[PATCH] bpf: hide a possibly unused variable

[Arnd Bergmann]

The only user of this variable is inside of an #ifdef, causing
a warning without CONFIG_INET:

net/core/filter.c: In function '____bpf_sock_ops_cb_flags_set':
net/core/filter.c:3382:6: error: unused variable 'val' [-Werror=unused-variable]
  int val = argval & BPF_SOCK_OPS_ALL_CB_FLAGS;

This adds the same #ifdef around the declaration.

Fixes: b13d88072172 ("bpf: Adds field bpf_sock_ops_cb_flags to tcp_sock")
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
---
 net/core/filter.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/net/core/filter.c b/net/core/filter.c
index 08ab4c65a998..c3dc6d60b4bb 100644
--- a/net/core/filter.c
+++ b/net/core/filter.c
@@ -3379,7 +3379,9 @@ BPF_CALL_2(bpf_sock_ops_cb_flags_set, struct bpf_sock_ops_kern *, bpf_sock,
 	   int, argval)
 {
 	struct sock *sk = bpf_sock->sk;
+#ifdef CONFIG_INET
 	int val = argval & BPF_SOCK_OPS_ALL_CB_FLAGS;
+#endif
 
 	if (!sk_fullsock(sk))
 		return -EINVAL;
-- 
2.9.0