c6x: switch to saner kernel_execve() semantics

ACKed-by: Mark Salter <msalter@redhat.com>
Tested-by: Mark Salter <msalter@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

3 files changed, 2 insertions, 12 deletions

diff --git a/arch/c6x/Kconfig b/arch/c6x/Kconfig
index aee1b569ee6e..66eab3703c75 100644
--- a/arch/c6x/Kconfig
+++ b/arch/c6x/Kconfig
@@ -18,6 +18,7 @@ config C6X
         select OF_EARLY_FLATTREE
         select GENERIC_CLOCKEVENTS
         select GENERIC_KERNEL_THREAD
+        select GENERIC_KERNEL_EXECVE
         select MODULES_USE_ELF_RELA
 
 config MMU
diff --git a/arch/c6x/include/uapi/asm/unistd.h b/arch/c6x/include/uapi/asm/unistd.h
index 4ff747d12dad..625beafb9cd1 100644
--- a/arch/c6x/include/uapi/asm/unistd.h
+++ b/arch/c6x/include/uapi/asm/unistd.h
@@ -14,7 +14,6 @@
  *   more details.
  */
 
-#define __ARCH_WANT_KERNEL_EXECVE
 #define __ARCH_WANT_SYS_EXECVE
 
 /* Use the standard ABI for syscalls. */
diff --git a/arch/c6x/kernel/entry.S b/arch/c6x/kernel/entry.S
index 5449c36018fe..75f6f36472cf 100644
--- a/arch/c6x/kernel/entry.S
+++ b/arch/c6x/kernel/entry.S
@@ -413,19 +413,9 @@ ENTRY(ret_from_kernel_thread)
 0:
         B       .S2     B10                /* call fn */
         LDW     .D2T1   *+SP(REGS_A1+8),A4 /* get arg */
-        MVKL    .S2     sys_exit,B11
-        MVKH    .S2     sys_exit,B11
-        ADDKPC  .S2     0f,B3,1
-0:
-        BNOP    .S2     B11,5   /* jump to sys_exit */
+        ADDKPC  .S2     ret_from_fork_2,B3,3
 ENDPROC(ret_from_kernel_thread)
 
-ENTRY(ret_from_kernel_execve)
-        GET_THREAD_INFO A12
-        BNOP    .S2     syscall_exit,4
-        ADD     .D2X    A4,-8,SP
-ENDPROC(ret_from_kernel_execve)
-
         ;;
         ;; These are the interrupt handlers, responsible for calling __do_IRQ()
         ;; int6 is used for syscalls (see _system_call entry)