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Date: Thu, 1 Feb 2024 17:56:09 +0100
From: Dimitri Fedrau <dima.fedrau@...il.com>
To: Andrew Lunn <andrew@...n.ch>
Cc: Guenter Roeck <linux@...ck-us.net>,
	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 05:47:21PM +0100 schrieb Andrew Lunn:
> On Thu, Feb 01, 2024 at 05:23:49PM +0100, Dimitri Fedrau wrote:
> > 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.
> 
> Please follow what other drivers do. Its easy to break the build,
> resulting is undefined symbols. What we have now works.

Sure.

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