1 From: Felix Fietkau <nbd@nbd.name>
2 Date: Fri, 4 Sep 2020 18:14:05 +0200
3 Subject: [PATCH] net: ethernet: mtk_eth_soc: avoid rearming interrupt if
4 napi_complete returns false
6 Reduces unnecessary interrupts
8 Signed-off-by: Felix Fietkau <nbd@nbd.name>
11 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
12 +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
13 @@ -1536,8 +1536,8 @@ static int mtk_napi_tx(struct napi_struc
14 if (status & MTK_TX_DONE_INT)
17 - napi_complete(napi);
18 - mtk_tx_irq_enable(eth, MTK_TX_DONE_INT);
19 + if (napi_complete(napi))
20 + mtk_tx_irq_enable(eth, MTK_TX_DONE_INT);
24 @@ -1570,8 +1570,9 @@ poll_again:
25 remain_budget -= rx_done;
28 - napi_complete(napi);
29 - mtk_rx_irq_enable(eth, MTK_RX_DONE_INT);
31 + if (napi_complete(napi))
32 + mtk_rx_irq_enable(eth, MTK_RX_DONE_INT);
34 return rx_done + budget - remain_budget;