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

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Message-ID: <20220701150848.75eeprptmb5beip7@bogus>
Date:   Fri, 1 Jul 2022 16:08:48 +0100
From:   Sudeep Holla <sudeep.holla@....com>
To:     Saravana Kannan <saravanak@...gle.com>
Cc:     Tony Lindgren <tony@...mide.com>, 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>,
        Sudeep Holla <sudeep.holla@....com>,
        Alexander Stein <alexander.stein@...tq-group.com>
Subject: Re: [PATCH v2 1/9] PM: domains: Delete usage of
 driver_deferred_probe_check_state()

Hi, Saravana,

On Fri, Jul 01, 2022 at 01:26:12AM -0700, Saravana Kannan wrote:

[...]

> Can you check if this hack helps? If so, then I can think about
> whether we can pick it up without breaking everything else. Copy-paste
> tab mess up warning.

Sorry for jumping in late and not even sure if this is right thread.
I have not bisected anything yet, but I am seeing issues on my Juno R2
with SCMI enabled power domains and Coresight AMBA devices.

OF: amba_device_add() failed (-19) for /etf@...10000
OF: amba_device_add() failed (-19) for /tpiu@...30000
OF: amba_device_add() failed (-19) for /funnel@...40000
OF: amba_device_add() failed (-19) for /etr@...70000
OF: amba_device_add() failed (-19) for /stm@...00000
OF: amba_device_add() failed (-19) for /replicator@...20000
OF: amba_device_add() failed (-19) for /cpu-debug@...10000
OF: amba_device_add() failed (-19) for /etm@...40000
OF: amba_device_add() failed (-19) for /cti@...20000
OF: amba_device_add() failed (-19) for /funnel@...c0000
OF: amba_device_add() failed (-19) for /cpu-debug@...10000
OF: amba_device_add() failed (-19) for /etm@...40000
OF: amba_device_add() failed (-19) for /cti@...20000
OF: amba_device_add() failed (-19) for /cpu-debug@...10000
OF: amba_device_add() failed (-19) for /etm@...40000
OF: amba_device_add() failed (-19) for /cti@...20000
OF: amba_device_add() failed (-19) for /funnel@...c0000
OF: amba_device_add() failed (-19) for /cpu-debug@...10000
OF: amba_device_add() failed (-19) for /etm@...40000
OF: amba_device_add() failed (-19) for /cti@...20000
OF: amba_device_add() failed (-19) for /cpu-debug@...10000
OF: amba_device_add() failed (-19) for /etm@...40000
OF: amba_device_add() failed (-19) for /cti@...20000
OF: amba_device_add() failed (-19) for /cpu-debug@...10000
OF: amba_device_add() failed (-19) for /etm@...40000
OF: amba_device_add() failed (-19) for /cti@...20000
OF: amba_device_add() failed (-19) for /cti@...20000
OF: amba_device_add() failed (-19) for /cti@...10000
OF: amba_device_add() failed (-19) for /funnel@...30000
OF: amba_device_add() failed (-19) for /etf@...40000
OF: amba_device_add() failed (-19) for /funnel@...50000
OF: amba_device_add() failed (-19) for /cti@...60000

These are working fine with deferred probe in the mainline.
I tried the hack you have suggested here(rather Tony's version), also
tried with fw_devlink=0 and fw_devlink=1 && fw_devlink.strict=0
No change in the behaviour.

The DTS are in arch/arm64/boot/dts/arm/juno-*-scmi.dts and there
coresight devices are mostly in juno-cs-r1r2.dtsi

Let me know if there is anything obvious or you want me to bisect which
means I need more time. I can do that next week.

-- 
Regards,
Sudeep