linux-kernel - [PATCH 12/30] net: netrom: Add missing annotation for nr_neigh

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Message-Id: <20200223231711.157699-13-jbi.octave@gmail.com>
Date:   Sun, 23 Feb 2020 23:16:53 +0000
From:   Jules Irenge <jbi.octave@...il.com>
To:     boqun.feng@...il.com
Cc:     jbi.octave@...il.com, linux-kernel@...r.kernel.org,
        Ralf Baechle <ralf@...ux-mips.org>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        linux-hams@...r.kernel.org (open list:NETROM NETWORK LAYER),
        netdev@...r.kernel.org (open list:NETWORKING [GENERAL])
Subject: [PATCH 12/30] net: netrom: Add missing annotation for nr_neigh_start()

Sparse reports a warning at nr_neigh_start()
warning: context imbalance in nr_neigh_start() - wrong count at exit
The root cause is the missing annotation at nr_neigh_start()
Add the missing __acquires(&nr_neigh_list_lock) annotation

Signed-off-by: Jules Irenge <jbi.octave@...il.com>
---
 net/netrom/nr_route.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/net/netrom/nr_route.c b/net/netrom/nr_route.c
index 637a743c060d..33e7b91fc805 100644
--- a/net/netrom/nr_route.c
+++ b/net/netrom/nr_route.c
@@ -895,6 +895,7 @@ const struct seq_operations nr_node_seqops = {
 };
 
 static void *nr_neigh_start(struct seq_file *seq, loff_t *pos)
+	__acquires(&nr_neigh_list_lock)
 {
 	spin_lock_bh(&nr_neigh_list_lock);
 	return seq_hlist_start_head(&nr_neigh_list, *pos);
-- 
2.24.1