kernel: bump 5.15 to 5.15.115

Manually rebased:
	backport-5.15/603-v5.19-page_pool-Add-recycle-stats-to-page_pool_put_page_bu.patch
	pending-5.15/723-net-mt7531-ensure-all-MACs-are-powered-down-before-r.patch*

Removed upstreamed:
	generic-backport/610-v6.3-net-page_pool-use-in_softirq-instead.patch[1]
	backport-5.15/705-12-v6.0-net-dsa-mt7530-rework-mt753-01-_setup.patch[2]
	backport-5.15/790-v6.4-0010-net-dsa-mt7530-split-off-common-parts-from-mt7531_se.patch[3]
	backport-5.15/703-10-v5.16-net-dsa-introduce-helpers-for-iterating-through-port.patch[4]

All other patches automatically rebased.

* Modified to define the variable i as suggested by DragonBluep in PR discussion.
  See: https://github.com/openwrt/openwrt/pull/12823#issuecomment-1578518576

1. https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v5.15.115&id=3af319d5147454dc63665ef451229c674b538377
2. https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v5.15.115&id=0753c1ef24194580f7165ae6e259b59a851392f2
3. https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v5.15.115&id=5a7266feaa6d708fc6880a161786eaa884ef3c8e
4. https://github.com/gregkh/linux/commit/9902f91cf666124a6b50bbcf483b46ecb09ef408

Build system: x86_64
Build-tested: bcm2711/RPi4B, ramips/tplink_archer-a6-v3, filogic/xiaomi_redmi-router-ax6000-ubootmod
Run-tested: bcm2711/RPi4B, ramips/tplink_archer-a6-v3, filogic/xiaomi_redmi-router-ax6000-ubootmod

Signed-off-by: John Audia <therealgraysky@proton.me>
(cherry picked from commit 5714660643e9170920be2abbb2297d9aac0b9533)

1 files changed, 0 insertions, 56 deletions

diff --git a/target/linux/generic/backport-5.15/610-v6.3-net-page_pool-use-in_softirq-instead.patch b/target/linux/generic/backport-5.15/610-v6.3-net-page_pool-use-in_softirq-instead.patch
deleted file mode 100644
index 71e1140595..0000000000
--- a/target/linux/generic/backport-5.15/610-v6.3-net-page_pool-use-in_softirq-instead.patch
+++ /dev/null
@@ -1,56 +0,0 @@
-From: Qingfang DENG <qingfang.deng@siflower.com.cn>
-Date: Fri, 3 Feb 2023 09:16:11 +0800
-Subject: [PATCH] net: page_pool: use in_softirq() instead
-
-We use BH context only for synchronization, so we don't care if it's
-actually serving softirq or not.
-
-As a side node, in case of threaded NAPI, in_serving_softirq() will
-return false because it's in process context with BH off, making
-page_pool_recycle_in_cache() unreachable.
-
-Signed-off-by: Qingfang DENG <qingfang.deng@siflower.com.cn>
----
-
---- a/include/net/page_pool.h
-+++ b/include/net/page_pool.h
-@@ -357,7 +357,7 @@ static inline void page_pool_nid_changed
- static inline void page_pool_ring_lock(struct page_pool *pool)
- 	__acquires(&pool->ring.producer_lock)
- {
--	if (in_serving_softirq())
-+	if (in_softirq())
- 		spin_lock(&pool->ring.producer_lock);
- 	else
- 		spin_lock_bh(&pool->ring.producer_lock);
-@@ -366,7 +366,7 @@ static inline void page_pool_ring_lock(s
- static inline void page_pool_ring_unlock(struct page_pool *pool)
- 	__releases(&pool->ring.producer_lock)
- {
--	if (in_serving_softirq())
-+	if (in_softirq())
- 		spin_unlock(&pool->ring.producer_lock);
- 	else
- 		spin_unlock_bh(&pool->ring.producer_lock);
---- a/net/core/page_pool.c
-+++ b/net/core/page_pool.c
-@@ -512,8 +512,8 @@ static void page_pool_return_page(struct
- static bool page_pool_recycle_in_ring(struct page_pool *pool, struct page *page)
- {
- 	int ret;
--	/* BH protection not needed if current is serving softirq */
--	if (in_serving_softirq())
-+	/* BH protection not needed if current is softirq */
-+	if (in_softirq())
- 		ret = ptr_ring_produce(&pool->ring, page);
- 	else
- 		ret = ptr_ring_produce_bh(&pool->ring, page);
-@@ -576,7 +576,7 @@ __page_pool_put_page(struct page_pool *p
- 			page_pool_dma_sync_for_device(pool, page,
- 						      dma_sync_size);
- 
--		if (allow_direct && in_serving_softirq() &&
-+		if (allow_direct && in_softirq() &&
- 		    page_pool_recycle_in_cache(page, pool))
- 			return NULL;
-