netdev - Re: [PATCH v12 net-next 9/9] mfd: ocelot: add support for the vsc7512 chip via spi

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Date:   Fri, 1 Jul 2022 20:02:41 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     Colin Foster <colin.foster@...advantage.com>
Cc:     devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-gpio@...r.kernel.org,
        Vladimir Oltean <vladimir.oltean@....com>,
        Lee Jones <lee.jones@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.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>,
        Lars Povlsen <lars.povlsen@...rochip.com>,
        Steen Hegelund <Steen.Hegelund@...rochip.com>,
        UNGLinuxDriver@...rochip.com,
        Linus Walleij <linus.walleij@...aro.org>,
        Wolfram Sang <wsa@...nel.org>,
        Terry Bowman <terry.bowman@....com>,
        Andy Shevchenko <andy.shevchenko@...il.com>,
        katie.morris@...advantage.com
Subject: Re: [PATCH v12 net-next 9/9] mfd: ocelot: add support for the
 vsc7512 chip via spi

On Fri,  1 Jul 2022 12:26:09 -0700 Colin Foster wrote:
> The VSC7512 is a networking chip that contains several peripherals. Many of
> these peripherals are currently supported by the VSC7513 and VSC7514 chips,
> but those run on an internal CPU. The VSC7512 lacks this CPU, and must be
> controlled externally.
> 
> Utilize the existing drivers by referencing the chip as an MFD. Add support
> for the two MDIO buses, the internal phys, pinctrl, and serial GPIO.

allmodconfig is not happy, I didn't spot that being mentioned as
expected:

ERROR: modpost: "ocelot_spi_init_regmap" [drivers/mfd/ocelot-core.ko] undefined!
WARNING: modpost: module ocelot-spi uses symbol ocelot_chip_reset from namespace MFD_OCELOT, but does not import it.
WARNING: modpost: module ocelot-spi uses symbol ocelot_core_init from namespace MFD_OCELOT, but does not import it.
make[2]: *** [../scripts/Makefile.modpost:128: modules-only.symvers] Error 1
make[1]: *** [/home/nipa/net-next/Makefile:1757: modules] Error 2