warning introduced in "DMA: AT91: Get residual bytes in dma buffer"

[elen.song]

Hi Arnd:

On 5/31/2013 11:54 PM, Arnd Bergmann wrote:
> Patch 7c407d3e "DMA: AT91: Get residual bytes in dma buffer"
> causes a build warning
>
> /git/arm-soc/drivers/dma/at_hdmac.c:424:13: warning: 'atc_cleanup_descriptors' defined but not used [-Wunused-function]
>   static void atc_cleanup_descriptors(struct at_dma_chan *atchan)
>               ^
>
> Signed-off-by: Arnd Bergmann <arnd at arndb.de>
> ---
>
> This may not be the right solution, but it should get fixed
> in linux-next in some way.
>
> Elen, please address this appropriately.
OK.
>
> 	Arnd
>
> diff --git a/drivers/dma/at_hdmac.c b/drivers/dma/at_hdmac.c
> index 6db5228..09929c8 100644
> --- a/drivers/dma/at_hdmac.c
> +++ b/drivers/dma/at_hdmac.c
> @@ -421,7 +421,7 @@ static void atc_complete_all(struct at_dma_chan *atchan)
>    *
>    * Called with atchan->lock held and bh disabled
>    */
> -static void atc_cleanup_descriptors(struct at_dma_chan *atchan)
> +static void __maybe_unused atc_cleanup_descriptors(struct at_dma_chan *atchan)
>   {
>   	struct at_desc	*desc, *_desc;
>   	struct at_desc	*child;
>
Hi Nicolas and Ludovic:

I think atc_cleanup_descriptors could be removed, because ATC_DONE will 
no longer support, what you think?

Best Regards
Elen song