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

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Date:	Fri, 26 Oct 2012 08:58:51 -0600
From:	Shuah Khan <shuah.khan@...com>
To:	monstr@...str.eu
Cc:	kyungmin.park@...sung.com, m.szyprowski@...sung.com, arnd@...db.de,
	andrzej.p@...sung.com, microblaze-uclinux@...e.uq.edu.au,
	LKML <linux-kernel@...r.kernel.org>, shuahkhan@...il.com
Subject: Re: [PATCH RFT] microblaze: dma-mapping: support
 debug_dma_mapping_error

On Fri, 2012-10-26 at 10:29 +0200, Michal Simek wrote:
> On 10/26/2012 01:29 AM, 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/microblaze/include/asm/dma-mapping.h |    1 +
> >   1 file changed, 1 insertion(+)
> >
> > diff --git a/arch/microblaze/include/asm/dma-mapping.h b/arch/microblaze/include/asm/dma-mapping.h
> > index 01d2282..4451c7a 100644
> > --- a/arch/microblaze/include/asm/dma-mapping.h
> > +++ b/arch/microblaze/include/asm/dma-mapping.h
> > @@ -114,6 +114,7 @@ static inline void __dma_sync(unsigned long paddr,
> >   static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
> >   {
> >   	struct dma_map_ops *ops = get_dma_ops(dev);
> 
> here should be empty line.
> 
> > +	debug_dma_mapping_error(dev, dma_addr);
> >   	if (ops->mapping_error)
> >   		return ops->mapping_error(dev, dma_addr);
> 
> Patch looks good to me. I was greping the latest mainline tree and I can't see
> reference to debug_dma_mapping_error. Can you tell me where this function
> is implemented.
> I have also seen that you have sent several similar patches like this.
> 
> If you want to add it through any other tree here is my ACK:
> 
> Acked-by: Michal Simek <monstr@...str.eu>
> 
> I will definitely keep my eyes on it.

debug_dma_mapping_error() patch is in linux-next. I probably should send
all of these patches marked explicitly for linux-next.

Thanks,
-- Shuah


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