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authorChris Zankel <chris@zankel.net>2012-10-23 20:17:05 -0700
committerChris Zankel <chris@zankel.net>2012-10-25 14:53:36 -0700
commit2f72d4f6a29cf84c40fc05c76020b347b4774393 (patch)
tree3877c9fdac29b33d2beaab2c58c36a0d6f7649ca /arch/xtensa/include/asm/unistd.h
parent6f0c0580b70c89094b3422ba81118c7b959c7556 (diff)
xtensa: allow multi-inclusion for uapi/unistd.h
Xtensa implements a method that allows to generate a arbitrary output for each system call by defining the __SYSCALL(number, function, num_args). This usually requires to include uapi/unistd.h twice. Instead of removing the guard agains multiple inclusion entirely, allow to include unistd.h again only if __SYSCALL is defined. Note that __SYSCALL gets always undefined at the end of the file. Signed-off-by: Chris Zankel <chris@zankel.net>
Diffstat (limited to 'arch/xtensa/include/asm/unistd.h')
-rw-r--r--arch/xtensa/include/asm/unistd.h14
1 files changed, 4 insertions, 10 deletions
diff --git a/arch/xtensa/include/asm/unistd.h b/arch/xtensa/include/asm/unistd.h
index 9ef1c31d2c8..d9fa52dbfba 100644
--- a/arch/xtensa/include/asm/unistd.h
+++ b/arch/xtensa/include/asm/unistd.h
@@ -1,16 +1,8 @@
-/*
- * include/asm-xtensa/unistd.h
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 2001 - 2005 Tensilica Inc.
- */
+#ifndef _XTENSA_UNISTD_H
+#define _XTENSA_UNISTD_H
#include <uapi/asm/unistd.h>
-
/*
* "Conditional" syscalls
*
@@ -37,3 +29,5 @@
#define __IGNORE_mmap /* use mmap2 */
#define __IGNORE_vfork /* use clone */
#define __IGNORE_fadvise64 /* use fadvise64_64 */
+
+#endif /* _XTENSA_UNISTD_H */