linux-kernel - 4.9.28: VIA velocity hang: how to find cause?

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Message-ID: <0a888df7-ca7e-10dc-d086-fd0277530e67@xs4all.nl>
Date:   Tue, 23 May 2017 18:07:21 +0200
From:   Udo van den Heuvel <udovdh@...all.nl>
To:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: 4.9.28: VIA velocity hang: how to find cause?

Hello,

I noticed multiple times that VIA velocity interface stop functioning
without reason but is revived after and `ifdown ethX; ifup ethX`.
No data is transferred until the `fix` is applied.
No errors are shown in dmesg or /var/log/messages w.r.t. the interface.
How to find the root cause?

This is with kernel 4.9.28.

Kind regards,
Udo