diff -Nru nvidia-graphics-drivers-390-390.144/debian/changelog nvidia-graphics-drivers-390-390.144/debian/changelog
--- nvidia-graphics-drivers-390-390.144/debian/changelog	2021-07-05 08:22:50.000000000 +0000
+++ nvidia-graphics-drivers-390-390.144/debian/changelog	2021-09-06 12:45:47.000000000 +0000
@@ -1,3 +1,11 @@
+nvidia-graphics-drivers-390 (390.144-0ubuntu2) impish; urgency=medium
+
+  * debian/dkms_nvidia/patches/buildfix_kernel_5.14.patch,
+    debian/templates/dkms_nvidia.conf.in:
+    - Fix build failure with Linux 5.14.
+
+ -- Alberto Milone <alberto.milone@canonical.com>  Mon, 06 Sep 2021 14:45:47 +0200
+
 nvidia-graphics-drivers-390 (390.144-0ubuntu1) impish; urgency=medium
 
   * New upstream release (LP: #1933980).
diff -Nru nvidia-graphics-drivers-390-390.144/debian/dkms_nvidia/patches/buildfix_kernel_5.14.patch nvidia-graphics-drivers-390-390.144/debian/dkms_nvidia/patches/buildfix_kernel_5.14.patch
--- nvidia-graphics-drivers-390-390.144/debian/dkms_nvidia/patches/buildfix_kernel_5.14.patch	1970-01-01 00:00:00.000000000 +0000
+++ nvidia-graphics-drivers-390-390.144/debian/dkms_nvidia/patches/buildfix_kernel_5.14.patch	2021-09-06 12:44:15.000000000 +0000
@@ -0,0 +1,84 @@
+From 07f6abf333755e8d209ed12a51548ed297e00d9a Mon Sep 17 00:00:00 2001
+From: Alberto Milone <alberto.milone@canonical.com>
+Date: Mon, 6 Sep 2021 13:52:38 +0200
+Subject: [PATCH 1/1] Add support for Linux 5.14
+
+---
+ nvidia-drm/nvidia-drm-drv.c | 3 +++
+ nvidia/nvlink_linux.c       | 5 +++++
+ nvidia/os-interface.c       | 5 +++++
+ 3 files changed, 13 insertions(+)
+
+diff --git a/nvidia-drm/nvidia-drm-drv.c b/nvidia-drm/nvidia-drm-drv.c
+index 54389be..2088057 100644
+--- a/nvidia-drm/nvidia-drm-drv.c
++++ b/nvidia-drm/nvidia-drm-drv.c
+@@ -22,6 +22,7 @@
+ 
+ #include "nvidia-drm-conftest.h" /* NV_DRM_AVAILABLE and NV_DRM_DRM_GEM_H_PRESENT */
+ 
++#include <linux/version.h>
+ #include "nvidia-drm-priv.h"
+ #include "nvidia-drm-drv.h"
+ #include "nvidia-drm-fb.h"
+@@ -811,7 +812,9 @@ static void nv_drm_register_drm_device(const nv_gpu_info_t *gpu_info)
+ 
+     dev->dev_private = nv_dev;
+     nv_dev->dev = dev;
++#if (LINUX_VERSION_CODE < KERNEL_VERSION(5, 14, 0))
+     dev->pdev = pdev;
++#endif
+ 
+     /* Register DRM device to DRM sub-system */
+ 
+diff --git a/nvidia/nvlink_linux.c b/nvidia/nvlink_linux.c
+index 872bc90..97b0de0 100644
+--- a/nvidia/nvlink_linux.c
++++ b/nvidia/nvlink_linux.c
+@@ -23,6 +23,7 @@
+ 
+ #include "conftest.h"
+ 
++#include <linux/version.h>
+ #include "nvlink_common.h"
+ #include "nvlink_linux.h"
+ #include "nvlink_errors.h"
+@@ -597,7 +598,11 @@ void NVLINK_API_CALL nvlink_sleep(unsigned int ms)
+         // the requested timeout has expired, loop until less
+         // than a jiffie of the desired delay remains.
+         //
++#if (LINUX_VERSION_CODE < KERNEL_VERSION(5, 14, 0))
+         current->state = TASK_INTERRUPTIBLE;
++#else
++        WRITE_ONCE(current->__state, TASK_INTERRUPTIBLE);
++#endif
+         do
+         {
+             schedule_timeout(jiffies);
+diff --git a/nvidia/os-interface.c b/nvidia/os-interface.c
+index 3603a5a..679e997 100644
+--- a/nvidia/os-interface.c
++++ b/nvidia/os-interface.c
+@@ -9,6 +9,7 @@
+  */
+ 
+ #define  __NO_VERSION__
++#include <linux/version.h>
+ #include "nv-misc.h"
+ 
+ #include "os-interface.h"
+@@ -580,7 +581,11 @@ NV_STATUS NV_API_CALL os_delay(NvU32 MilliSeconds)
+         // the requested timeout has expired, loop until less
+         // than a jiffie of the desired delay remains.
+         //
++#if (LINUX_VERSION_CODE < KERNEL_VERSION(5, 14, 0))
+         current->state = TASK_INTERRUPTIBLE;
++#else
++        WRITE_ONCE(current->__state, TASK_INTERRUPTIBLE);
++#endif
+         do
+         {
+             schedule_timeout(jiffies);
+-- 
+2.30.2
+
diff -Nru nvidia-graphics-drivers-390-390.144/debian/dkms_nvidia.conf nvidia-graphics-drivers-390-390.144/debian/dkms_nvidia.conf
--- nvidia-graphics-drivers-390-390.144/debian/dkms_nvidia.conf	2021-07-05 08:22:50.000000000 +0000
+++ nvidia-graphics-drivers-390-390.144/debian/dkms_nvidia.conf	2021-09-06 12:45:47.000000000 +0000
@@ -25,6 +25,6 @@
 DEST_MODULE_LOCATION[2]="/kernel/drivers/char/drm"
 AUTOINSTALL="yes"
 PATCH[0]="disable_fstack-clash-protection_fcf-protection.patch"
-#PATCH[1]="buildfix_kernel_5.13.patch"
+PATCH[1]="buildfix_kernel_5.14.patch"
 #PATCH[1]="do-not-call-pci_save_state.patch"
 #PATCH_MATCH[0]="^4.[6-7]"
diff -Nru nvidia-graphics-drivers-390-390.144/debian/templates/dkms_nvidia.conf.in nvidia-graphics-drivers-390-390.144/debian/templates/dkms_nvidia.conf.in
--- nvidia-graphics-drivers-390-390.144/debian/templates/dkms_nvidia.conf.in	2021-07-05 08:22:50.000000000 +0000
+++ nvidia-graphics-drivers-390-390.144/debian/templates/dkms_nvidia.conf.in	2021-09-06 12:45:02.000000000 +0000
@@ -25,6 +25,6 @@
 DEST_MODULE_LOCATION[2]="/kernel/drivers/char/drm"
 AUTOINSTALL="yes"
 PATCH[0]="disable_fstack-clash-protection_fcf-protection.patch"
-#PATCH[1]="buildfix_kernel_5.13.patch"
+PATCH[1]="buildfix_kernel_5.14.patch"
 #PATCH[1]="do-not-call-pci_save_state.patch"
 #PATCH_MATCH[0]="^4.[6-7]"