linux-kernel - Re: [PATCH v2 0/9] deferred_probe

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Message-ID: <20220608154908.4ddb9795@kernel.org>
Date:   Wed, 8 Jun 2022 15:49:08 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     Saravana Kannan <saravanak@...gle.com>
Cc:     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>,
        Paolo Abeni <pabeni@...hat.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        David Ahern <dsahern@...nel.org>,
        Android Kernel Team <kernel-team@...roid.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux PM list <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>,
        Linux-Renesas <linux-renesas-soc@...r.kernel.org>,
        Niklas Söderlund 
        <niklas.soderlund+renesas@...natech.se>,
        Laurent Pinchart <laurent.pinchart+renesas@...asonboard.com>,
        Rob Herring <robh+dt@...nel.org>,
        Vladimir Oltean <vladimir.oltean@....com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Thomas Bogendoerfer <tbogendoerfer@...e.de>
Subject: Re: [PATCH v2 0/9] deferred_probe_timeout logic clean up

On Wed, 8 Jun 2022 14:07:44 -0700 Saravana Kannan wrote:
> David/Jakub,
> 
> Do the IP4 autoconfig changes look reasonable to you?

I'm no expert in this area, I'd trust the opinion of the embedded folks
(adding Florian as well) more than myself. It's unclear to me why we'd
wait_for_init_devices_probe() after the first failed iteration, sleep,
and then allow 11 more iterations with wait_for_device_probe().

Let me also add Thomas since he wrote e2ffe3ff6f5e ("net: ipconfig:
Wait for deferred device probes").