From: Colin Ian King <colin.king@canonical.com>
Date: Mon, 18 Sep 2017 12:40:38 +0100
Subject: net_sched: use explicit size of struct tcmsg, remove need to declare
 tcm
Patch-mainline: v4.15-rc1
Git-commit: 7e5dd53f6ee81ffa0d1f42f79e6440b6a751ab40
References: bsc#1109837

Pointer tcm is being initialized and is never read, it is only being used
to determine the size of struct tcmsg.  Clean this up by removing
variable tcm and explicitly using the sizeof struct tcmsg rather than *tcm.
Cleans up clang warning:

warning: Value stored to 'tcm' during its initialization is never read

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 net/sched/sch_api.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

--- a/net/sched/sch_api.c
+++ b/net/sched/sch_api.c
@@ -1502,7 +1502,6 @@ static int tc_dump_qdisc(struct sk_buff
 	int s_idx, s_q_idx;
 	struct net_device *dev;
 	const struct nlmsghdr *nlh = cb->nlh;
-	struct tcmsg *tcm = nlmsg_data(nlh);
 	struct nlattr *tca[TCA_MAX + 1];
 	int err;
 
@@ -1512,7 +1511,7 @@ static int tc_dump_qdisc(struct sk_buff
 	idx = 0;
 	ASSERT_RTNL();
 
-	err = nlmsg_parse(nlh, sizeof(*tcm), tca, TCA_MAX, NULL, NULL);
+	err = nlmsg_parse(nlh, sizeof(struct tcmsg), tca, TCA_MAX, NULL, NULL);
 	if (err < 0)
 		return err;