linux-kernel - Re: [PATCHv2 1/3] net: phy: prevent linking breakage

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Date:	Tue, 04 Jun 2013 18:01:07 +0200
From:	Arnd Bergmann <arnd@...db.de>
To:	linux-arm-kernel@...ts.infradead.org
Cc:	Florian Fainelli <florian@...nwrt.org>,
	Russell King <linux@....linux.org.uk>, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, alexandre.belloni@...e-electrons.com,
	kernel@...gutronix.de, shawn.guo@...aro.org,
	David Miller <davem@...emloft.net>
Subject: Re: [PATCHv2 1/3] net: phy: prevent linking breakage

On Tuesday 04 June 2013 16:36:50 Florian Fainelli wrote:
> It seems to me that what David proposes is to have say an
> arch/arm/mach-foo/phy-fixups.c file which is only enabled when
> CONFIG_PHYLIB is set (obj-$(CONFIG_PHYLIB) += phy-fixup.o), such that
> it does not need to have any conditionnals when calling
> phy_register_fixup. This sounds a little unusual, but why not.

I don't think it would actually help us, because then we still need
to declare a local function that gets called from the board init
code. Instead of doing

	if (IS_ENABLED(CONFIG_PHYLIB))
		 phy_register_fixup_for_uid(phy_id, foo_phy_fixup);

we would then do

	if (IS_ENABLED(CONFIG_PHYLIB))
		foo_phy_fixup_register();

which is not much different at all.

	Arnd
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