linux-kernel - Re: [PATCH v5 0/6] driver core: Improve and cleanup driver_deferred_probe_check

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Message-ID: <20200422064609.GA17637@lxhi-065.adit-jv.com>
Date:   Wed, 22 Apr 2020 08:46:09 +0200
From:   Eugeniu Rosca <erosca@...adit-jv.com>
To:     John Stultz <john.stultz@...aro.org>
CC:     lkml <linux-kernel@...r.kernel.org>, Rob Herring <robh@...nel.org>,
        "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Kevin Hilman <khilman@...nel.org>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Pavel Machek <pavel@....cz>, Len Brown <len.brown@...el.com>,
        Todd Kjos <tkjos@...gle.com>,
        Saravana Kannan <saravanak@...gle.com>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Thierry Reding <treding@...dia.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Linux PM list <linux-pm@...r.kernel.org>,
        <linux-renesas-soc@...r.kernel.org>,
        Eugeniu Rosca <erosca@...adit-jv.com>,
        Eugeniu Rosca <roscaeugeniu@...il.com>
Subject: Re: [PATCH v5 0/6] driver core: Improve and cleanup
 driver_deferred_probe_check_state()

Hi John,

On Tue, Apr 21, 2020 at 06:16:31PM -0700, John Stultz wrote:
> On Tue, Apr 21, 2020 at 4:59 PM Eugeniu Rosca <erosca@...adit-jv.com> wrote:
> >
> > Building a recent [0] kernel using vanilla arm64 defconfig
> > and booting it on H3ULCB, I get buried into backtraces [1].
> >
> > After reverting this series, up to and including its first commit,
> > booting goes back to normal [2].
> >
> > Any chance to get a fix or at least some hints where to dig into?
> 
> Yea. There's two patch sets I have for this. The first quiets down the
> warnings(we don't need stack dumps for these):
>   https://lore.kernel.org/lkml/20200330202715.86609-1-john.stultz@linaro.org/
> 
> The second reverts the default timeout back to 0:
>   https://lore.kernel.org/lkml/20200413204253.84991-1-john.stultz@linaro.org/
> 
> 
> Let me know if those work for you, or if you're still having trouble
> afterwards.  I need to resubmit the set as I'm guessing they've been
> overlooked.

The patches fix the issue on my end. Thanks!
One note is that they carry a slight mutual conflict, but that's up to
the maintainer to complain about.

Many thanks again!
Hope the patches will be picked up soon!

-- 
Best regards,
Eugeniu Rosca