--- Net2/sys/chio.h	2018/04/24 18:10:36	1.1.1.1
+++ Net2/sys/chio.h	2018/04/24 18:16:45	1.1.1.2
@@ -30,25 +30,20 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- *	@(#)chio.h	7.6 (Berkeley) 2/5/91
- *
- * PATCHES MAGIC                LEVEL   PATCH THAT GOT US HERE
- * --------------------         -----   ----------------------
- * CURRENT PATCH LEVEL:         1       00098
- * --------------------         -----   ----------------------
- *
- * 16 Feb 93	Julian Elischer		ADDED for SCSI system
+ *	from: @(#)mtio.h	7.6 (Berkeley) 2/5/91
+ *	chio.h,v 1.3 1993/05/20 16:21:55 cgd Exp
  */
 
-/* This is a "convertet" mtio.h from 386BSD 
+/* This is a "converted" mtio.h from 386BSD 
    Stefan Grefen grefen@goofy.zdv.uni-mainz.de 
  */
 
+#ifndef _SYS_CHIO_H_
+#define _SYS_CHIO_H_
+
 /*
  * Structures and definitions for changer io control commands
  */
-#ifndef _CHIO_H_
-#define _CHIO_H_
 
 #define CH_INVERT		0x10000
 #define CH_ADDR_MASK		0xffff
@@ -124,4 +119,5 @@ struct chop {
 
 /* Changer IO control command */
 #define	CHIOOP	_IOWR('c', 1, struct chop)	/* do a mag tape op */
-#endif
+
+#endif /* !_SYS_CHIO_H_ */