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mptcp: return 0 instead of 'err' var

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When 'err' is 0, it looks clearer to return '0' instead of the variable
called 'err'.

The behaviour is then not modified, just a clearer code.

By doing this, we can also avoid false positive smatch warnings like
this one:

  net/mptcp/pm_netlink.c:1169 mptcp_pm_parse_pm_addr_attr() warn: missing error code? 'err'

Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <error27@gmail.com>
Suggested-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Matthieu Baerts 2022-12-08 16:44:31 -08:00 committed by Jakub Kicinski
parent 8b34b52c17
commit 03e7d28cd2
2 changed files with 3 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
net/mptcp/pm_netlink.c
View file

@ -1190,7 +1190,7 @@ static int mptcp_pm_parse_pm_addr_attr(struct nlattr *tb[],
if (!tb[MPTCP_PM_ADDR_ATTR_FAMILY]) {
if (!require_family)
return err;
return 0;
NL_SET_ERR_MSG_ATTR(info->extack, attr,
"missing family");
@ -1224,7 +1224,7 @@ static int mptcp_pm_parse_pm_addr_attr(struct nlattr *tb[],
if (tb[MPTCP_PM_ADDR_ATTR_PORT])
addr->port = htons(nla_get_u16(tb[MPTCP_PM_ADDR_ATTR_PORT]));
return err;
return 0;
}
int mptcp_pm_parse_addr(struct nlattr *attr, struct genl_info *info,

2
net/mptcp/sockopt.c
View file

@ -740,7 +740,7 @@ static int mptcp_setsockopt_v4_set_tos(struct mptcp_sock *msk, int optname,
}
release_sock(sk);
return err;
return 0;
}
static int mptcp_setsockopt_v4(struct mptcp_sock *msk, int optname,