[PATCH net-next] net: sched: remove the unused return value of unregister_qdisc

From: Zhengchao Shao <shaozhengchao@huawei.com>
To: <netdev@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
	<jhs@mojatatu.com>, <xiyou.wangcong@gmail.com>,
	<jiri@resnulli.us>, <davem@davemloft.net>, <edumazet@google.com>,
	<kuba@kernel.org>, <pabeni@redhat.com>
Cc: <weiyongjun1@huawei.com>, <yuehaibing@huawei.com>,
	<shaozhengchao@huawei.com>
Subject: [PATCH net-next] net: sched: remove the unused return value of unregister_qdisc
Date: Mon, 15 Aug 2022 11:04:17 +0800	[thread overview]
Message-ID: <20220815030417.271894-1-shaozhengchao@huawei.com> (raw)

Return value of unregister_qdisc is unused, remove it.

Signed-off-by: Zhengchao Shao <shaozhengchao@huawei.com>
---
 include/net/pkt_sched.h | 2 +-
 net/sched/sch_api.c     | 5 +++--
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/include/net/pkt_sched.h b/include/net/pkt_sched.h
index 3372a1f67cf4..29f65632ebc5 100644
--- a/include/net/pkt_sched.h
+++ b/include/net/pkt_sched.h
@@ -100,7 +100,7 @@ struct Qdisc *fifo_create_dflt(struct Qdisc *sch, struct Qdisc_ops *ops,
 			       struct netlink_ext_ack *extack);
 
 int register_qdisc(struct Qdisc_ops *qops);
-int unregister_qdisc(struct Qdisc_ops *qops);
+void unregister_qdisc(struct Qdisc_ops *qops);
 void qdisc_get_default(char *id, size_t len);
 int qdisc_set_default(const char *id);
 
diff --git a/net/sched/sch_api.c b/net/sched/sch_api.c
index bf87b50837a8..8b4d575a3bbd 100644
--- a/net/sched/sch_api.c
+++ b/net/sched/sch_api.c
@@ -171,7 +171,7 @@ int register_qdisc(struct Qdisc_ops *qops)
 }
 EXPORT_SYMBOL(register_qdisc);
 
-int unregister_qdisc(struct Qdisc_ops *qops)
+void unregister_qdisc(struct Qdisc_ops *qops)
 {
 	struct Qdisc_ops *q, **qp;
 	int err = -ENOENT;
@@ -186,7 +186,8 @@ int unregister_qdisc(struct Qdisc_ops *qops)
 		err = 0;
 	}
 	write_unlock(&qdisc_mod_lock);
-	return err;
+
+	WARN(err, "unregister qdisc(%s) failed\n", qops->id);
 }
 EXPORT_SYMBOL(unregister_qdisc);
 
-- 
2.17.1

