From 2fead93f1097b39a1202402516e4ba5d991ab788 Mon Sep 17 00:00:00 2001
From: "Balazs Gerofi bgerofi@riken.jp" <bgerofi@kncc-login1.(none)>
Date: Mon, 19 May 2014 13:04:09 +0900
Subject: [PATCH] negative error code for ECHILD

---
 kernel/syscall.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/syscall.c b/kernel/syscall.c
index 682fdb08..b20ad197 100644
--- a/kernel/syscall.c
+++ b/kernel/syscall.c
@@ -306,7 +306,7 @@ rescan:
 
 	if (empty) {
 		ihk_mc_spinlock_unlock_noirq(&proc->ftn->lock);	
-		return ECHILD;
+		return -ECHILD;
 	}
 
 	if (child) {