linux-kernel - Re: power-off delay/hang due to commit 6d25be57 (mainline)

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Message-ID: <87img0kk0t.fsf@gmx.net>
Date:   Tue, 09 Jun 2020 23:26:58 +0200
From:   Stephen Berman <stephen.berman@....net>
To:     Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        Peter Zijlstra <peterz@...radead.org>,
        linux-kernel@...r.kernel.org
Subject: Re: power-off delay/hang due to commit 6d25be57 (mainline)

On Tue, 09 Jun 2020 12:06:23 +0200 Stephen Berman <stephen.berman@....net> wrote:

> Do you still want me to check whether removing the iwlwifi driver makes
> a differece?  And with the CDROM still detached, or does that not
> matter?

I'm not actually sure just what you mean by removing the wifi driver,
but I just now tried moving the iwlwifi firmware out of /lib/firmware,
then booted 5.6.4 as before (with "ignore_loglevel initcall_debug" and
with the CDROM still detached), and of course there was now no wireless
interface.  I started X, Emacs, Firefox (of course with no internet),
VLC, used them a bit then closed them all, then called `shutdown -h now'
and the message output was essentially identical to what I posted
previously (but of course without "iwlwifi 0000:02:00.0: shutdown") and
the machine did not power off.  So if this was the test of removing the
wifi driver, then it made no difference.

Steve Berman