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l2tp: fix return value check

In case of error, the function genlmsg_put() returns NULL pointer
not ERR_PTR(). The IS_ERR() test in the return value check should
be replaced with NULL test.

dpatch engine is used to auto generate this patch.
(https://github.com/weiyj/dpatch)

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
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1 parent 392b408 commit 7f8436a1269eaaf2d0b1054a325eddf4e14cb80d Wei Yongjun committed with davem330 Sep 24, 2012
Showing with 6 additions and 6 deletions.
  1. +6 −6 net/l2tp/l2tp_netlink.c
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@@ -80,8 +80,8 @@ static int l2tp_nl_cmd_noop(struct sk_buff *skb, struct genl_info *info)
hdr = genlmsg_put(msg, info->snd_pid, info->snd_seq,
&l2tp_nl_family, 0, L2TP_CMD_NOOP);
- if (IS_ERR(hdr)) {
- ret = PTR_ERR(hdr);
+ if (!hdr) {
+ ret = -EMSGSIZE;
goto err_out;
}
@@ -250,8 +250,8 @@ static int l2tp_nl_tunnel_send(struct sk_buff *skb, u32 pid, u32 seq, int flags,
hdr = genlmsg_put(skb, pid, seq, &l2tp_nl_family, flags,
L2TP_CMD_TUNNEL_GET);
- if (IS_ERR(hdr))
- return PTR_ERR(hdr);
+ if (!hdr)
+ return -EMSGSIZE;
if (nla_put_u8(skb, L2TP_ATTR_PROTO_VERSION, tunnel->version) ||
nla_put_u32(skb, L2TP_ATTR_CONN_ID, tunnel->tunnel_id) ||
@@ -617,8 +617,8 @@ static int l2tp_nl_session_send(struct sk_buff *skb, u32 pid, u32 seq, int flags
sk = tunnel->sock;
hdr = genlmsg_put(skb, pid, seq, &l2tp_nl_family, flags, L2TP_CMD_SESSION_GET);
- if (IS_ERR(hdr))
- return PTR_ERR(hdr);
+ if (!hdr)
+ return -EMSGSIZE;
if (nla_put_u32(skb, L2TP_ATTR_CONN_ID, tunnel->tunnel_id) ||
nla_put_u32(skb, L2TP_ATTR_SESSION_ID, session->session_id) ||

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