linux-kernel - Re: bnx2 fails to compile on parisc because of missing get_dma

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Date:	Thu, 17 Jun 2010 00:00:01 -0400
From:	Mike Frysinger <vapier@...too.org>
To:	Michael Chan <mchan@...adcom.com>
Cc:	James Bottomley <JBottomley@...ell.com>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"linux-parisc@...r.kernel.org" <linux-parisc@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>
Subject: Re: bnx2 fails to compile on parisc because of missing get_dma_ops()

On Wed, Jun 16, 2010 at 11:53 PM, Michael Chan wrote:
> Mike Frysinger wrote:
>> > The commit that causes the problem:
>> >
>> > commit a33fa66bcf365ffe5b79d1ae1d3582cc261ae56e
>> > Author: Michael Chan <mchan@...adcom.com>
>> > Date:   Thu May 6 08:58:13 2010 +0000
>> >
>> >    bnx2: Add prefetches to rx path.
>> >
>> > Looks fairly innocuous by the description.
>> >
>> > Should parisc have a get_dma_ops()?  We don't need one
>> because our dma
>> > ops are per platform not per bus.
>>
>> looks like it'll be broken on more than just parisc:
>> $ grep get_dma_ops arch/*/include/asm/ -rl | cut -d/ -f 2
>> alpha
>> ia64
>> microblaze
>> powerpc
>> sh
>> sparc
>> x86
>
> Most of these archs use the dma functions in:
>
> <asm-genric/dma-mapping-common.h>
>
> so it's not a problem.

the grep is showing only the arches that define get_dma_ops (and so
the new code works).  you'd have to invert the list to see the ones
which do not define get_dma_ops(), and the inverted list is larger.
that was merely my point.
-mike
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