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ipv6: fib: hide unused 'pn' variable
author
Arnd Bergmann
<arnd@arndb.de>
Mon, 8 Apr 2024 07:42:02 +0000
(09:42 +0200)
committer
Greg Kroah-Hartman
<gregkh@linuxfoundation.org>
Wed, 17 Apr 2024 09:15:14 +0000
(11:15 +0200)
[ Upstream commit
74043489fcb5e5ca4074133582b5b8011b67f9e7
]
When CONFIG_IPV6_SUBTREES is disabled, the only user is hidden, causing
a 'make W=1' warning:
net/ipv6/ip6_fib.c: In function 'fib6_add':
net/ipv6/ip6_fib.c:1388:32: error: variable 'pn' set but not used [-Werror=unused-but-set-variable]
Add another #ifdef around the variable declaration, matching the other
uses in this file.
Fixes: 66729e18df08 ("[IPV6] ROUTE: Make sure we have fn->leaf when adding a node on subtree.")
Link:
https://lore.kernel.org/netdev/20240322131746.904943-1-arnd@kernel.org/
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Link:
https://lore.kernel.org/r/20240408074219.3030256-1-arnd@kernel.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
net/ipv6/ip6_fib.c
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diff --git
a/net/ipv6/ip6_fib.c
b/net/ipv6/ip6_fib.c
index bbb9ed6d1ae6fa0dbd754dc9d0d3e18ba3820054..c0ff5ee490e7bd7a0394642f6f0dfd39dc4129ed 100644
(file)
--- a/
net/ipv6/ip6_fib.c
+++ b/
net/ipv6/ip6_fib.c
@@
-1375,7
+1375,10
@@
int fib6_add(struct fib6_node *root, struct fib6_info *rt,
struct nl_info *info, struct netlink_ext_ack *extack)
{
struct fib6_table *table = rt->fib6_table;
- struct fib6_node *fn, *pn = NULL;
+ struct fib6_node *fn;
+#ifdef CONFIG_IPV6_SUBTREES
+ struct fib6_node *pn = NULL;
+#endif
int err = -ENOMEM;
int allow_create = 1;
int replace_required = 0;
@@
-1399,9
+1402,9
@@
int fib6_add(struct fib6_node *root, struct fib6_info *rt,
goto out;
}
+#ifdef CONFIG_IPV6_SUBTREES
pn = fn;
-#ifdef CONFIG_IPV6_SUBTREES
if (rt->fib6_src.plen) {
struct fib6_node *sn;