[PATCH] uml: fork cleanup

Fix the do_fork calling convention: normal arch pass the regs and the new sp
value to do_fork instead of NULL.

Currently the arch-independent code ignores these values, while the UML code
(actually it's copy_thread) gets the right values by itself.

With this patch, things are fixed up.

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

1 files changed, 3 insertions, 14 deletions

diff --git a/arch/um/kernel/tt/process_kern.c b/arch/um/kernel/tt/process_kern.c
index 776310fd5b8b..a189a2b92935 100644
--- a/arch/um/kernel/tt/process_kern.c
+++ b/arch/um/kernel/tt/process_kern.c
@@ -266,10 +266,10 @@ int copy_thread_tt(int nr, unsigned long clone_flags, unsigned long sp,
         }
 
         if(current->thread.forking){
-                sc_to_sc(UPT_SC(&p->thread.regs.regs), 
-                         UPT_SC(&current->thread.regs.regs));
+                sc_to_sc(UPT_SC(&p->thread.regs.regs), UPT_SC(&regs->regs));
                 SC_SET_SYSCALL_RETURN(UPT_SC(&p->thread.regs.regs), 0);
-                if(sp != 0) SC_SP(UPT_SC(&p->thread.regs.regs)) = sp;
+                if(sp != 0)
+                        SC_SP(UPT_SC(&p->thread.regs.regs)) = sp;
         }
         p->thread.mode.tt.extern_pid = new_pid;
 
@@ -459,14 +459,3 @@ int is_valid_pid(int pid)
         read_unlock(&tasklist_lock);
         return(0);
 }
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only.  This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */