netdev - Dell Inspiron 5558/0VNM2T and suspend/resume problem with r8169

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Date:   Wed, 1 Mar 2017 12:44:29 -0300
From:   Diego Viola <diego.viola@...il.com>
To:     linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Subject: Dell Inspiron 5558/0VNM2T and suspend/resume problem with r8169

My machine (a Dell Inspiron 5558 laptop) fails to resume from suspend
unless I rmmod r8169 first.

Another workaround is to do this before suspend:

echo 0 > /sys/power/pm_async

I've been reproducing the freeze like this:

$ i3lock && systemctl suspend

I would have to repeat this at least 5 times for the freeze to occur,
but it seems to be easily reproducible.

If I don't invoke i3lock, I cannot get the freeze to happen, but it
seems to happen with other lockers also.

I have tried Alt+SysRq+r and tried to switch to another TTY but the
machine is always unresponsive, which indicates that it's a kernel
panic.

I have had a similar issue to this about a year ago with the jme
driver and this was the fix:

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/drivers/net/ethernet/jme.c?id=ee50c130c82175eaa0820c96b6d3763928af2241

I haven't tried getting a kernel trace yet, but all seems to indicate
the problem is caused by r8169, at least til now.

Any ideas, please?

Thanks,
Diego