diff -rau work-orig/kernel/conftest.sh work/kernel/conftest.sh
--- work-orig/kernel/conftest.sh	2010-11-13 08:16:22.000000000 +0100
+++ work/kernel/conftest.sh	2010-11-13 10:36:48.000000000 +0100
@@ -1104,6 +1104,60 @@
             fi
         ;;
 
+        file_operations)
+            #
+            # Determine if the 'file_operations' structure has
+            # 'ioctl', 'unlocked_ioctl' and 'compat_ioctl' fields.
+            #
+            echo "$CONFTEST_PREAMBLE
+            #include <linux/fs.h>
+            int conftest_file_operations(void) {
+                return offsetof(struct file_operations, ioctl);
+            }" > conftest$$.c
+
+            $CC $CFLAGS -c conftest$$.c > /dev/null 2>&1
+            rm -f conftest$$.c
+
+            if [ -f conftest$$.o ]; then
+                echo "#define NV_FILE_OPERATIONS_HAS_IOCTL" >> conftest.h
+                rm -f conftest$$.o
+            else
+                echo "#undef NV_FILE_OPERATIONS_HAS_IOCTL" >> conftest.h
+            fi
+
+            echo "$CONFTEST_PREAMBLE
+            #include <linux/fs.h>
+            int conftest_file_operations(void) {
+                return offsetof(struct file_operations, unlocked_ioctl);
+            }" > conftest$$.c
+
+            $CC $CFLAGS -c conftest$$.c > /dev/null 2>&1
+            rm -f conftest$$.c
+
+            if [ -f conftest$$.o ]; then
+                echo "#define NV_FILE_OPERATIONS_HAS_UNLOCKED_IOCTL" >> conftest.h
+                rm -f conftest$$.o
+            else
+                echo "#undef NV_FILE_OPERATIONS_HAS_UNLOCKED_IOCTL" >> conftest.h
+            fi
+
+            echo "$CONFTEST_PREAMBLE
+            #include <linux/fs.h>
+            int conftest_file_operations(void) {
+                return offsetof(struct file_operations, compat_ioctl);
+            }" > conftest$$.c
+
+            $CC $CFLAGS -c conftest$$.c > /dev/null 2>&1
+            rm -f conftest$$.c
+
+            if [ -f conftest$$.o ]; then
+                echo "#define NV_FILE_OPERATIONS_HAS_COMPAT_IOCTL" >> conftest.h
+                rm -f conftest$$.o
+            else
+                echo "#undef NV_FILE_OPERATIONS_HAS_COMPAT_IOCTL" >> conftest.h
+            fi
+        ;;
+
         pci_domain_nr)
             #
             # Determine if the pci_domain_nr() function is present.
diff -rau work-orig/kernel/Makefile.kbuild work/kernel/Makefile.kbuild
--- work-orig/kernel/Makefile.kbuild	2010-11-13 08:16:22.000000000 +0100
+++ work/kernel/Makefile.kbuild	2010-11-13 10:32:11.000000000 +0100
@@ -156,6 +156,7 @@
  acpi_device_ops \
  acpi_device_id \
  acquire_console_sem \
+ file_operations \
  kmem_cache_create \
  on_each_cpu \
  smp_call_function \
diff -rau work-orig/kernel/Makefile.nvidia work/kernel/Makefile.nvidia
--- work-orig/kernel/Makefile.nvidia	2010-08-28 05:28:03.000000000 +0200
+++ work/kernel/Makefile.nvidia	2010-11-13 10:32:11.000000000 +0100
@@ -56,6 +56,7 @@
 	i2c_adapter \
 	smp_call_function \
 	acpi_evaluate_integer \
+	file_operations \
 	proc_dir_entry \
  scatterlist
 
diff -rau work-orig/kernel/nv.c work/kernel/nv.c
--- work-orig/kernel/nv.c	2010-11-13 08:22:55.000000000 +0100
+++ work/kernel/nv.c	2010-11-13 10:32:11.000000000 +0100
@@ -423,11 +423,13 @@
 static struct file_operations nv_fops = {
     .owner     = THIS_MODULE,
     .poll      = nv_kern_poll,
+#if defined(NV_FILE_OPERATIONS_HAS_IOCTL)    
     .ioctl     = nv_kern_ioctl,
-#if defined(HAVE_UNLOCKED_IOCTL)
+#endif    
+#if defined(NV_FILE_OPERATIONS_HAS_UNLOCKED_IOCTL)
     .unlocked_ioctl = nv_kern_unlocked_ioctl,
 #endif
-#if defined(NVCPU_X86_64) && defined(HAVE_COMPAT_IOCTL)
+#if defined(NVCPU_X86_64) && defined(NV_FILE_OPERATIONS_HAS_COMPAT_IOCTL)
     .compat_ioctl = nv_kern_compat_ioctl,
 #endif
 #ifndef NV_USER_MAP
diff -rau work-orig/kernel/nv-linux.h work/kernel/nv-linux.h
--- work-orig/kernel/nv-linux.h	2010-08-28 05:28:03.000000000 +0200
+++ work/kernel/nv-linux.h	2010-11-13 10:32:11.000000000 +0100
@@ -112,6 +112,11 @@
 #include <asm/ioctl32.h>            /* sys_ioctl() (ioctl32)            */
 #endif
 
+#if !defined(NV_FILE_OPERATIONS_HAS_IOCTL) && \
+  !defined(NV_FILE_OPERATIONS_HAS_UNLOCKED_IOCTL)
+#error "struct file_operations compile test likely failed!"
+#endif
+
 #if defined(CONFIG_VGA_ARB)
 #include <linux/vgaarb.h>
 #endif