linux-kernel - Re: [BUILD-FAILURE] next-20091015 - vbus_enet driver breaks with allmodconfig

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Date:	Thu, 15 Oct 2009 11:42:10 -0700
From:	Randy Dunlap <randy.dunlap@...cle.com>
To:	Gregory Haskins <gregory.haskins@...il.com>
Cc:	Gregory Haskins <ghaskins@...ell.com>,
	Kamalesh Babulal <kamalesh@...ux.vnet.ibm.com>,
	sfr@...b.auug.org.au, greg@...ah.com, netdev@...r.kernel.org,
	LKML <linux-kernel@...r.kernel.org>, linux-next@...r.kernel.org
Subject: Re: [BUILD-FAILURE] next-20091015 - vbus_enet driver breaks with
 allmodconfig

On Thu, 15 Oct 2009 13:39:44 -0400 Gregory Haskins wrote:

> Gregory Haskins wrote:
> >>>> On 10/15/2009 at  6:48 AM, in message
> > <20091015104852.GA6740@...ux.vnet.ibm.com>, Kamalesh Babulal
> > <kamalesh@...ux.vnet.ibm.com> wrote: 
> >> Hi Gregory,
> >>
> >> 	While building next-20091015 with allmodconfig on the powerpc
> >> vbus-enet driver breaks
> > 
> > Hi Kamalesh,
> > 
> > I'll take a look at this and get a fix submitted today.
> > 
> > Kind Regards,
> > -Greg
> > 
> >> MODPOST 2492 modules
> >> ERROR: ".vbus_driver_register" [drivers/net/vbus-enet.ko] undefined!
> >> ERROR: ".vbus_driver_unregister" [drivers/net/vbus-enet.ko] undefined!
> >> ERROR: ".vbus_driver_ioq_alloc" [drivers/net/vbus-enet.ko] undefined!
> >>
> >> CONFIG_VBUS_ENET=m
> >> CONFIG_VBUS_ENET_DEBUG=y
> >> CONFIG_VBUS_PROXY=n
> 
> Hi Kamalesh,
> 
> I am having difficulty reproducing the problem.  When I look at the
> Kconfig, I see that VBUS_ENET has a "select VBUS_PROXY" as I would
> expect.  Additionally, if I run allmodconfig I can confirm that I get
> VBUS_ENET=m, VBUS_PROXY=y:

Greg,

Did you try to reproduce it with the ppc64 config file?
allmodconfig on what arch?

I think the problem is that arch/x86/Kconfig says:

source "drivers/vbus/Kconfig"

and that should actually be in drivers/Kconfig, so that it applies
to ppc64 et al, not just x86.



> ghaskins@dev:~/sandbox/git/fabric/linux-2.6-next> rm .config
> ghaskins@dev:~/sandbox/git/fabric/linux-2.6-next> make allmodconfig
> scripts/kconfig/conf -m arch/x86/Kconfig
> #
> # configuration written to .config
> #
> ghaskins@dev:~/sandbox/git/fabric/linux-2.6-next> grep -i vbus .config
> CONFIG_VBUS_PROXY=y
> CONFIG_VBUS_PCIBRIDGE=y
> CONFIG_VBUS_ENET=m
> CONFIG_VBUS_ENET_DEBUG=y
> CONFIG_USB_GADGET_VBUS_DRAW=2
> CONFIG_USB_GPIO_VBUS=m
> 
> I am not sure how your environment could have generated the VBUS_PROXY=n
> outcome.  Does anyone have any ideas?
> 
> -Greg


---
~Randy
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