netdev - [PATCH v2] net: socket: suppress unused warning

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Date:   Fri, 10 Mar 2023 23:18:51 +0100
From:   Vincenzo Palazzo <vincenzopalazzodev@...il.com>
To:     netdev@...r.kernel.org
Cc:     edumazet@...gle.com, kuba@...nel.org, pabeni@...hat.com,
        davem@...emloft.net, kuniyu@...zon.com,
        Vincenzo Palazzo <vincenzopalazzodev@...il.com>
Subject: [PATCH v2] net: socket: suppress unused warning

suppress unused warnings and fix the error that there is
with the W=1 enabled.

Warning generated

net/socket.c: In function ‘__sys_getsockopt’:
net/socket.c:2300:13: error: variable ‘max_optlen’ set but not used [-Werror=unused-but-set-variable]
 2300 |         int max_optlen;

Signed-off-by: Vincenzo Palazzo <vincenzopalazzodev@...il.com>
---
 net/socket.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/socket.c b/net/socket.c
index 6bae8ce7059e..ad081c9b429f 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -2295,9 +2295,9 @@ INDIRECT_CALLABLE_DECLARE(bool tcp_bpf_bypass_getsockopt(int level,
 int __sys_getsockopt(int fd, int level, int optname, char __user *optval,
 		int __user *optlen)
 {
+	int max_optlen __maybe_unused;
 	int err, fput_needed;
 	struct socket *sock;
-	int max_optlen;
 
 	sock = sockfd_lookup_light(fd, &err, &fput_needed);
 	if (!sock)
-- 
2.39.2