--- char-driver/char-driver.c.orig	2008-03-09 13:05:30.000000000 -0600
+++ char-driver/char-driver.c	2008-03-09 13:04:33.000000000 -0600
@@ -26,7 +26,6 @@
 /* ---- Include Files ---------------------------------------------------- */
 
 #include <linux/module.h>
-#include <linux/config.h>
 #include <linux/init.h>
 #include <linux/fs.h>
 #include <linux/spinlock.h>
@@ -426,12 +425,17 @@
     printk( "sample driver allocated major:%d minor:%d\n", MAJOR( gSampleDevNum ), MINOR( gSampleDevNum ));
 
     // Register our proc entries.
-
-    gSysCtlHeader = register_sysctl_table( gSysCtl, 0 );
-    if ( gSysCtlHeader != NULL )
-    {
-        gSysCtlHeader->ctl_table->child->de->owner = THIS_MODULE;
-    }
+#if USE_SYSCTL
+    #if ( LINUX_VERSION_CODE <= KERNEL_VERSION( 2, 6, 20 ))
+        gSysCtlHeader = register_sysctl_table( gSysCtl, 0 );
+        if ( gSysCtlHeader != NULL )
+        {
+            gSysCtlHeader->ctl_table->child->de->owner = THIS_MODULE;
+        }
+    #else
+        gSysCtlHeader = register_sysctl_table( gSysCtl );
+    #endif
+#endif
 
     // Register our device. The device becomes "active" as soon as cdev_add 
     // is called.