linux-kernel - Re: Latest git build failure on s390

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Date:	Fri, 13 Aug 2010 15:45:34 +0900
From:	FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>
To:	heiko.carstens@...ibm.com
Cc:	sachinp@...ibm.com, linux-s390@...r.kernel.org,
	linux-kernel@...r.kernel.org, fujita.tomonori@....ntt.co.jp,
	akpm@...ux-foundation.org, linux-arch@...r.kernel.org
Subject: Re: Latest git build failure on s390 - dma_get_cache_alignment()

On Thu, 12 Aug 2010 10:07:01 +0200
Heiko Carstens <heiko.carstens@...ibm.com> wrote:

> Crap. By far not all converted architectures include dma-mapping-common.h
> from their private dma-mapping header file. So the patch would probably
> introduce a couple of new compile errors.
> Looks like we need an explicit ifdef.
> 
> Signed-off-by: Heiko Carstens <heiko.carstens@...ibm.com>
> ---
> 
>  include/linux/dma-mapping.h |    2 ++
>  1 file changed, 2 insertions(+)
> 
> 
> diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h
> index e0670a5..ce29b81 100644
> --- a/include/linux/dma-mapping.h
> +++ b/include/linux/dma-mapping.h
> @@ -142,6 +142,7 @@ static inline int dma_set_seg_boundary(struct device *dev, unsigned long mask)
>  		return -EIO;
>  }
>  
> +#ifdef CONFIG_HAS_DMA
>  static inline int dma_get_cache_alignment(void)
>  {
>  #ifdef ARCH_DMA_MINALIGN
> @@ -149,6 +150,7 @@ static inline int dma_get_cache_alignment(void)
>  #endif
>  	return 1;
>  }
> +#endif

Very sorry about this.

Acked-by: FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>

Looks like we had better to clean up dma-mapping headers on both
HAS_DMA and !HAS_DMA though.
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