linux-kernel - Re: [PATCH RFT RESEND linux-next] c6x: dma-mapping: support debug_dma_mapping

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Date:	Fri, 02 Nov 2012 10:44:15 -0600
From:	Shuah Khan <shuah.khan@...com>
To:	msalter@...hat.com, Andrew Morton <akpm@...ux-foundation.org>
Cc:	a-jacquiot@...com, linux-c6x-dev@...ux-c6x.org,
	LKML <linux-kernel@...r.kernel.org>, shuahkhan@...il.com
Subject: Re: [PATCH RFT RESEND linux-next] c6x: dma-mapping: support
 debug_dma_mapping_error

On Fri, 2012-10-26 at 09:40 -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/c6x/include/asm/dma-mapping.h |    1 +
>  1 file changed, 1 insertion(+)

Would you like to this patch go through c6x arch tree or linux-next?
Please let me know your preference.

-- Shuah
> 
> diff --git a/arch/c6x/include/asm/dma-mapping.h b/arch/c6x/include/asm/dma-mapping.h
> index 03579fd..3c69406 100644
> --- a/arch/c6x/include/asm/dma-mapping.h
> +++ b/arch/c6x/include/asm/dma-mapping.h
> @@ -32,6 +32,7 @@ static inline int dma_set_mask(struct device *dev, u64 dma_mask)
>   */
>  static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
>  {
> +	debug_dma_mapping_error(dev, dma_addr);
>  	return dma_addr == ~0;
>  }
>  


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