[PATCH] xfrm_user: fix return value from xfrm_user_rcv_msg

[Yi Zhao]

It doesn't support to run 32bit 'ip' to set xfrm objdect on 64bit host.
But the return value is unknown for user program:

ip xfrm policy list
RTNETLINK answers: Unknown error 524

Replace ENOTSUPP with EOPNOTSUPP:

ip xfrm policy list
RTNETLINK answers: Operation not supported

Signed-off-by: Yi Zhao <yi.z...@windriver.com>
---
 net/xfrm/xfrm_user.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c
index 0889209..671a1d0 100644
--- a/net/xfrm/xfrm_user.c
+++ b/net/xfrm/xfrm_user.c
@@ -2450,7 +2450,7 @@ static int xfrm_user_rcv_msg(struct sk_buff *skb, struct 
nlmsghdr *nlh)
 
 #ifdef CONFIG_COMPAT
        if (in_compat_syscall())
-               return -ENOTSUPP;
+               return -EOPNOTSUPP;
 #endif
 
        type = nlh->nlmsg_type;
-- 
2.7.4