[PATCH 4.20 057/171] apparmor: Fix warning about unused function apparmor_ipv6_postroute

[Greg Kroah-Hartman]

4.20-stable review patch.  If anyone has any objections, please let me know.

------------------

[ Upstream commit a1a02062ad466052a34a8c4323143ccf9726eb52 ]

when compiled without CONFIG_IPV6:
security/apparmor/lsm.c:1601:21: warning: âapparmor_ipv6_postrouteâ defined but not used [-Wunused-function]
 static unsigned int apparmor_ipv6_postroute(void *priv,
                     ^~~~~~~~~~~~~~~~~~~~~~~

Reported-by: Jordan Glover <Golden_Miller83@xxxxxxxxxxxxx>
Tested-by: Jordan Glover <Golden_Miller83@xxxxxxxxxxxxx>
Signed-off-by: Petr Vorel <pvorel@xxxxxxx>
Signed-off-by: John Johansen <john.johansen@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 security/apparmor/lsm.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/security/apparmor/lsm.c b/security/apparmor/lsm.c
index 42446a216f3b..7d1eeb084968 100644
--- a/security/apparmor/lsm.c
+++ b/security/apparmor/lsm.c
@@ -1598,12 +1598,14 @@ static unsigned int apparmor_ipv4_postroute(void *priv,
 	return apparmor_ip_postroute(priv, skb, state);
 }
 
+#if IS_ENABLED(CONFIG_IPV6)
 static unsigned int apparmor_ipv6_postroute(void *priv,
 					    struct sk_buff *skb,
 					    const struct nf_hook_state *state)
 {
 	return apparmor_ip_postroute(priv, skb, state);
 }
+#endif
 
 static const struct nf_hook_ops apparmor_nf_ops[] = {
 	{
-- 
2.19.1