Received-SPF: pass (google.com: domain of linux-kernel+bounces-48559-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:45e3:2400::1 as permitted sender) client-ip=2604:1380:45e3:2400::1;
Date: Thu, 1 Feb 2024 17:56:09 +0100
From: Dimitri Fedrau <dima.fedrau@gmail.com>
To: Andrew Lunn <andrew@lunn.ch>
Cc: Guenter Roeck <linux@roeck-us.net>,
	Heiner Kallweit <hkallweit1@gmail.com>,
	Russell King <linux@armlinux.org.uk>,
	"David S. Miller" <davem@davemloft.net>,
	Eric Dumazet <edumazet@google.com>,
	Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
	Jean Delvare <jdelvare@suse.com>,
	Stefan Eichenberger <eichest@gmail.com>, netdev@vger.kernel.org,
	linux-kernel@vger.kernel.org, linux-hwmon@vger.kernel.org
Subject: Re: [PATCH v5 net-next 08/13] net: phy: marvell-88q2xxx: add support
 for temperature sensor
Message-ID: <20240201165609.GE48964@debian>
References: <20240122212848.3645785-1-dima.fedrau@gmail.com>
 <20240122212848.3645785-9-dima.fedrau@gmail.com>
 <88a60be9-083b-4618-845c-6983bcad3540@roeck-us.net>
 <c9866a56-d82e-4a3d-b335-db22c0413416@lunn.ch>
 <a02c7451-8515-45d4-ae7b-9e64b03b5b38@roeck-us.net>
 <20240201162349.GC48964@debian>
 <b4fc0bc4-1585-4ae0-a980-10814e6d9ff6@lunn.ch>
Precedence: bulk
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <b4fc0bc4-1585-4ae0-a980-10814e6d9ff6@lunn.ch>

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.