generic: copy backport, hack, pending patch and config from 6.1 to 6.6

Copy backport, hack, pending patch and config from 6.1 to 6.6.

Signed-off-by: Weijie Gao <hackpascal@gmail.com>

1 files changed, 36 insertions, 0 deletions

diff --git a/target/linux/generic/backport-6.6/729-07-v6.1-net-ethernet-mtk_eth_soc-remove-cpu_relax-in-mtk_pen.patch b/target/linux/generic/backport-6.6/729-07-v6.1-net-ethernet-mtk_eth_soc-remove-cpu_relax-in-mtk_pen.patch
new file mode 100644
index 0000000000..cefe1eefff
--- /dev/null
+++ b/target/linux/generic/backport-6.6/729-07-v6.1-net-ethernet-mtk_eth_soc-remove-cpu_relax-in-mtk_pen.patch
@@ -0,0 +1,36 @@
+From: Lorenzo Bianconi <lorenzo@kernel.org>
+Date: Thu, 17 Nov 2022 00:58:46 +0100
+Subject: [PATCH] net: ethernet: mtk_eth_soc: remove cpu_relax in
+ mtk_pending_work
+
+Get rid of cpu_relax in mtk_pending_work routine since MTK_RESETTING is
+set only in mtk_pending_work() and it runs holding rtnl lock
+
+Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+---
+
+--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
++++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+@@ -3480,11 +3480,8 @@ static void mtk_pending_work(struct work
+ 	rtnl_lock();
+ 
+ 	dev_dbg(eth->dev, "[%s][%d] reset\n", __func__, __LINE__);
++	set_bit(MTK_RESETTING, &eth->state);
+ 
+-	while (test_and_set_bit_lock(MTK_RESETTING, &eth->state))
+-		cpu_relax();
+-
+-	dev_dbg(eth->dev, "[%s][%d] mtk_stop starts\n", __func__, __LINE__);
+ 	/* stop all devices to make sure that dma is properly shut down */
+ 	for (i = 0; i < MTK_MAC_COUNT; i++) {
+ 		if (!eth->netdev[i])
+@@ -3518,7 +3515,7 @@ static void mtk_pending_work(struct work
+ 
+ 	dev_dbg(eth->dev, "[%s][%d] reset done\n", __func__, __LINE__);
+ 
+-	clear_bit_unlock(MTK_RESETTING, &eth->state);
++	clear_bit(MTK_RESETTING, &eth->state);
+ 
+ 	rtnl_unlock();
+ }