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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
@@ -1536,8 +1536,8 @@ 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;
}
@@ -1570,8 +1570,9 @@ 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;
}
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