linux-kernel - RE: [PATCH] net: stmmac: Fix RX Coalesce IOC always true issue

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Date:   Tue, 9 Jun 2020 14:20:58 +0000
From:   Jose Abreu <Jose.Abreu@...opsys.com>
To:     Biao Huang <biao.huang@...iatek.com>,
        Giuseppe Cavallaro <peppe.cavallaro@...com>,
        Alexandre Torgue <alexandre.torgue@...com>,
        "David S . Miller" <davem@...emloft.net>
CC:     "linux-mediatek@...ts.infradead.org" 
        <linux-mediatek@...ts.infradead.org>,
        "yt.shen@...iatek.com" <yt.shen@...iatek.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Jose Abreu <Jose.Abreu@...opsys.com>
Subject: RE: [PATCH] net: stmmac: Fix RX Coalesce IOC always true issue

From: Biao Huang <biao.huang@...iatek.com>
Date: Jun/09/2020, 10:41:33 (UTC+00:00)

> -		rx_q->rx_count_frames += priv->rx_coal_frames;
> -		if (rx_q->rx_count_frames > priv->rx_coal_frames)
> +		if (rx_q->rx_count_frames >= priv->rx_coal_frames)

This is no right. If you want to RX IC bit to not always be set you need 
to change coalesce parameters using ethtool.

---
Thanks,
Jose Miguel Abreu