linux-kernel - Re: [PATCH 2/3] net: dsa: b53: mmap: register MDIO Mux bus controller

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Message-ID: <CAKR-sGfMF+UtL4kY2hJ9gw4=jQu1JAqqF3N0obeUE=vGj8R-yA@mail.gmail.com>
Date:   Fri, 17 Mar 2023 17:30:38 +0100
From:   Álvaro Fernández Rojas <noltari@...il.com>
To:     Andrew Lunn <andrew@...n.ch>
Cc:     Vladimir Oltean <olteanv@...il.com>, davem@...emloft.net,
        edumazet@...gle.com, kuba@...nel.org, pabeni@...hat.com,
        robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org,
        f.fainelli@...il.com, jonas.gorski@...il.com, hkallweit1@...il.com,
        linux@...linux.org.uk, netdev@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/3] net: dsa: b53: mmap: register MDIO Mux bus controller

El vie, 17 mar 2023 a las 17:27, Andrew Lunn (<andrew@...n.ch>) escribió:
>
> > > The proposed solution is too radical for a problem that was not properly
> > > characterized yet, so this patch set has my temporary NACK.
> >
> > Forgive me, but why do you consider this solution too radical?
>
> I have to agree with Vladimir here. The problem is not the driver, but
> when the driver is instantiated. It seems radical to remove a driver
> just because it loads at the wrong time. Ideally you want the driver
> to figure out now is not a good time and return -EPROBE_DEFER, because
> a resource it requires it not available.

Ok, I'm open to suggestions.
Any ideas on how exactly to figure out when it's a good time to probe
or return -EPROBE_DEFER instead?

>
>   Andrew

--
Álvaro.