diff options
Diffstat (limited to 'target/linux/generic/backport-5.15/729-07-v6.1-net-ethernet-mtk_eth_soc-remove-cpu_relax-in-mtk_pen.patch')
-rw-r--r-- | target/linux/generic/backport-5.15/729-07-v6.1-net-ethernet-mtk_eth_soc-remove-cpu_relax-in-mtk_pen.patch | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/target/linux/generic/backport-5.15/729-07-v6.1-net-ethernet-mtk_eth_soc-remove-cpu_relax-in-mtk_pen.patch b/target/linux/generic/backport-5.15/729-07-v6.1-net-ethernet-mtk_eth_soc-remove-cpu_relax-in-mtk_pen.patch new file mode 100644 index 0000000000..e51dd7b97a --- /dev/null +++ b/target/linux/generic/backport-5.15/729-07-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 +@@ -3436,11 +3436,8 @@ static void mtk_pending_work(struct work + rtnl_lock(); + + dev_dbg(eth->dev, "[%s][%d] reset\n", __func__, __LINE__); ++ set_bit(MTK_RESETTING, ð->state); + +- while (test_and_set_bit_lock(MTK_RESETTING, ð->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]) +@@ -3474,7 +3471,7 @@ static void mtk_pending_work(struct work + + dev_dbg(eth->dev, "[%s][%d] reset done\n", __func__, __LINE__); + +- clear_bit_unlock(MTK_RESETTING, ð->state); ++ clear_bit(MTK_RESETTING, ð->state); + + rtnl_unlock(); + } |