tipc: remove the unnecessary msg->req check from tipc_nl_compat_bearer_set

tipc_nl_compat_bearer_set() is only called by tipc_nl_compat_link_set()
which already does the check for msg->req check, so remove it from
tipc_nl_compat_bearer_set(), and do the same in tipc_nl_compat_media_set().
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/tipc/netlink_compat.c

@@ -683,7 +683,6 @@ static int tipc_nl_compat_media_set(struct sk_buff *skb,
 	struct nlattr *prop;
 	struct nlattr *media;
 	struct tipc_link_config *lc;
-	int len;
 
 	lc = (struct tipc_link_config *)TLV_DATA(msg->req);
 
@@ -691,10 +690,6 @@ static int tipc_nl_compat_media_set(struct sk_buff *skb,
 	if (!media)
 		return -EMSGSIZE;
 
-	len = min_t(int, TLV_GET_DATA_LEN(msg->req), TIPC_MAX_MEDIA_NAME);
-	if (!string_is_valid(lc->name, len))
-		return -EINVAL;
-
 	if (nla_put_string(skb, TIPC_NLA_MEDIA_NAME, lc->name))
 		return -EMSGSIZE;
 
@@ -715,7 +710,6 @@ static int tipc_nl_compat_bearer_set(struct sk_buff *skb,
 	struct nlattr *prop;
 	struct nlattr *bearer;
 	struct tipc_link_config *lc;
-	int len;
 
 	lc = (struct tipc_link_config *)TLV_DATA(msg->req);
 
@@ -723,10 +717,6 @@ static int tipc_nl_compat_bearer_set(struct sk_buff *skb,
 	if (!bearer)
 		return -EMSGSIZE;
 
-	len = min_t(int, TLV_GET_DATA_LEN(msg->req), TIPC_MAX_MEDIA_NAME);
-	if (!string_is_valid(lc->name, len))
-		return -EINVAL;
-
 	if (nla_put_string(skb, TIPC_NLA_BEARER_NAME, lc->name))
 		return -EMSGSIZE;