MIPS: Compat: Fix build error if CONFIG_MIPS32_COMPAT but no compat ABI.

In that case nor __NR_seccomp_*_32 symbols will be defined in
<asm/unistd.h> so the attempt to use it in kernel.seccomp.c will fail
with:

kernel/seccomp.c:565:2: error: '__NR_seccomp_read_32' undeclared here (not in a function)
  __NR_seccomp_read_32, __NR_seccomp_write_32, __NR_seccomp_exit_32, __NR_seccomp_sigreturn_32,
  ^
kernel/seccomp.c:565:24: error: '__NR_seccomp_write_32' undeclared here (not in a function)
  __NR_seccomp_read_32, __NR_seccomp_write_32, __NR_seccomp_exit_32, __NR_seccomp_sigreturn_32,
                        ^
kernel/seccomp.c:565:47: error: '__NR_seccomp_exit_32' undeclared here (not in a function)
  __NR_seccomp_read_32, __NR_seccomp_write_32, __NR_seccomp_exit_32, __NR_seccomp_sigreturn_32,
                                               ^
kernel/seccomp.c:565:69: error: '__NR_seccomp_sigreturn_32' undeclared here (not in a function)
  __NR_seccomp_read_32, __NR_seccomp_write_32, __NR_seccomp_exit_32, __NR_seccomp_sigreturn_32,

Solved by changing the compat ABIs in kconfig to select MIPS32_COMPAT
directly.  This also means the user no longer has to select MIPS32_COMPAT
before being able to see the ABI options.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 9 insertions, 12 deletions

diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 3289969ee423..f4d6616877f2 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -2656,27 +2656,21 @@ config TRAD_SIGNALS
         bool
 
 config MIPS32_COMPAT
-        bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
-        depends on 64BIT
-        help
-          Select this option if you want Linux/MIPS 32-bit binary
-          compatibility. Since all software available for Linux/MIPS is
-          currently 32-bit you should say Y here.
+        bool
 
 config COMPAT
         bool
-        depends on MIPS32_COMPAT
-        select ARCH_WANT_OLD_COMPAT_IPC
-        default y
 
 config SYSVIPC_COMPAT
         bool
-        depends on COMPAT && SYSVIPC
-        default y
 
 config MIPS32_O32
         bool "Kernel support for o32 binaries"
-        depends on MIPS32_COMPAT
+        depends on 64BIT
+        select ARCH_WANT_OLD_COMPAT_IPC
+        select COMPAT
+        select MIPS32_COMPAT
+        select SYSVIPC_COMPAT if SYSVIPC
         help
           Select this option if you want to run o32 binaries.  These are pure
           32-bit binaries as used by the 32-bit Linux/MIPS port.  Most of
@@ -2687,6 +2681,9 @@ config MIPS32_O32
 config MIPS32_N32
         bool "Kernel support for n32 binaries"
         depends on MIPS32_COMPAT
+        select COMPAT
+        select MIPS32_COMPAT
+        select SYSVIPC_COMPAT if SYSVIPC
         help
           Select this option if you want to run n32 binaries.  These are
           64-bit binaries using 32-bit quantities for addressing and certain