<DeviceIdentifier const> m_pci_identifier;
 };
 
 template<typename... Parameters>
diff --git a/Kernel/FileSystem/SysFS/Subsystems/Bus/PCI/DeviceDirectory.h b/Kernel/FileSystem/SysFS/Subsystems/Bus/PCI/DeviceDirectory.h
index c02361d8ef..05042fb754 100644
--- a/Kernel/FileSystem/SysFS/Subsystems/Bus/PCI/DeviceDirectory.h
+++ b/Kernel/FileSystem/SysFS/Subsystems/Bus/PCI/DeviceDirectory.h
@@ -16,14 +16,14 @@ namespace Kernel {
 class PCIDeviceSysFSDirectory final : public SysFSDirectory {
 public:
     static NonnullLockRefPtr<PCIDeviceSysFSDirectory> create(SysFSDirectory const&, PCI::DeviceIdentifier const&);
-    PCI::DeviceIdentifier& device_identifier() const { return *m_device_identifier; }
+    PCI::DeviceIdentifier const& device_identifier() const { return *m_device_identifier; }
 
     virtual StringView name() const override { return m_device_directory_name->view(); }
 
 private:
     PCIDeviceSysFSDirectory(NonnullOwnPtr<KString> device_directory_name, SysFSDirectory const&, PCI::DeviceIdentifier const&);
 
-    NonnullRefPtr<PCI::DeviceIdentifier> m_device_identifier;
+    NonnullRefPtr<PCI::DeviceIdentifier const> m_device_identifier;
 
     NonnullOwnPtr<KString> m_device_directory_name;
 };