diff options
Diffstat (limited to 'target/linux/generic/pending-5.4')
| -rw-r--r-- | target/linux/generic/pending-5.4/770-11-net-ethernet-mtk_eth_soc-avoid-rearming-interrupt-if.pa | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/target/linux/generic/pending-5.4/770-11-net-ethernet-mtk_eth_soc-avoid-rearming-interrupt-if.pa b/target/linux/generic/pending-5.4/770-11-net-ethernet-mtk_eth_soc-avoid-rearming-interrupt-if.pa new file mode 100644 index 0000000000..c8d17aefa8 --- /dev/null +++ b/target/linux/generic/pending-5.4/770-11-net-ethernet-mtk_eth_soc-avoid-rearming-interrupt-if.pa @@ -0,0 +1,35 @@ +From: Felix Fietkau <nbd@nbd.name> +Date: Fri, 4 Sep 2020 18:14:05 +0200 +Subject: [PATCH] net: ethernet: mtk_eth_soc: avoid rearming interrupt if + napi_complete returns false + +Reduces unnecessary interrupts + +Signed-off-by: Felix Fietkau <nbd@nbd.name> +--- + +--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c ++++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c +@@ -1512,8 +1512,8 @@ 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; + } +@@ -1546,8 +1546,9 @@ 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; + } |