netdev - Re: [PATCH] phylib: Don't allow core of phylib to build as a module

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Date:	Mon, 2 Jun 2008 14:24:49 -0500 (CDT)
From:	Kumar Gala <galak@...nel.crashing.org>
To:	Adrian Bunk <adrian.bunk@...ial.fi>
cc:	Jeff Garzik <jeff@...zik.org>, netdev@...r.kernel.org,
	linuxppc-dev@...abs.org
Subject: Re: [PATCH] phylib: Don't allow core of phylib to build as a module

On Mon, 2 Jun 2008, Adrian Bunk wrote:

> On Mon, Jun 02, 2008 at 11:25:14AM -0500, Kumar Gala wrote:
> >
> > On Jun 2, 2008, at 11:03 AM, Jeff Garzik wrote:
> >
> >> Kumar Gala wrote:
> >>> The core portions of the phylib aren't capable of being used as
> >>> a module.  This isn't really any different than something like i2c
> >>> in that the bus driver and core need to be built into the kernel.
> >>> Signed-off-by: Kumar Gala <galak@...nel.crashing.org>
> >>> ---
> >>> Jeff, please consider this for 2.6.26 as w/o it we get build issues
> >>> if phylib is config'd as a module on ppc.
> >>> drivers/net/phy/Kconfig |    2 +-
> >>> 1 files changed, 1 insertions(+), 1 deletions(-)
> >>> diff --git a/drivers/net/phy/Kconfig b/drivers/net/phy/Kconfig
> >>> index 6eb2d31..ab04cc7 100644
> >>> --- a/drivers/net/phy/Kconfig
> >>> +++ b/drivers/net/phy/Kconfig
> >>> @@ -3,7 +3,7 @@
> >>> #
> >>> menuconfig PHYLIB
> >>> -	tristate "PHY Device support and infrastructure"
> >>> +	bool "PHY Device support and infrastructure"
> >>> 	depends on !S390
> >>> 	depends on NET_ETHERNET
> >>
> >> What are the issues?
> >>
> >> The core _should_ be able to be built as a module.
> >
> > The core provides functions like phy_read/phy_write.  Andy has recently
> > introduced board level workaround/fixups.  The problem is these
> > workarounds tend to use phy_read/phy_write and the board/platform code is
> > not built as modules.
> >
> > So we get errors like:
> >
> > arch/powerpc/platforms/built-in.o: In function `mpc8568_mds_phy_fixups':
> > /home/galak/git/master/powerpc/arch/powerpc/platforms/85xx/
> > mpc85xx_mds.c:99: undefined reference to `phy_write'
> >...
>
> At first glance PHYLIB=n might also cause similar problems.
>
> Please send me the failing .config and I'll cook up a fix.
>
> > - k
>
> cu
> Adrian

defconfig attached.  I think Scott might be right in that the simple fix
would be to select PHYLIB from the MPC8568_MDS config in
arch/powerpc/platforms/85xx/Kconfig.

- k
Download attachment "phylib-module.config.gz" of type "APPLICATION/x-gzip" (9536 bytes)