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

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Date:	Thu, 15 Nov 2012 11:05:12 -0700
From:	Shuah Khan <shuah.khan@...com>
To:	benh@...nel.crashing.org, m.szyprowski@...sung.com
Cc:	kyungmin.park@...sung.com, paulus@...ba.org,
	david@...son.dropbear.id.au, arnd@...db.de, andrzej.p@...sung.com,
	linuxppc-dev@...ts.ozlabs.org, LKML <linux-kernel@...r.kernel.org>,
	shuahkhan@...il.com
Subject: Re: [PATCH RFT RESEND linux-next] powerpc: dma-mapping: support
 debug_dma_mapping_error

On Fri, 2012-10-26 at 10:08 -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/powerpc/include/asm/dma-mapping.h |    1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/arch/powerpc/include/asm/dma-mapping.h b/arch/powerpc/include/asm/dma-mapping.h
> index 7816087..e27e9ad 100644
> --- a/arch/powerpc/include/asm/dma-mapping.h
> +++ b/arch/powerpc/include/asm/dma-mapping.h
> @@ -172,6 +172,7 @@ 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);
>  

Marek,

This one is for powerpc to go through your tree with the other arch
debug_dma_mapping_error() patches.

Thanks,
-- Shuah

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