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

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Message-Id: <20100311091506J.fujita.tomonori@lab.ntt.co.jp>
Date:	Thu, 11 Mar 2010 09:15:19 +0900
From:	FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>
To:	geert@...ux-m68k.org
Cc:	sfr@...b.auug.org.au, dwmw2@...radead.org,
	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org,
	maximlevitsky@...il.com, linux-arch@...r.kernel.org
Subject: Re: DMA_ERROR_CODE (was: Re: linux-next: build failure after merge
 of the 	final tree)

On Wed, 10 Mar 2010 12:03:37 +0100
Geert Uytterhoeven <geert@...ux-m68k.org> wrote:

> On Mon, Mar 1, 2010 at 10:40, Stephen Rothwell <sfr@...b.auug.org.au> wrote:
> > After merging the final tree, today's linux-next build (powerpc
> > allyesconfig) failed like this:
> >
> > drivers/mtd/nand/r852.c:22: error: 'enable_dma' redeclared as different kind of symbol
> > arch/powerpc/include/asm/dma.h:189: note: previous definition of 'enable_dma' was here
> > drivers/mtd/nand/r852.c: In function 'r852_engine_enable':
> > drivers/mtd/nand/r852.c:545: error: implicit declaration of function 'msleep'
> >
> > Caused by commit 67e054e919248fa1db93de727fb9ad49eb700642 ("mtd: nand:
> > Add driver for Ricoh xD/SmartMedia reader") from the mtd.
> >
> > I applied the following patch for today.
> >
> > From: Stephen Rothwell <sfr@...b.auug.org.au>
> > Date: Mon, 1 Mar 2010 20:21:06 +1100
> > Subject: [PATCH] mtd: nand: fix name space clash
> >
> > and include delay.h for msleep().
> 
> Another issue is that this driver uses DMA_ERROR_CODE, which is currently
> defined on powerpc/sparc/x86 only.

Why can't use dma_mapping_error()?
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