[patch] compat: return -EFAULT on error in waitid()

From: Dan Carpenter
Date: Fri Jan 04 2013 - 13:55:07 EST

The copy_to_user() call returns the number of bytes remaining but we
want to return -EFAULT on error.

Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Only needed in linux-next.

diff --git a/kernel/compat.c b/kernel/compat.c
index de6f324..19971d8 100644
--- a/kernel/compat.c
+++ b/kernel/compat.c
@@ -593,7 +593,7 @@ COMPAT_SYSCALL_DEFINE5(waitid,
ret = put_compat_rusage(&ru, uru);
if (ret)
- return ret;
+ return -EFAULT;

BUG_ON(info.si_code & __SI_MASK);
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