[src/trunk]: src/sys/arch/xen/include protect header against recursive include

[cherry <cherry%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/6a81e76416f8
branches:  trunk
changeset: 357291:6a81e76416f8
user:      cherry <cherry%NetBSD.org@localhost>
date:      Sat Nov 04 09:31:08 2017 +0000

description:
protect header against recursive include

diffstat:

 sys/arch/xen/include/i82093var.h |  7 ++++++-
 1 files changed, 6 insertions(+), 1 deletions(-)

diffs (18 lines):

diff -r 29489fe3976e -r 6a81e76416f8 sys/arch/xen/include/i82093var.h
--- a/sys/arch/xen/include/i82093var.h  Sat Nov 04 09:22:16 2017 +0000
+++ b/sys/arch/xen/include/i82093var.h  Sat Nov 04 09:31:08 2017 +0000
@@ -1,4 +1,7 @@
-/*      $NetBSD: i82093var.h,v 1.4 2010/03/22 16:43:08 cegger Exp $ */
+/*      $NetBSD: i82093var.h,v 1.5 2017/11/04 09:31:08 cherry Exp $ */
+
+#ifndef _XEN_I82093VAR_H_
+#define _XEN_I82093VAR_H_
 
 #include "opt_xen.h"
 #define _IOAPIC_CUSTOM_RW
@@ -36,3 +39,5 @@
        if (ret)
                printf("PHYSDEVOP_APIC_WRITE ret %d\n", ret);
 }
+
+#endif /* !_XEN_I82093VAR_H_ */