[PATCH] uml: TT - SYSCALL_DEBUG - fix buglet introduced in cleanup

Fixes a bug introduced in commit e32dacb9f481fd6decb41adb28e720c923d34f54 -
index is initialized based on syscall before syscall is calculated.

I'm bothering with this mainly because it gives a correct warning when the
config option is enabled, even if the code is for a almost unused debugging
option.

Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Cc: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 6 insertions, 2 deletions

diff --git a/arch/um/kernel/tt/syscall_kern.c b/arch/um/kernel/tt/syscall_kern.c
index 3d29c90514cc..3fda9a03c59a 100644
--- a/arch/um/kernel/tt/syscall_kern.c
+++ b/arch/um/kernel/tt/syscall_kern.c
@@ -23,16 +23,20 @@ void syscall_handler_tt(int sig, struct pt_regs *regs)
         int syscall;
 #ifdef CONFIG_SYSCALL_DEBUG
         int index;
-        index = record_syscall_start(syscall);
 #endif
         sc = UPT_SC(&regs->regs);
         SC_START_SYSCALL(sc);
 
+        syscall = UPT_SYSCALL_NR(&regs->regs);
+
+#ifdef CONFIG_SYSCALL_DEBUG
+        index = record_syscall_start(syscall);
+#endif
+
         syscall_trace(&regs->regs, 0);
 
         current->thread.nsyscalls++;
         nsyscalls++;
-        syscall = UPT_SYSCALL_NR(&regs->regs);
 
         if((syscall >= NR_syscalls) || (syscall < 0))
                 result = -ENOSYS;