netdev - Re: [PATCH v5 net-next 08/13] net: phy: marvell-88q2xxx: add support for temperature sensor

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Message-ID: <20240201162349.GC48964@debian>
Date: Thu, 1 Feb 2024 17:23:49 +0100
From: Dimitri Fedrau <dima.fedrau@...il.com>
To: Guenter Roeck <linux@...ck-us.net>
Cc: Andrew Lunn <andrew@...n.ch>, Heiner Kallweit <hkallweit1@...il.com>,
	Russell King <linux@...linux.org.uk>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Jean Delvare <jdelvare@...e.com>,
	Stefan Eichenberger <eichest@...il.com>, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-hwmon@...r.kernel.org
Subject: Re: [PATCH v5 net-next 08/13] net: phy: marvell-88q2xxx: add support
 for temperature sensor

Am Thu, Feb 01, 2024 at 05:39:25AM -0800 schrieb Guenter Roeck:
> On 2/1/24 05:27, Andrew Lunn wrote:
> > > > +#ifdef CONFIG_HWMON
> > > 
> > > HWMON is tristate, so this may be problematic if the driver is built
> > > into the kernel and hwmon is built as module.
> > 
> > There should be Kconfig in addition to this, e.g.
> > 
> > config MAXLINEAR_GPHY
> >          tristate "Maxlinear Ethernet PHYs"
> >          select POLYNOMIAL if HWMON
> >          depends on HWMON || HWMON=n
> >          help
> >            Support for the Maxlinear GPY115, GPY211, GPY212, GPY215,
> >            GPY241, GPY245 PHYs.
> > 
> > So its forced to being built in, or not built at all.
> > 
> 
> Even then it should be "#if IS_ENABLED(HWMON)" in the code.
> 
>
If using "#if IS_ENABLED(HWMON)" do I have to add the dependency in
the KConfig file ? When looking at other PHY drivers, they do.

Dimitri