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l2tp: fix unused function warning

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Removing one of the callers of pppol2tp_session_get_sock caused a harmless
warning in some configurations:

net/l2tp/l2tp_ppp.c:142:21: 'pppol2tp_session_get_sock' defined but not used [-Wunused-function]

Rather than adding another #ifdef here, using a proper IS_ENABLED()
check makes the code more readable and avoids those warnings while
letting the compiler figure out for itself which code is needed.

This adds one pointer for the unused show() callback in struct
l2tp_session, but that seems harmless.

Fixes: b0e29063dc ("l2tp: remove pppol2tp_session_ioctl()")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Arnd Bergmann 2018-08-13 23:43:05 +02:00 committed by David S. Miller
parent 3d46eee5a5
commit c2ebc25674
3 changed files with 4 additions and 12 deletions
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2
net/l2tp/l2tp_core.h
View File

@ -118,9 +118,7 @@ struct l2tp_session {
int (*build_header)(struct l2tp_session *session, void *buf);
void (*recv_skb)(struct l2tp_session *session, struct sk_buff *skb, int data_len);
void (*session_close)(struct l2tp_session *session);
#if IS_ENABLED(CONFIG_L2TP_DEBUGFS)
void (*show)(struct seq_file *m, void *priv);
#endif
uint8_t priv[0]; /* private data */
};

7
net/l2tp/l2tp_eth.c
View File

@ -199,7 +199,6 @@ static void l2tp_eth_delete(struct l2tp_session *session)
}
}
#if IS_ENABLED(CONFIG_L2TP_DEBUGFS)
static void l2tp_eth_show(struct seq_file *m, void *arg)
{
struct l2tp_session *session = arg;
@ -219,7 +218,6 @@ static void l2tp_eth_show(struct seq_file *m, void *arg)
dev_put(dev);
}
#endif
static void l2tp_eth_adjust_mtu(struct l2tp_tunnel *tunnel,
struct l2tp_session *session,
@ -305,9 +303,8 @@ static int l2tp_eth_create(struct net *net, struct l2tp_tunnel *tunnel,
session->recv_skb = l2tp_eth_dev_recv;
session->session_close = l2tp_eth_delete;
#if IS_ENABLED(CONFIG_L2TP_DEBUGFS)
session->show = l2tp_eth_show;
#endif
if (IS_ENABLED(CONFIG_L2TP_DEBUGFS))
session->show = l2tp_eth_show;
spriv = l2tp_session_priv(session);

7
net/l2tp/l2tp_ppp.c
View File

@ -533,7 +533,6 @@ out:
return error;
}
#if IS_ENABLED(CONFIG_L2TP_DEBUGFS)
static void pppol2tp_show(struct seq_file *m, void *arg)
{
struct l2tp_session *session = arg;
@ -547,16 +546,14 @@ static void pppol2tp_show(struct seq_file *m, void *arg)
sock_put(sk);
}
}
#endif
static void pppol2tp_session_init(struct l2tp_session *session)
{
struct pppol2tp_session *ps;
session->recv_skb = pppol2tp_recv;
#if IS_ENABLED(CONFIG_L2TP_DEBUGFS)
session->show = pppol2tp_show;
#endif
if (IS_ENABLED(CONFIG_L2TP_DEBUGFS))
session->show = pppol2tp_show;
ps = l2tp_session_priv(session);
mutex_init(&ps->sk_lock);