linux-kernel - Re: [PATCH v2 1/9] PM: domains: Delete usage of driver_deferred_probe_check

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Message-ID: <CAGETcx8H9je6Yg-fciU5-dh22xB0_h6XzAfH5UsCSeET97wrpA@mail.gmail.com>
Date:   Tue, 12 Jul 2022 17:49:41 -0700
From:   Saravana Kannan <saravanak@...gle.com>
To:     Tony Lindgren <tony@...mide.com>
Cc:     Rob Herring <robh@...nel.org>,
        Geert Uytterhoeven <geert@...ux-m68k.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Kevin Hilman <khilman@...nel.org>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Len Brown <len.brown@...el.com>, Pavel Machek <pavel@....cz>,
        Joerg Roedel <joro@...tes.org>, Will Deacon <will@...nel.org>,
        Andrew Lunn <andrew@...n.ch>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Russell King <linux@...linux.org.uk>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org>,
        David Ahern <dsahern@...nel.org>,
        Android Kernel Team <kernel-team@...roid.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "open list:THERMAL" <linux-pm@...r.kernel.org>,
        Linux IOMMU <iommu@...ts.linux-foundation.org>,
        netdev <netdev@...r.kernel.org>,
        "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        Alexander Stein <alexander.stein@...tq-group.com>
Subject: Re: [PATCH v2 1/9] PM: domains: Delete usage of driver_deferred_probe_check_state()

On Tue, Jul 12, 2022 at 12:12 AM Tony Lindgren <tony@...mide.com> wrote:
>
> * Tony Lindgren <tony@...mide.com> [220701 16:00]:
> > Also, looks like both with the initcall change for prm, and the patch
> > below, there seems to be also another problem where my test devices no
> > longer properly idle somehow compared to reverting the your two patches
> > in next.
>
> Sorry looks like was a wrong conclusion. While trying to track down this
> issue, I cannot reproduce it. So I don't see issues idling with either
> the initcall change or your test patch.
>
> Not sure what caused my earlier tests to fail though. Maybe a config
> change to enable more debugging, or possibly some kind of warm reset vs
> cold reset type issue.

Thanks for getting back to me about the false alarm.

OK, so it looks like my patch to drivers/of/property.c fixed the issue
for you. In that case, let me test that a bit more thoroughly on my
end to make sure it's not breaking any existing functionality. And if
it's not breaking, I'll land that in the kernel eventually. Might be a
bit too late for 5.19. I'm considering temporarily reverting my series
depending on how the rest of the issues from my series go.

-Saravana