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Date:   Wed, 26 Jan 2022 20:55:22 +0800
From:   Jisheng Zhang <jszhang@kernel.org>
To:     Andrew Lunn <andrew@lunn.ch>
Cc:     Giuseppe Cavallaro <peppe.cavallaro@st.com>,
        Alexandre Torgue <alexandre.torgue@foss.st.com>,
        Jose Abreu <joabreu@synopsys.com>,
        "David S . Miller" <davem@davemloft.net>,
        Jakub Kicinski <kuba@kernel.org>,
        Maxime Coquelin <mcoquelin.stm32@gmail.com>,
        netdev@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com,
        linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] net: stmmac: don't stop RXC during LPI
Message-ID: <YfFEulZJKzuRQfeG@xhacker>
References: <20220123141245.1060-1-jszhang@kernel.org>
 <Ye15va7tFWMgKPEE@lunn.ch>
 <Ye19bHxcQ5Plx0v9@xhacker>
 <Ye2SznI2rNKAUDIq@lunn.ch>
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On Sun, Jan 23, 2022 at 06:39:26PM +0100, Andrew Lunn wrote:
> > I think this is a common issue because the MAC needs phy's RXC for RX
> > logic. But it's better to let other stmmac users verify. The issue
> > can easily be reproduced on platforms with PHY_POLL external phy.
> 
> What is the relevance of PHY polling here? Are you saying if the PHY
> is using interrupts you do not see this issue?

I tried these two days, if the PHY is using interrupts, I can't
reproduce the issue. It looks a bit more complex. Any suggestions?

Thanks in advance