From 3a9c8b6c61eda94695a6f16e31707cd141e7191f Mon Sep 17 00:00:00 2001
From: chayleaf <chayleaf-git@pavluk.org>
Date: Wed, 12 Jul 2023 14:44:30 +0700
Subject: [PATCH] linuxPackages.kvmfr: fix for linux 6.4

---
 pkgs/os-specific/linux/kvmfr/default.nix         |  7 +++++--
 .../linux/kvmfr/linux-6-4-compat.patch           | 16 ++++++++++++++++
 2 files changed, 21 insertions(+), 2 deletions(-)
 create mode 100644 pkgs/os-specific/linux/kvmfr/linux-6-4-compat.patch

diff --git a/pkgs/os-specific/linux/kvmfr/default.nix b/pkgs/os-specific/linux/kvmfr/default.nix
index 6b5f31a1d350..67d4d8af2eb8 100644
--- a/pkgs/os-specific/linux/kvmfr/default.nix
+++ b/pkgs/os-specific/linux/kvmfr/default.nix
@@ -1,11 +1,14 @@
-{ lib, stdenv, fetchFromGitHub, kernel, kmod, looking-glass-client }:
+{ lib, stdenv, kernel, looking-glass-client }:
 
-stdenv.mkDerivation rec {
+stdenv.mkDerivation {
   pname = "kvmfr";
   version = looking-glass-client.version;
 
   src = looking-glass-client.src;
   sourceRoot = "source/module";
+  patches = lib.optional (kernel.kernelAtLeast "6.4") [
+    ./linux-6-4-compat.patch
+  ];
   hardeningDisable = [ "pic" "format" ];
   nativeBuildInputs = kernel.moduleBuildDependencies;
 
diff --git a/pkgs/os-specific/linux/kvmfr/linux-6-4-compat.patch b/pkgs/os-specific/linux/kvmfr/linux-6-4-compat.patch
new file mode 100644
index 000000000000..e57d1d27c36c
--- /dev/null
+++ b/pkgs/os-specific/linux/kvmfr/linux-6-4-compat.patch
@@ -0,0 +1,16 @@
+diff --git a/kvmfr.c b/kvmfr.c
+index 121aae5b..2f4c9e1a 100644
+--- a/kvmfr.c
++++ b/kvmfr.c
+@@ -539,7 +539,11 @@ static int __init kvmfr_module_init(void)
+   if (kvmfr->major < 0)
+     goto out_free;
+ 
++#if LINUX_VERSION_CODE < KERNEL_VERSION(6, 4, 0)
+   kvmfr->pClass = class_create(THIS_MODULE, KVMFR_DEV_NAME);
++#else
++  kvmfr->pClass = class_create(KVMFR_DEV_NAME);
++#endif
+   if (IS_ERR(kvmfr->pClass))
+     goto out_unreg;
+