linux-kernel - Re: [PATCH] of_mdio: Fix broken PHY IRQ in case of probe deferral

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Date:   Sun, 9 Jul 2017 19:28:15 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     Florian Fainelli <f.fainelli@...il.com>
Cc:     Geert Uytterhoeven <geert@...ux-m68k.org>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Rob Herring <robh+dt@...nel.org>,
        Frank Rowand <frowand.list@...il.com>,
        Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>,
        Sergei Shtylyov <sergei.shtylyov@...entembedded.com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        Linux-Renesas <linux-renesas-soc@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] of_mdio: Fix broken PHY IRQ in case of probe deferral

> It sure does fix a real issue, but I am really concerned about the
> inability to test this patch in a configuration where we have multiple
> PHY(s) or MDIO device(s) hanging off the same MDIO bus and one of those
> requesting an EPROBE_DEFER.
> 
> I currently don't have a setup where I could exercise this, Andrew, do you?

Hi Florian

What i do have, is a switch with some built in copper Marvell PHYs and
external SFF modules which use fixed link. I can probably hack the
fixed-link driver to return EPROBE_DEFER a few times.

	   Andrew