linux-kernel - Re: [PATCH net v3] net: thunderx: workaround BGX TX Underflow issue

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Message-Id: <20200220.154946.233139739563491001.davem@davemloft.net>
Date:   Thu, 20 Feb 2020 15:49:46 -0800 (PST)
From:   David Miller <davem@...emloft.net>
To:     rjones@...eworks.com
Cc:     sgoutham@...vell.com, rrichter@...vell.com, kuba@...nel.org,
        maciej.fijalkowski@...el.com, linux-arm-kernel@...ts.infradead.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        tharvey@...eworks.com
Subject: Re: [PATCH net v3] net: thunderx: workaround BGX TX Underflow issue

From: Robert Jones <rjones@...eworks.com>
Date: Wed, 19 Feb 2020 15:19:36 -0800

> From: Tim Harvey <tharvey@...eworks.com>
> 
> While it is not yet understood why a TX underflow can easily occur
> for SGMII interfaces resulting in a TX wedge. It has been found that
> disabling/re-enabling the LMAC resolves the issue.
> 
> Signed-off-by: Tim Harvey <tharvey@...eworks.com>
> Reviewed-by: Robert Jones <rjones@...eworks.com>

Applied.