netdev - Re: [PATCH net-next v2] tipc: fix undefined __ipv6_sock_mc

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Date:	Wed, 11 Mar 2015 00:05:12 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	ying.xue@...driver.com
Cc:	willemb@...gle.com, jon.maloy@...csson.com,
	Paul.Gortmaker@...driver.com, erik.hugne@...csson.com,
	fengguang.wu@...el.com, netdev@...r.kernel.org,
	tipc-discussion@...ts.sourceforge.net, kbuild-all@...org
Subject: Re: [PATCH net-next v2] tipc: fix undefined __ipv6_sock_mc_join
 compile error

From: Ying Xue <ying.xue@...driver.com>
Date: Wed, 11 Mar 2015 11:11:37 +0800

> On 03/11/2015 12:47 AM, David Miller wrote:
>> From: Willem de Bruijn <willemb@...gle.com>
>> Date: Tue, 10 Mar 2015 11:41:03 -0400
>> 
>>> On Tue, Mar 10, 2015 at 4:41 AM, Ying Xue <ying.xue@...driver.com> wrote:
>>>> @@ -5,6 +5,7 @@
>>>>  menuconfig TIPC
>>>>         tristate "The TIPC Protocol"
>>>>         depends on INET
>>>> +       depends on (IPV6 || IPV6=n)
>>>
>>> Should this be limited to TIPC_MEDIA_UDP?
>> 
>> I think it should.
>> 
>> 
> 
> My first thought is also same as you. But when the dependency like (IPV6 ||
> IPV6=n) is enforced to TIPC_MEDIA_UDP, it doesn't work in the below case:
> 
> IPV6=m and TIPC=Y.
> 
> In above condition, TIPC_MEDIA_UDP is still set to "Y".

It's because TIPC_MEDIA_UDP is bool, it needs to be a tristate.
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