[-next,v2] dmaengine: mcf-edma: fix x86_64 allmodconfig compilation warning

[Vinod Koul <vkoul@kernel.org>]

On 14-09-18, 09:11, Angelo Dureghello wrote:
> This patch fixes the compilation warning reported
> during x86_64 allmodconfig build.

How does it do so, I have no clue what to expect. Please describe the
change done here in the log...

Patch title also doesn't tell me anything about the fix.

> 
> Reported-By: Stephen Rothwell <sfr@canb.auug.org.au>
> Signed-off-by: Angelo Dureghello <angelo@sysam.it>
> ---
> Changes for v2:
>   - added Reported-By
> ---
>  drivers/dma/mcf-edma.c                     | 3 ++-
>  include/linux/platform_data/dma-mcf-edma.h | 2 +-
>  2 files changed, 3 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/dma/mcf-edma.c b/drivers/dma/mcf-edma.c
> index 4d30d5302649..e08e2409a102 100644
> --- a/drivers/dma/mcf-edma.c
> +++ b/drivers/dma/mcf-edma.c
> @@ -292,8 +292,9 @@ bool mcf_edma_filter_fn(struct dma_chan *chan, void *param)
>  {
>  	if (chan->device->dev->driver == &mcf_edma_driver.driver) {
>  		struct fsl_edma_chan *mcf_chan = to_fsl_edma_chan(chan);
> +		unsigned int req = *(unsigned int *)param;
>  
> -		return (mcf_chan->slave_id == (u32)param);
> +		return (mcf_chan->slave_id == req);
>  	}
>  
>  	return false;
> diff --git a/include/linux/platform_data/dma-mcf-edma.h b/include/linux/platform_data/dma-mcf-edma.h
> index d718ccfa3421..97cb79bda646 100644
> --- a/include/linux/platform_data/dma-mcf-edma.h
> +++ b/include/linux/platform_data/dma-mcf-edma.h
> @@ -21,7 +21,7 @@ struct dma_slave_map;
>  
>  bool mcf_edma_filter_fn(struct dma_chan *chan, void *param);
>  
> -#define MCF_EDMA_FILTER_PARAM(ch)	((void *)ch)
> +#define MCF_EDMA_FILTER_PARAM(ch)	((int[]) { (ch) })

I dont think you answered me about this, why is this change required and
in the context of current patch, what does it fix?