linux-kernel - Re: NETPOLL=y , NETDEVICES=n compile error ( Re: 2.6.23-rc1-mm1 )

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Message-ID: <46AF0B8C.7070006@googlemail.com>
Date:	Tue, 31 Jul 2007 12:14:36 +0200
From:	Gabriel C <nix.or.die@...glemail.com>
To:	Jarek Poplawski <jarkao2@...pl>
CC:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
	jason.wessel@...driver.com, amitkale@...syssoft.com
Subject: Re: NETPOLL=y , NETDEVICES=n compile error ( Re: 2.6.23-rc1-mm1 )

Jarek Poplawski wrote:
> On 28-07-2007 20:42, Gabriel C wrote:
>> Andrew Morton wrote:
>>> On Sat, 28 Jul 2007 17:44:45 +0200 Gabriel C <nix.or.die@...glemail.com> wrote:
>>>
>>>> Hi,
>>>>
>>>> I got this compile error with a randconfig ( http://194.231.229.228/MM/randconfig-auto-82.broken.netpoll.c ).
>>>>
>>>> ...
>>>>
>>>> net/core/netpoll.c: In function 'netpoll_poll':
>>>> net/core/netpoll.c:155: error: 'struct net_device' has no member named 'poll_controller'
>>>> net/core/netpoll.c:159: error: 'struct net_device' has no member named 'poll_controller'
>>>> net/core/netpoll.c: In function 'netpoll_setup':
>>>> net/core/netpoll.c:670: error: 'struct net_device' has no member named 'poll_controller'
>>>> make[2]: *** [net/core/netpoll.o] Error 1
>>>> make[1]: *** [net/core] Error 2
>>>> make: *** [net] Error 2
>>>> make: *** Waiting for unfinished jobs....
>>>>
>>>> ...
>>>>
>>>>
>>>> I think is because KGDBOE selects just NETPOLL.
>>>>
>>> Looks like it.
>>>
>>> Select went and selected NETPOLL and NETPOLL_TRAP but things like
>>> CONFIG_NETDEVICES and CONFIG_NET_POLL_CONTROLLER remain unset.  `select'
>>> remains evil.
> ...
>> I think there may be a logical issue ( again if I got it right ).
>> We need some ethernet card to work with kgdboe right ? but we don't have any if !NETDEVICES && !NET_ETHERNET.
>>
>> So maybe some ' depends on ... && NETDEVICES!=n && NET_ETHERNET!=n ' is needed too ? 
> 
> IMHO, the only logical issue here is netpoll.c mustn't use 
> CONFIG_NET_POLL_CONTROLLER code without #ifdef if it doesn't
> add this dependency itself.
> 

Well it does if NETDEVICES && if NET_ETHERNET which booth are N when !NETDEVICES is why KGDBOE uses select and not depends on.

Now KGDBOE just selects NETPOLL and NETPOLL_TRAP.
Adding 'select CONFIG_NET_POLL_CONTROLLER' let kgdboe compiles but the question is does it work without any ethernet card ?

> Cheers,
> Jarek P. 
> 


Gabriel
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