linux-kernel - Re: [PATCH RFT linux-next] alpha: dma-mapping: support debug_dma_mapping

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Date:	Wed, 27 Mar 2013 19:59:48 +1300
From:	Michael Cree <mcree@...on.net.nz>
To:	Shuah Khan <shuah.khan@...com>
Cc:	rth@...ddle.net, m.szyprowski@...sung.com,
	ink@...assic.park.msu.ru, mattst88@...il.com,
	kyungmin.park@...sung.com, arnd@...db.de, andrzej.p@...sung.com,
	linux-alpha@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>,
	shuahkhan@...il.com
Subject: Re: [PATCH RFT linux-next] alpha: dma-mapping: support
 debug_dma_mapping_error

On Thu, Nov 15, 2012 at 10:49:28AM -0700, Shuah Khan wrote:
> On Fri, 2012-10-26 at 10:32 -0600, Shuah Khan wrote:
> > Add support for debug_dma_mapping_error() call to avoid warning from
> > debug_dma_unmap() interface when it checks for mapping error checked
> > status. Without this patch, device driver failed to check map error
> > warning is generated.
> > 
> > Signed-off-by: Shuah Khan <shuah.khan@...com>
> > ---
> >  arch/alpha/include/asm/dma-mapping.h |    1 +
> >  1 file changed, 1 insertion(+)
> > 
> > diff --git a/arch/alpha/include/asm/dma-mapping.h b/arch/alpha/include/asm/dma-mapping.h
> > index dfa32f0..b4d483b 100644
> > --- a/arch/alpha/include/asm/dma-mapping.h
> > +++ b/arch/alpha/include/asm/dma-mapping.h
> > @@ -32,6 +32,7 @@ static inline void dma_free_attrs(struct device *dev, size_t size,
> >  
> >  static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
> >  {
> > +	debug_dma_mapping_error(dev, dma_addr);
> >  	return get_dma_ops(dev)->mapping_error(dev, dma_addr);
> >  }
> >  
> 
> Marek,
> 
> This is for alpha to go through your tree.

Given that this does not appear to be upstream yet I'll take it through
the Alpha tree.

Cheers
Michael.

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