nvidia-470xx-utils: Yeah, patch...

Signed-off-by: Vasiliy Stelmachenok <[email protected]>

nvidia/nvidia-470xx-utils/kernel-6.12.patch

@@ -0,0 +1,111 @@
+From 839b964bd5be20275a4d1add020e68e407380adb Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Joan=20Bruguera=20Mic=C3=B3?= <[email protected]>
+Date: Sat, 17 Aug 2024 14:26:04 +0000
+Subject: [PATCH] Tentative fix for NVIDIA 470.256.02 driver for Linux 6.12-rc1
+
+Note that the fix requires enabling DRM kernel mode setting
+(add the `nvidia-drm.modeset=1` parameter to the kernel command line).
+
+(Thanks xtexChooser for the memory management fixes!)
+---
+ nvidia-drm/nvidia-drm-drv.c | 47 +++++++++++++++++++++++++++++++++++++
+ 1 file changed, 47 insertions(+)
+
+diff --git a/nvidia-drm/nvidia-drm-drv.c b/nvidia-drm/nvidia-drm-drv.c
+index f350134..d6233a5 100644
+--- a/nvidia-drm/nvidia-drm-drv.c
++++ b/nvidia-drm/nvidia-drm-drv.c
+@@ -84,6 +84,11 @@
+ #include <drm/drm_atomic_helper.h>
+ #endif
+
++#include <linux/version.h>
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(6, 12, 0)
++#include <drm/drm_client.h>
++#endif
++
+ static struct nv_drm_device *dev_list = NULL;
+
+ #if defined(NV_DRM_ATOMIC_MODESET_AVAILABLE)
+@@ -168,7 +173,12 @@ static const struct drm_mode_config_funcs nv_mode_config_funcs = {
+     .atomic_check  = nv_drm_atomic_check,
+     .atomic_commit = nv_drm_atomic_commit,
+
++#if LINUX_VERSION_CODE < KERNEL_VERSION(6, 12, 0)
++    // Rel. commit. "drm: Remove struct drm_mode_config_funcs.output_poll_changed" (Thomas Zimmermann, 12 Aug 2024)
++    // Replace this callback with a DRM client's hotplug callback.
++    // This is required for e.g. /sys/class/drm/card*/modes to work.
+     .output_poll_changed = nv_drm_output_poll_changed,
++#endif
+ };
+
+ static void nv_drm_event_callback(const struct NvKmsKapiEvent *event)
+@@ -739,6 +749,10 @@ static const struct file_operations nv_drm_fops = {
+     .read           = drm_read,
+
+     .llseek         = noop_llseek,
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(6, 12, 0)
++    // Rel. commit. "fs: move FMODE_UNSIGNED_OFFSET to fop_flags" (Christian Brauner, 9 Aug 2024)
++    .fop_flags      = FOP_UNSIGNED_OFFSET,
++#endif
+ };
+
+ static const struct drm_ioctl_desc nv_drm_ioctls[] = {
+@@ -906,7 +920,18 @@ static void nv_drm_update_drm_driver_features(void)
+ #endif /* NV_DRM_ATOMIC_MODESET_AVAILABLE */
+ }
+
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(6, 12, 0)
++static int hotplug_helper_client_hotplug(struct drm_client_dev *client)
++{
++    nv_drm_output_poll_changed(client->dev);
++    return 0;
++}
+
++static const struct drm_client_funcs nv_hotplug_helper_client_funcs = {
++    .owner      = THIS_MODULE,
++    .hotplug    = hotplug_helper_client_hotplug,
++};
++#endif
+
+ /*
+  * Helper function for allocate/register DRM device for given NVIDIA GPU ID.
+@@ -962,6 +987,20 @@ static void nv_drm_register_drm_device(const nv_gpu_info_t *gpu_info)
+         goto failed_drm_register;
+     }
+
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(6, 12, 0)
++    /* Register a DRM client for receiving hotplug events */
++    struct drm_client_dev *client = kzalloc(sizeof(*client), GFP_KERNEL);
++    if (client == NULL || drm_client_init(dev, client,
++        "nv-hotplug-helper", &nv_hotplug_helper_client_funcs)) {
++        printk(KERN_WARNING "Failed to initialize the nv-hotplug-helper DRM client"
++            " (ensure DRM kernel mode setting is enabled via nvidia-drm.modeset=1).\n");
++        goto failed_drm_client_init;
++    }
++
++    drm_client_register(client);
++    pr_info("Registered the nv-hotplug-helper DRM client.\n");
++#endif
++
+     /* Add NVIDIA-DRM device into list */
+
+     nv_dev->next = dev_list;
+@@ -969,6 +1008,14 @@ static void nv_drm_register_drm_device(const nv_gpu_info_t *gpu_info)
+
+     return; /* Success */
+
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(6, 12, 0)
++failed_drm_client_init:
++
++    kfree(client);
++    drm_dev_unregister(dev);
++
++#endif
++
+ failed_drm_register:
+
+     nv_drm_dev_free(dev);
+-- 
+2.47.0
+