netdev - Regression: Network link not coming up after suspend/resume cycle

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Message-ID: <71354431.m7NQiGp1Tu@minako>
Date:   Sun, 29 Sep 2019 21:20:34 +0200
From:   Jan Janssen <medhefgo@....de>
To:     netdev@...r.kernel.org
Cc:     Vedang Patel <vedang.patel@...el.com>,
        Jeff Kirsher <jeffrey.t.kirsher@...el.com>
Subject: Regression: Network link not coming up after suspend/resume cycle

Hi,

I've been noticing lately that my network link sometimes does not go up
after a suspend resume cycle (roughly 1 or 2 out of 10 times). This also
sometimes happens with a fresh boot too. Doing a manual
"ip link set down/up" cycle resolves this issue.

I was able to bisect it to the commit below (or hope so) and also CCed
the maintainer for my driver too.

This is happening on a up-to-date Arch Linux system with a Intel I219-V.

Jan

7ede7b03484bbb035aa5be98c45a40cfabdc0738 is the first bad commit
commit 7ede7b03484bbb035aa5be98c45a40cfabdc0738
Author: Vedang Patel <vedang.patel@...el.com>
Date:   Tue Jun 25 15:07:18 2019 -0700

taprio: make clock reference conversions easier

Later in this series we will need to transform from
CLOCK_MONOTONIC (used in TCP) to the clock reference used in TAPRIO.

Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@...el.com>
Signed-off-by: Vedang Patel <vedang.patel@...el.com>
Signed-off-by: David S. Miller <davem@...emloft.net>

net/sched/sch_taprio.c | 30 ++++++++++++++++++++++--------
1 file changed, 22 insertions(+), 8 deletions(-)