netdev - Re: [PATCH net-next] net: phy: Allow building mdio-boardinfo into the kernel

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Date:   Tue, 28 Mar 2017 22:43:51 +0200
From:   Arnd Bergmann <arnd@...db.de>
To:     Florian Fainelli <f.fainelli@...il.com>
Cc:     Networking <netdev@...r.kernel.org>,
        David Miller <davem@...emloft.net>,
        Andrew Lunn <andrew@...n.ch>, rmk+kernel@...linux.org.uk
Subject: Re: [PATCH net-next] net: phy: Allow building mdio-boardinfo into the kernel

On Tue, Mar 28, 2017 at 9:57 PM, Florian Fainelli <f.fainelli@...il.com> wrote:
> mdio-boardinfo contains code that is helpful for platforms to register
> specific MDIO bus devices independent of how CONFIG_MDIO_DEVICE or
> CONFIG_PHYLIB will be selected (modular or built-in). In order to make
> that possible, let's do the following:
>
> - descend into drivers/net/phy/ unconditionally
>
> - make mdiobus_setup_mdiodev_from_board_info() take a callback argument
>   which allows us not to expose the internal MDIO board info list and
>   mutex, yet maintain the logic within the same file
>
> - relocate the code that creates a MDIO device into
>   drivers/net/phy/mdio_bus.c
>
> - build mdio-boardinfo.o into the kernel as soon as MDIO_DEVICE is
>   defined (y or m)
>
> Fixes: 90eff9096c01 ("net: phy: Allow splitting MDIO bus/device support from PHYs")
> Fixes: 648ea0134069 ("net: phy: Allow pre-declaration of MDIO devices")
> Signed-off-by: Florian Fainelli <f.fainelli@...il.com>

Looks good at first glance. I've added this to my randconfig build setup,
let's see if there are any remaining corner cases I can hit.

        Arnd