From mboxrd@z Thu Jan  1 00:00:00 1970
From: Pavel Machek <pavel@ucw.cz>
Subject: stmmac: lockups (was Re: Synopsys Ethernet QoS)
Date: Wed, 14 Dec 2016 20:01:25 +0100
Message-ID: <20161214190125.GA28424@amd>
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Cc: Niklas Cassel <niklas.cassel@axis.com>,
        Giuseppe CAVALLARO <peppe.cavallaro@st.com>,
        Florian Fainelli <f.fainelli@gmail.com>,
        Andy Shevchenko <andy.shevchenko@gmail.com>,
        David Miller <davem@davemloft.net>, larper@axis.com,
        rabinv@axis.com, netdev <netdev@vger.kernel.org>,
        CARLOS.PALMINHA@synopsys.com, Jie.Deng1@synopsys.com,
        Stephen Warren <swarren@nvidia.com>
To: Joao Pinto <Joao.Pinto@synopsys.com>
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Hi!

> I know that this is completely of topic, but I am facing a dificulty with
> stmmac. I have interrupts, mac well configured rx packets being received
> successfully, but TX is not working, resulting in Tx errors =3D Total TX =
packets.
> I have made a lot of debug and my conclusions is that by some reason when=
 using
> stmmac after starting tx dma, the hw state machine enters a deadend state
> resulting in those errors. Anyone faced this trouble?

Well.... what I'm debugging are lockups after many packets transmitted
(followed by netdev watchdog; stmmac_tx_err() does not work for me, it
kills the device even when run from working state; ifconfig down/up
helps). 4.4 locks up in minutes to hours, 4.9 seems to work better
(but I believe I seen a lockup there, too; once).

So... probably different problem?

Best regards,
									Pavel
--=20
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blo=
g.html

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