kernel: delete Linux 5.4 config and patches

As the upcoming release will be based on Linux 5.10 only, remove all
kernel configuration as well as patches for Linux 5.4.
There were no targets still actively using Linux 5.4.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
(cherry picked from commit 3a14580411adfb75f9a44eded9f41245b9e44606)

1 files changed, 0 insertions, 86 deletions

diff --git a/target/linux/generic/pending-5.4/620-net_sched-codel-do-not-defer-queue-length-update.patch b/target/linux/generic/pending-5.4/620-net_sched-codel-do-not-defer-queue-length-update.patch
deleted file mode 100644
index ca85b8a98c..0000000000
--- a/target/linux/generic/pending-5.4/620-net_sched-codel-do-not-defer-queue-length-update.patch
+++ /dev/null
@@ -1,86 +0,0 @@
-From: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
-Date: Mon, 21 Aug 2017 11:14:14 +0300
-Subject: [PATCH] net_sched/codel: do not defer queue length update
-
-When codel wants to drop last packet in ->dequeue() it cannot call
-qdisc_tree_reduce_backlog() right away - it will notify parent qdisc
-about zero qlen and HTB/HFSC will deactivate class. The same class will
-be deactivated second time by caller of ->dequeue(). Currently codel and
-fq_codel defer update. This triggers warning in HFSC when it's qlen != 0
-but there is no active classes.
-
-This patch update parent queue length immediately: just temporary increase
-qlen around qdisc_tree_reduce_backlog() to prevent first class deactivation
-if we have skb to return.
-
-This might open another problem in HFSC - now operation peek could fail and
-deactivate parent class.
-
-Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
-Link: https://bugzilla.kernel.org/show_bug.cgi?id=109581
----
-
---- a/net/sched/sch_codel.c
-+++ b/net/sched/sch_codel.c
-@@ -95,11 +95,17 @@ static struct sk_buff *codel_qdisc_deque
- 			    &q->stats, qdisc_pkt_len, codel_get_enqueue_time,
- 			    drop_func, dequeue_func);
- 
--	/* We cant call qdisc_tree_reduce_backlog() if our qlen is 0,
--	 * or HTB crashes. Defer it for next round.
-+	/* If our qlen is 0 qdisc_tree_reduce_backlog() will deactivate
-+	 * parent class, dequeue in parent qdisc will do the same if we
-+	 * return skb. Temporary increment qlen if we have skb.
- 	 */
--	if (q->stats.drop_count && sch->q.qlen) {
--		qdisc_tree_reduce_backlog(sch, q->stats.drop_count, q->stats.drop_len);
-+	if (q->stats.drop_count) {
-+		if (skb)
-+			sch->q.qlen++;
-+		qdisc_tree_reduce_backlog(sch, q->stats.drop_count,
-+					  q->stats.drop_len);
-+		if (skb)
-+			sch->q.qlen--;
- 		q->stats.drop_count = 0;
- 		q->stats.drop_len = 0;
- 	}
---- a/net/sched/sch_fq_codel.c
-+++ b/net/sched/sch_fq_codel.c
-@@ -305,6 +305,21 @@ begin:
- 			    &flow->cvars, &q->cstats, qdisc_pkt_len,
- 			    codel_get_enqueue_time, drop_func, dequeue_func);
- 
-+	/* If our qlen is 0 qdisc_tree_reduce_backlog() will deactivate
-+	 * parent class, dequeue in parent qdisc will do the same if we
-+	 * return skb. Temporary increment qlen if we have skb.
-+	 */
-+	if (q->cstats.drop_count) {
-+		if (skb)
-+			sch->q.qlen++;
-+		qdisc_tree_reduce_backlog(sch, q->cstats.drop_count,
-+					  q->cstats.drop_len);
-+		if (skb)
-+			sch->q.qlen--;
-+		q->cstats.drop_count = 0;
-+		q->cstats.drop_len = 0;
-+	}
-+
- 	if (!skb) {
- 		/* force a pass through old_flows to prevent starvation */
- 		if ((head == &q->new_flows) && !list_empty(&q->old_flows))
-@@ -315,15 +330,6 @@ begin:
- 	}
- 	qdisc_bstats_update(sch, skb);
- 	flow->deficit -= qdisc_pkt_len(skb);
--	/* We cant call qdisc_tree_reduce_backlog() if our qlen is 0,
--	 * or HTB crashes. Defer it for next round.
--	 */
--	if (q->cstats.drop_count && sch->q.qlen) {
--		qdisc_tree_reduce_backlog(sch, q->cstats.drop_count,
--					  q->cstats.drop_len);
--		q->cstats.drop_count = 0;
--		q->cstats.drop_len = 0;
--	}
- 	return skb;
- }
-