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, 4 deletions

diff --git a/arch/c6x/include/asm/unistd.h b/arch/c6x/include/asm/unistd.h
index 6d54ea4262eb..ed2259043eec 100644
--- a/arch/c6x/include/asm/unistd.h
+++ b/arch/c6x/include/asm/unistd.h
@@ -13,8 +13,6 @@
  *   NON INFRINGEMENT.  See the GNU General Public License for
  *   more details.
  */
-#if !defined(_ASM_C6X_UNISTD_H) || defined(__SYSCALL)
-#define _ASM_C6X_UNISTD_H
 
 /* Use the standard ABI for syscalls. */
 #include <asm-generic/unistd.h>
@@ -22,5 +20,3 @@
 /* C6X-specific syscalls. */
 #define __NR_cache_sync (__NR_arch_specific_syscall + 0)
 __SYSCALL(__NR_cache_sync, sys_cache_sync)
-
-#endif /* _ASM_C6X_UNISTD_H */