netdev - Re: [PATCH v2] irqchip/renesas-irqc: Postpone driver initialization

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Date:   Wed, 9 Nov 2016 20:43:15 +0100
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Florian Fainelli <f.fainelli@...il.com>
Cc:     Geert Uytterhoeven <geert+renesas@...der.be>,
        Thomas Gleixner <tglx@...utronix.de>,
        Jason Cooper <jason@...edaemon.net>,
        Marc Zyngier <marc.zyngier@....com>,
        Simon Horman <horms@...ge.net.au>,
        Magnus Damm <magnus.damm@...il.com>,
        Linux-Renesas <linux-renesas-soc@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: [PATCH v2] irqchip/renesas-irqc: Postpone driver initialization

Hi Florian,

On Wed, Nov 9, 2016 at 8:17 PM, Florian Fainelli <f.fainelli@...il.com> wrote:
> On 11/08/2016 11:50 AM, Geert Uytterhoeven wrote:
>> On Tue, Nov 8, 2016 at 8:42 PM, Florian Fainelli <f.fainelli@...il.com> wrote:
>>> On 11/08/2016 11:35 AM, Geert Uytterhoeven wrote:
>>>> Currently the renesas-irqc driver uses postcore_initcall().
>>>>
>>>> However, the new CPG/MSSR driver uses subsys_initcall(). Hence the
>>>> IRQC's probe will be deferred, which causes the Micrel Ethernet PHY to
>>>> not find its interrupt on R-Car Gen2 and RZ/G, as the of_mdio subsystem
>>>> does not support deferred probe yet.
>>>
>>> Is not that the more correct fix to implement though?
>>
>> Sure it is. But nothing has happened since this was reported ca. 1 year ago.
>> Cfr. "of_mdiobus_register_phy() and deferred probe"
>> https://lkml.org/lkml/2015/10/22/377
>>
>> My MDIO foo is not that strong...
>
> Let me try to cook something here which may require
> of_mdiobus_register_phy(), are you okay testing patches?

Of course I am. Thanks a lot!

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds