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

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Date:	Sun, 4 Nov 2012 19:08:59 -0600
From:	Richard Kuo <rkuo@...eaurora.org>
To:	Shuah Khan <shuah.khan@...com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>, arnd@...db.de,
	kyungmin.park@...sung.com, m.szyprowski@...sung.com,
	linas@...eaurora.org, linux-hexagon@...r.kernel.org,
	LKML <linux-kernel@...r.kernel.org>, shuahkhan@...il.com
Subject: Re: [PATCH RFT RESEND linux-next] hexagon: dma-mapping: support
 debug_dma_mapping_error

On Fri, Nov 02, 2012 at 10:48:21AM -0600, Shuah Khan wrote:
> On Fri, 2012-10-26 at 09:43 -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/hexagon/include/asm/dma-mapping.h |    1 +
> >  1 file changed, 1 insertion(+)
> 
> Would you like se this patch go through arch tree or linux-next? Please
> let me know your preference.
> 
> -- Shuah
> > 
> > diff --git a/arch/hexagon/include/asm/dma-mapping.h b/arch/hexagon/include/asm/dma-mapping.h
> > index 85e9935..1957c4c 100644
> > --- a/arch/hexagon/include/asm/dma-mapping.h
> > +++ b/arch/hexagon/include/asm/dma-mapping.h
> > @@ -65,6 +65,7 @@ static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
> >  {
> >  	struct dma_map_ops *dma_ops = get_dma_ops(dev);
> >  
> > +	debug_dma_mapping_error(dev, dma_addr);
> >  	if (dma_ops->mapping_error)
> >  		return dma_ops->mapping_error(dev, dma_addr);
> >  
> 
> 

This looks fine; I'm OK with this going through linux-next.  Thanks!

Acked-by: Richard Kuo <rkuo@...eaurora.org>


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