[NET_SCHED]: Propagate nla_parse return value

nla_parse() returns more detailed errno codes, propagate them back on
error.

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

1 files changed, 6 insertions, 3 deletions

diff --git a/net/sched/sch_prio.c b/net/sched/sch_prio.c
index a4f932df86e9..4aa2b45dad0a 100644
--- a/net/sched/sch_prio.c
+++ b/net/sched/sch_prio.c
@@ -229,11 +229,14 @@ static int prio_tune(struct Qdisc *sch, struct nlattr *opt)
         struct prio_sched_data *q = qdisc_priv(sch);
         struct tc_prio_qopt *qopt;
         struct nlattr *tb[TCA_PRIO_MAX + 1];
+        int err;
         int i;
 
-        if (nla_parse_nested_compat(tb, TCA_PRIO_MAX, opt, NULL, qopt,
-                                    sizeof(*qopt)))
-                return -EINVAL;
+        err = nla_parse_nested_compat(tb, TCA_PRIO_MAX, opt, NULL, qopt,
+                                      sizeof(*qopt));
+        if (err < 0)
+                return err;
+
         q->bands = qopt->bands;
         /* If we're multiqueue, make sure the number of incoming bands
          * matches the number of queues on the device we're associating with.