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Message-ID: <65671487.050a0220.dae78.45f0@mx.google.com>
Date: Wed, 29 Nov 2023 11:37:56 +0100
From: Christian Marangi <ansuelsmth@...il.com>
To: "Russell King (Oracle)" <linux@...linux.org.uk>
Cc: Andrew Lunn <andrew@...n.ch>, Heiner Kallweit <hkallweit1@...il.com>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Andy Gross <agross@...nel.org>,
	Bjorn Andersson <andersson@...nel.org>,
	Konrad Dybcio <konrad.dybcio@...aro.org>,
	linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
	linux-arm-msm@...r.kernel.org
Subject: Re: [net-next PATCH 13/14] net: phy: qcom: deatch qca83xx PHY driver
 from at803x

On Wed, Nov 29, 2023 at 09:53:00AM +0000, Russell King (Oracle) wrote:
> On Wed, Nov 29, 2023 at 03:12:18AM +0100, Christian Marangi wrote:
> > diff --git a/drivers/net/phy/qcom/Makefile b/drivers/net/phy/qcom/Makefile
> > index 6a68da8aaa7b..43e4d14df8ea 100644
> > --- a/drivers/net/phy/qcom/Makefile
> > +++ b/drivers/net/phy/qcom/Makefile
> > @@ -1,2 +1,3 @@
> >  # SPDX-License-Identifier: GPL-2.0
> > -obj-$(CONFIG_AT803X_PHY)	+= at803x.o
> > +obj-$(CONFIG_AT803X_PHY)	+= at803x.o common.o
> > +obj-$(CONFIG_QCA83XX_PHY)	+= qca83xx.o common.o
> 
> These PHY drivers can be built as modules. You will end up with several
> modules - at803x.ko, qca83xx.ko and common.ko. You don't mark any
> functions in common.c as exported, no module license, no author, no
> description. common.ko is way too generic a name as well.
> 
> Please think about this more and test building these drivers as a
> module.
>

Had some fear about this...

What would be the preferred way for this?

Having a .ko that EXPORT symbol or making the PHY driver .ko to compile
the common.o in it?

Honestly I would like the second option since I would prefer not to
create a .ko with shared function and EXPORT lots of symbols. On SoC it's
expected to have only one of the PHY (at max 2 when the qca807x PHY will
be implemented, with the at808x also present) so the size increase is
minimal.

(just to be more clear, talking about this makefile implementation)

at803x-objs			+= common.o
obj-$(CONFIG_AT803X_PHY)	+= at803x.o
qca83xx-objs			+= common.o
obj-$(CONFIG_QCA83XX_PHY)	+= qca83xx.o
qca808x-objs			+= common.o
obj-$(CONFIG_QCA808X_PHY)	+= qca808x.o

For name of common.c, is qcom_ethphy_common.c a better name?

-- 
	Ansuel

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