--- x11/nvidia-driver/Makefile.orig	2021-02-05 17:47:32.299334000 +0900
+++ x11/nvidia-driver/Makefile	2021-02-05 22:41:15.548341000 +0900
@@ -73,7 +73,8 @@ SUB_PATCHES+=	extra-patch-src-nvidia_ctl.c \
 		extra-patch-src-nvidia_linux.c
 .else
 EXTRA_PATCHES+=	${FILESDIR}/460-patch-lib-libGLX_nvidia-Makefile
-SUB_PATCHES+=	460-patch-src-nvidia_linux.c
+SUB_PATCHES+=	460-patch-src-nvidia_ctl.c \
+		460-patch-src-nvidia_linux.c
 .endif
 
 OPTIONS_DEFINE=	ACPI_PM LINUX WBINVD DOCS
--- /dev/null	2021-02-05 23:24:25.531346000 +0900
+++ x11/nvidia-driver/files/460-patch-src-nvidia_ctl.c.in	2021-02-05 22:54:45.253393000 +0900
@@ -0,0 +1,73 @@
+--- src/%%NVSRC%%/nvidia_ctl.c.orig	2021-01-21 21:50:34 UTC
++++ src/%%NVSRC%%/nvidia_ctl.c
+@@ -13,6 +13,12 @@
+ #include "nv.h"
+ #include "nv-freebsd.h"
+ 
++#ifdef NV_SUPPORT_LINUX_COMPAT /* (COMPAT_LINUX || COMPAT_LINUX32) */
++#include <compat/linux/linux_util.h>
++
++const char nvidia_driver_name[] = "nvidia";
++#endif
++
+ static d_open_t  nvidia_ctl_open;
+ static d_ioctl_t nvidia_ctl_ioctl;
+ static d_poll_t  nvidia_ctl_poll;
+@@ -162,6 +168,18 @@ static int nvidia_ctl_poll(
+ 
+ int nvidia_ctl_attach(void)
+ {
++#ifdef NV_SUPPORT_LINUX_COMPAT
++    struct linux_device_handler nvidia_ctl_linux_handler = {
++        .bsd_driver_name = __DECONST(char *, nvidia_driver_name),
++        .linux_driver_name = __DECONST(char *, nvidia_driver_name),
++        .bsd_device_name = __DECONST(char *, nvidia_ctl_cdevsw.d_name),
++        .linux_device_name = __DECONST(char *, nvidia_ctl_cdevsw.d_name),
++        .linux_major = NV_MAJOR_DEVICE_NUMBER,
++        .linux_minor = 255,
++        .linux_char_device = 1
++    };
++#endif
++
+     if (nvidia_count == 0) {
+         nvidia_ctl_cdev = make_dev(&nvidia_ctl_cdevsw,
+                 CDEV_CTL_MINOR,
+@@ -169,6 +187,10 @@ int nvidia_ctl_attach(void)
+                 "%s", nvidia_ctl_cdevsw.d_name);
+         if (nvidia_ctl_cdev == NULL)
+             return ENOMEM;
++
++#ifdef NV_SUPPORT_LINUX_COMPAT
++        (void)linux_device_register_handler(&nvidia_ctl_linux_handler);
++#endif
+     }
+ 
+     nvidia_count++;
+@@ -177,10 +199,26 @@ int nvidia_ctl_attach(void)
+ 
+ int nvidia_ctl_detach(void)
+ {
++#ifdef NV_SUPPORT_LINUX_COMPAT
++    struct linux_device_handler nvidia_ctl_linux_handler = {
++        .bsd_driver_name = __DECONST(char *, nvidia_driver_name),
++        .linux_driver_name = __DECONST(char *, nvidia_driver_name),
++        .bsd_device_name = __DECONST(char *, nvidia_ctl_cdevsw.d_name),
++        .linux_device_name = __DECONST(char *, nvidia_ctl_cdevsw.d_name),
++        .linux_major = NV_MAJOR_DEVICE_NUMBER,
++        .linux_minor = 255,
++        .linux_char_device = 1
++    };
++#endif
++
+     nvidia_count--;
+ 
+-    if (nvidia_count == 0)
++    if (nvidia_count == 0) {
++#ifdef NV_SUPPORT_LINUX_COMPAT
++        (void)linux_device_unregister_handler(&nvidia_ctl_linux_handler);
++#endif
+         destroy_dev(nvidia_ctl_cdev);
++    }
+ 
+     return 0;
+ }