netdev - Re: [PATCH net-next 2/2] net: mdio: add amlogic gxl mdio mux support

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Message-ID: <Y8fo6qx7LnXsJN4o@corigine.com>
Date:   Wed, 18 Jan 2023 13:41:14 +0100
From:   Simon Horman <simon.horman@...igine.com>
To:     Andrew Lunn <andrew@...n.ch>
Cc:     Jerome Brunet <jbrunet@...libre.com>, netdev@...r.kernel.org,
        "David S. Miller" <davem@...emloft.net>,
        linux-amlogic@...ts.infradead.org,
        Kevin Hilman <khilman@...libre.com>,
        Neil Armstrong <neil.armstrong@...aro.org>,
        Da Xue <da@...sconfused.com>, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next 2/2] net: mdio: add amlogic gxl mdio mux support

On Wed, Jan 18, 2023 at 03:56:32AM +0100, Andrew Lunn wrote:
> > > >> +	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
> > > >> +	if (!priv)
> > > >> +		return -ENOMEM;
> > > >
> > > > nit: may be it is nicer to use dev_err_probe() here for consistency.
> > > 
> > > That was on purpose. I only use the `dev_err_probe()` when the probe may
> > > defer, which I don't expect here.
> > > 
> > > I don't mind changing if you prefer it this way.
> > 
> > I have no strong opinion on this :)
> 
> dev_err_probe() does not apply here, because devm_kzalloc does not
> return an error code. Hence it cannot be EPROBE_DEFFER, which is what
> dev_err_probe() is looking for.

Sure, there is no EPROBE_DEFFER.

But, FWIIW, my reading of the documentation for dev_err_probe()
is that it's use in such cases is acceptable.

Anyway, let's pass on my suggestion.