UAPI: Fix the guards on various asm/unistd.h files

asm-generic/unistd.h and a number of asm/unistd.h files have been given
reinclusion guards that allow the guard to be overridden if __SYSCALL is
defined.  Unfortunately, these files define __SYSCALL and don't undefine it
when they've finished with it, thus rendering the guard ineffective.

The reason for this override is to allow the file to be #included multiple
times with different settings on __SYSCALL for purposes like generating syscall
tables.

The following guards are problematic:

arch/arm64/include/asm/unistd.h:#if !defined(__ASM_UNISTD_H) || defined(__SYSCALL)
arch/arm64/include/asm/unistd32.h:#if !defined(__ASM_UNISTD32_H) || defined(__SYSCALL)
arch/c6x/include/asm/unistd.h:#if !defined(_ASM_C6X_UNISTD_H) || defined(__SYSCALL)
arch/hexagon/include/asm/unistd.h:#if !defined(_ASM_HEXAGON_UNISTD_H) || defined(__SYSCALL)
arch/openrisc/include/asm/unistd.h:#if !defined(__ASM_OPENRISC_UNISTD_H) || defined(__SYSCALL)
arch/score/include/asm/unistd.h:#if !defined(_ASM_SCORE_UNISTD_H) || defined(__SYSCALL)
arch/tile/include/asm/unistd.h:#if !defined(_ASM_TILE_UNISTD_H) || defined(__SYSCALL)
arch/unicore32/include/asm/unistd.h:#if !defined(__UNICORE_UNISTD_H__) || defined(__SYSCALL)
include/asm-generic/unistd.h:#if !defined(_ASM_GENERIC_UNISTD_H) || defined(__SYSCALL)

On the assumption that the guards' ineffectiveness has passed unnoticed, just
remove these guards entirely.

Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>

1 files changed, 0 insertions, 5 deletions

diff --git a/arch/hexagon/include/asm/unistd.h b/arch/hexagon/include/asm/unistd.h
index 4d0ecde3665f..c0d5565030ae 100644
--- a/arch/hexagon/include/asm/unistd.h
+++ b/arch/hexagon/include/asm/unistd.h
@@ -18,9 +18,6 @@
  * 02110-1301, USA.
  */
 
-#if !defined(_ASM_HEXAGON_UNISTD_H) || defined(__SYSCALL)
-#define _ASM_HEXAGON_UNISTD_H
-
 /*
  *  The kernel pulls this unistd.h in three different ways:
  *  1.  the "normal" way which gets all the __NR defines
@@ -32,5 +29,3 @@
 #define sys_mmap2 sys_mmap_pgoff
 
 #include <asm-generic/unistd.h>
-
-#endif