diff options
Diffstat (limited to 'target/linux/generic/backport-5.15/610-v5.13-48-net-ethernet-mtk_eth_soc-reduce-unnecessary-interrup.patch')
| -rw-r--r-- | target/linux/generic/backport-5.15/610-v5.13-48-net-ethernet-mtk_eth_soc-reduce-unnecessary-interrup.patch | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/target/linux/generic/backport-5.15/610-v5.13-48-net-ethernet-mtk_eth_soc-reduce-unnecessary-interrup.patch b/target/linux/generic/backport-5.15/610-v5.13-48-net-ethernet-mtk_eth_soc-reduce-unnecessary-interrup.patch new file mode 100644 index 0000000000..411374c2e7 --- /dev/null +++ b/target/linux/generic/backport-5.15/610-v5.13-48-net-ethernet-mtk_eth_soc-reduce-unnecessary-interrup.patch @@ -0,0 +1,39 @@ +From 16769a8923fad5a5377253bcd76b0e0d64976c73 Mon Sep 17 00:00:00 2001 +From: Felix Fietkau <nbd@nbd.name> +Date: Thu, 22 Apr 2021 22:21:05 -0700 +Subject: [PATCH] net: ethernet: mtk_eth_soc: reduce unnecessary interrupts + +Avoid rearming interrupt if napi_complete returns false + +Signed-off-by: Felix Fietkau <nbd@nbd.name> +Signed-off-by: Ilya Lipnitskiy <ilya.lipnitskiy@gmail.com> +Signed-off-by: David S. Miller <davem@davemloft.net> +--- + drivers/net/ethernet/mediatek/mtk_eth_soc.c | 9 +++++---- + 1 file changed, 5 insertions(+), 4 deletions(-) + +--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c ++++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c +@@ -1540,8 +1540,8 @@ static int mtk_napi_tx(struct napi_struc + if (status & MTK_TX_DONE_INT) + return budget; + +- napi_complete(napi); +- mtk_tx_irq_enable(eth, MTK_TX_DONE_INT); ++ if (napi_complete(napi)) ++ mtk_tx_irq_enable(eth, MTK_TX_DONE_INT); + + return tx_done; + } +@@ -1574,8 +1574,9 @@ poll_again: + remain_budget -= rx_done; + goto poll_again; + } +- napi_complete(napi); +- mtk_rx_irq_enable(eth, MTK_RX_DONE_INT); ++ ++ if (napi_complete(napi)) ++ mtk_rx_irq_enable(eth, MTK_RX_DONE_INT); + + return rx_done + budget - remain_budget; + } |