From: Felix Fietkau <nbd@nbd.name>
Date: Fri, 23 Apr 2021 05:21:05 +0000 (-0700)
Subject: net: ethernet: mtk_eth_soc: reduce unnecessary interrupts
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=16769a8923fad5a5377253bcd76b0e0d64976c73;p=linux.git

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>
---

diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
index 4735942ed2837..e1792ccaedc3d 100644
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
@@ -1519,8 +1519,8 @@ static int mtk_napi_tx(struct napi_struct *napi, int budget)
 	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;
 }
@@ -1553,8 +1553,9 @@ 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;
 }