Re: DMA_ERROR_CODE (was: Re: linux-next: build failure after mergeof the final tree)

[FUJITA Tomonori]

On Wed, 10 Mar 2010 12:03:37 +0100
Geert Uytterhoeven <geert@xxxxxxxxxxxxxx> wrote:

> On Mon, Mar 1, 2010 at 10:40, Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx> 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@xxxxxxxxxxxxxxxx>
> > 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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