[PKT_SCHED]: Fix datalen check in tcf_simp_init().

datalen is unsigned so it can never be less than zero,
but that's ok because the attribute passed to nla_len()
has been validated and therefore a negative return
value is impossible.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/sched/act_simple.c b/net/sched/act_simple.c
index fbde461..64b2d13 100644 (file)
--- a/net/sched/act_simple.c
+++ b/net/sched/act_simple.c
@@ -115,7 +115,7 @@ static int tcf_simp_init(struct nlattr *nla, struct nlattr *est,
                return -EINVAL;
 
        datalen = nla_len(tb[TCA_DEF_DATA]);
-       if (datalen <= 0)
+       if (datalen == 0)
                return -EINVAL;
 
        pc = tcf_hash_check(parm->index, a, bind, &simp_hash_info);