linux-kernel - Re: FEC_MPC52xx

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Message-ID: <20071031164231.GP3369@nd47.coderock.org>
Date:	Wed, 31 Oct 2007 17:42:32 +0100
From:	Domen Puncer <domen.puncer@...argo.com>
To:	Gabriel C <nix.or.die@...glemail.com>
Cc:	Dave Jones <davej@...hat.com>,
	Linux Kernel <linux-kernel@...r.kernel.org>
Subject: Re: FEC_MPC52xx_MDIO oddness.

On 31/10/07 17:30 +0100, Gabriel C wrote:
> Domen Puncer wrote:
> > On 31/10/07 10:22 -0400, Dave Jones wrote:
> >> The Kconfig for this reads..
> >>
> >> +config FEC_MPC52xx_MDIO
> >> +       bool "MPC52xx FEC MDIO bus driver"
> >> +       depends on FEC_MPC52xx
> >> +       default y
> >> +       ---help---
> >> +         The MPC5200's FEC can connect to the Ethernet either with
> >> +         an external MII PHY chip or 10 Mbps 7-wire interface
> >> +         (Motorola? industry standard).
> >> +         If your board uses an external PHY connected to FEC, enable this.
> >> +         If not sure, enable.
> >> +         If compiled as module, it will be called 'fec_mpc52xx_phy.ko'.
> >>
> >> Because this is bool, it'll never be compiled as a module.
> >> Given that fec_mpc52xx_phy.c has a MODULE_LICENSE()
> >> Should this be a tristate perhaps ?
> > 
> > It's ok, it will be compiled as module if fec driver is compiled as
> > module, and built-in if fec is built-in.
> > 
> > from Makefile:
> > obj-$(CONFIG_FEC_MPC52xx) += fec_mpc52xx.o
> > ifeq ($(CONFIG_FEC_MPC52xx_MDIO),y)
> >         obj-$(CONFIG_FEC_MPC52xx) += fec_mpc52xx_phy.o
> > endif
> > 
> > Yes, a bit weird, but it's best I could come up with.
> > (fec_mdio=m and fec=y is an invalid case, that I wanted to avoid).
> 
> Could you please fix this warnings as well ?
> 
> 
> http://groups.google.com/group/fa.linux.kernel/browse_thread/thread/13c9d93a7afa60e2

I saw the bug reports, but unfortunately don't have a smart idea for
the solution (moving the driver into a separate Kconfig might do it),
so I'm waiting for Sam's input on this.


> 
> Regards,
> 
> Gabriel

-- 
Domen Puncer | Research & Development
.............................................................................................
Telargo d.o.o. | Zagrebška cesta 20 | 2000 Maribor | Slovenia
.............................................................................................
www.telargo.com
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