[PATCH] dma-mapping: fix size when of_dma_get_range() fails

[Grant Likely]

On Wed, 24 Dec 2014 16:56:50 -0500
, Murali Karicheri <m-karicheri2 at ti.com>
 wrote:
> When call to of_dma_get_range() fails, the code currently set size
> to dev->coherent_dma_mask instead of dev->coherent_dma_mask + 1. Fix this
> to make the code consistent with the case when size is obtained from
> dma-range property.
> 
> Signed-off-by: Murali Karicheri <m-karicheri2 at ti.com>
> Reviewed-by: Arnd Bergmann <arnd at arndb.de>

Looks okay to me. I've merged it into my tree.

g.

> ---
>  drivers/of/platform.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/of/platform.c b/drivers/of/platform.c
> index a54ec10..af9aef1 100644
> --- a/drivers/of/platform.c
> +++ b/drivers/of/platform.c
> @@ -185,7 +185,7 @@ static void of_dma_configure(struct device *dev)
>  	ret = of_dma_get_range(dev->of_node, &dma_addr, &paddr, &size);
>  	if (ret < 0) {
>  		dma_addr = offset = 0;
> -		size = dev->coherent_dma_mask;
> +		size = dev->coherent_dma_mask + 1;
>  	} else {
>  		offset = PFN_DOWN(paddr - dma_addr);
>  		dev_dbg(dev, "dma_pfn_offset(%#08lx)\n", offset);
> -- 
> 1.7.9.5
>