[PATCH v3 net-next 04/10] net/sched: taprio: delete misleading comment about preallocating child qdiscs

Vladimir Oltean
2023-08-01T18:25:16Z

As mentioned in commit af7b29b1deaa ("Revert "net/sched: taprio: make
qdisc_leaf() see the per-netdev-queue pfifo child qdiscs"") - unlike
mqprio, taprio doesn't use q->qdiscs[] only as a temporary transport
between Qdisc_ops :: init() and Qdisc_ops :: attach().

Delete the comment, which is just stolen from mqprio, but there, the
usage patterns are a lot different, and this is nothing but confusing.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
---
v1->v3: none

net/sched/sch_taprio.c | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/net/sched/sch_taprio.c b/net/sched/sch_taprio.c
index c9ad585b5dc7..06397300b40e 100644
--- a/net/sched/sch_taprio.c
+++ b/net/sched/sch_taprio.c
@@ -2088,11 +2088,8 @@ static int taprio_init(struct Qdisc *sch, struct nlattr *opt,
return -EOPNOTSUPP;
}

- /* pre-allocate qdisc, attachment can't fail */
- q->qdiscs = kcalloc(dev->num_tx_queues,
- sizeof(q->qdiscs[0]),
+ q->qdiscs = kcalloc(dev->num_tx_queues, sizeof(q->qdiscs[0]),
GFP_KERNEL);
-
if (!q->qdiscs)
return -ENOMEM;

--
2.34.1