linux-kernel - Re: linux-next: build failure after merge of the final tree (net-next tree related)

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Message-Id: <20120920.164558.2281417114805373564.davem@davemloft.net>
Date:	Thu, 20 Sep 2012 16:45:58 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	mika.westerberg@...ux.intel.com
Cc:	sfr@...b.auug.org.au, netdev@...r.kernel.org,
	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: linux-next: build failure after merge of the final tree
 (net-next tree related)

From: Mika Westerberg <mika.westerberg@...ux.intel.com>
Date: Thu, 20 Sep 2012 12:10:14 +0300

> On Thu, Sep 20, 2012 at 05:36:22PM +1000, Stephen Rothwell wrote:
>> Hi all,
>> 
>> After merging the final tree, today's linux-next build (powerpc
>> allyesconfig) failed like this:
>> 
>> drivers/net/ethernet/i825xx/znet.c: In function 'hardware_init':
>> drivers/net/ethernet/i825xx/znet.c:868:2: error: implicit declaration of function 'isa_virt_to_bus' [-Werror=implicit-function-declaration]
>> 
>> Caused by commit 1d3ff76759b7 ("i825xx: znet: fix compiler warnings when
>> building a 64-bit kernel").  Is there some Kconfig dependency missing (CONFIG_ISA)?
> 
> If we make it dependent on CONFIG_ISA then the driver cannot be built with
> 64-bit kernel. Then again is there someone running 64-bit kernel on Zenith
> Z-note notebook? From the pictures it looks like very ancient "laptop".
> 
> An alternative is to make it depend on X86 like this:

I think the powerpc port is at fault here.

Part of being able to advertise ISA_DMA_API is providing isa_virt_to_bus().
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