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, 88 deletions

diff --git a/target/linux/generic/backport-5.4/600-v5.12-net-extract-napi-poll-functionality-to-__napi_poll.patch b/target/linux/generic/backport-5.4/600-v5.12-net-extract-napi-poll-functionality-to-__napi_poll.patch
deleted file mode 100644
index 35aeb96251..0000000000
--- a/target/linux/generic/backport-5.4/600-v5.12-net-extract-napi-poll-functionality-to-__napi_poll.patch
+++ /dev/null
@@ -1,88 +0,0 @@
-From: Felix Fietkau <nbd@nbd.name>
-Date: Mon, 8 Feb 2021 11:34:08 -0800
-Subject: [PATCH] net: extract napi poll functionality to __napi_poll()
-
-This commit introduces a new function __napi_poll() which does the main
-logic of the existing napi_poll() function, and will be called by other
-functions in later commits.
-This idea and implementation is done by Felix Fietkau <nbd@nbd.name> and
-is proposed as part of the patch to move napi work to work_queue
-context.
-This commit by itself is a code restructure.
-
-Signed-off-by: Felix Fietkau <nbd@nbd.name>
-Signed-off-by: Wei Wang <weiwan@google.com>
-Reviewed-by: Alexander Duyck <alexanderduyck@fb.com>
-Signed-off-by: David S. Miller <davem@davemloft.net>
----
-
---- a/net/core/dev.c
-+++ b/net/core/dev.c
-@@ -6325,15 +6325,10 @@ void netif_napi_del(struct napi_struct *
- }
- EXPORT_SYMBOL(netif_napi_del);
- 
--static int napi_poll(struct napi_struct *n, struct list_head *repoll)
-+static int __napi_poll(struct napi_struct *n, bool *repoll)
- {
--	void *have;
- 	int work, weight;
- 
--	list_del_init(&n->poll_list);
--
--	have = netpoll_poll_lock(n);
--
- 	weight = n->weight;
- 
- 	/* This NAPI_STATE_SCHED test is for avoiding a race
-@@ -6351,7 +6346,7 @@ static int napi_poll(struct napi_struct
- 	WARN_ON_ONCE(work > weight);
- 
- 	if (likely(work < weight))
--		goto out_unlock;
-+		return work;
- 
- 	/* Drivers must not modify the NAPI state if they
- 	 * consume the entire weight.  In such cases this code
-@@ -6360,7 +6355,7 @@ static int napi_poll(struct napi_struct
- 	 */
- 	if (unlikely(napi_disable_pending(n))) {
- 		napi_complete(n);
--		goto out_unlock;
-+		return work;
- 	}
- 
- 	if (n->gro_bitmask) {
-@@ -6378,12 +6373,29 @@ static int napi_poll(struct napi_struct
- 	if (unlikely(!list_empty(&n->poll_list))) {
- 		pr_warn_once("%s: Budget exhausted after napi rescheduled\n",
- 			     n->dev ? n->dev->name : "backlog");
--		goto out_unlock;
-+		return work;
- 	}
- 
--	list_add_tail(&n->poll_list, repoll);
-+	*repoll = true;
-+
-+	return work;
-+}
-+
-+static int napi_poll(struct napi_struct *n, struct list_head *repoll)
-+{
-+	bool do_repoll = false;
-+	void *have;
-+	int work;
-+
-+	list_del_init(&n->poll_list);
-+
-+	have = netpoll_poll_lock(n);
-+
-+	work = __napi_poll(n, &do_repoll);
-+
-+	if (do_repoll)
-+		list_add_tail(&n->poll_list, repoll);
- 
--out_unlock:
- 	netpoll_poll_unlock(have);
- 
- 	return work;