Tentative fix for NVIDIA 470.141.03 driver for Linux 6.0-rc1

nvidia-470xx-fix-linux-6.0.patch

From 17bed78791d6f311c83ff1794d085b18c9f89730 Mon Sep 17 00:00:00 2001
From: Joan Bruguera <joanbrugueram@gmail.com>
Date: Wed, 3 Aug 2022 00:56:57 +0200
Subject: [PATCH] Tentative fix for NVIDIA 470.141.03 driver for Linux 6.0-rc1

---
 nvidia-drm/nvidia-drm-helper.c | 5 +++++
 nvidia/nv-acpi.c               | 5 ++++-
 nvidia/nv.c                    | 3 ++-
 3 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/nvidia-drm/nvidia-drm-helper.c b/nvidia-drm/nvidia-drm-helper.c
index 3831180..fa03d51 100644
--- a/nvidia-drm/nvidia-drm-helper.c
+++ b/nvidia-drm/nvidia-drm-helper.c
@@ -41,6 +41,11 @@
 #include <drm/drm_atomic_uapi.h>
 #endif
 
+// Add header which is no longer indirectly referenced as of Linux 6.0-rc1
+#if defined(NV_DRM_DRM_FRAMEBUFFER_H_PRESENT)
+#include <drm/drm_framebuffer.h>
+#endif
+
 static void __nv_drm_framebuffer_put(struct drm_framebuffer *fb)
 {
 #if defined(NV_DRM_FRAMEBUFFER_GET_PRESENT)
diff --git a/nvidia/nv-acpi.c b/nvidia/nv-acpi.c
index 2b7b988..76c36fa 100644
--- a/nvidia/nv-acpi.c
+++ b/nvidia/nv-acpi.c
@@ -16,7 +16,10 @@
 
 #include <linux/acpi.h>
 
-#if defined(NV_LINUX_ACPI_EVENTS_SUPPORTED)
+#include <linux/version.h>
+// Rel.commit "ACPI: bus: Drop unused list heads from struct acpi_device" (Rafael J. Wysocki, 4 Jun 2022)
+// Disable ACPI support due to more GPL stuff (acpi_dev_for_each_child is only GPL-exported)
+#if defined(NV_LINUX_ACPI_EVENTS_SUPPORTED) && (LINUX_VERSION_CODE < KERNEL_VERSION(6, 0, 0))
 static NV_STATUS   nv_acpi_extract_integer (const union acpi_object *, void *, NvU32, NvU32 *);
 static NV_STATUS   nv_acpi_extract_buffer  (const union acpi_object *, void *, NvU32, NvU32 *);
 static NV_STATUS   nv_acpi_extract_package (const union acpi_object *, void *, NvU32, NvU32 *);
diff --git a/nvidia/nv.c b/nvidia/nv.c
index ab7d17c..e313e2e 100644
--- a/nvidia/nv.c
+++ b/nvidia/nv.c
@@ -5423,7 +5423,8 @@ NvBool NV_API_CALL nv_s2idle_pm_configured(void)
 {
     NvU8 buf[8];
 
-#if defined(NV_SEQ_READ_ITER_PRESENT)
+// FIXME: Avoid this code path because on Linux 6.0-rc1, init_sync_kiocb references a GPL symbol
+#if defined(NV_SEQ_READ_ITER_PRESENT) && (LINUX_VERSION_CODE < KERNEL_VERSION(6, 0, 0))
     struct file *file;
     ssize_t num_read;
     struct kiocb kiocb;
-- 
2.37.1