Merge "net: sched: gracefully handle qdisc which don't support change()" (1365581f) · Commits · e / devices / android_kernel_xiaomi_markw

net/sched/sch_api.c

+11 −4

Original line number	Diff line number	Diff line
		@@ -1184,10 +1184,17 @@ tc_qdisc_flow_control(struct net_device *dev, u32 tcm_handle, int enable_flow)
		q = qdisc_lookup(dev, tcm_handle);

		/* call registered change function */
		if (q) {
		if (likely(q && q->ops)) {
		if (likely(q->ops->change)) {
		qdisc_len = q->q.qlen;
		if (q->ops->change(q, &(req.attr)) != 0)
		pr_err("tc_qdisc_flow_control: qdisc change failed");
		if (q->ops->change(q, &req.attr) != 0)
		pr_err("%s(): qdisc change failed", __func__);
		} else {
		WARN_ONCE(1, "%s(): called on queue which does %s",
		__func__, "not support change() operation");
		}
		} else {
		WARN_ONCE(1, "%s(): called on bad queue", __func__);
		}
		return qdisc_len;
		}