[PATCH 1/7] remoteproc: imx: Fix off-by-one error

[Lucas Stach]

Am Montag, den 05.10.2020, 11:53 +0200 schrieb Sascha Hauer:
> size is actually end - start + 1, fix size passed to
> request_sdram_region().
> 
> Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>
> ---
>  drivers/remoteproc/imx_rproc.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/remoteproc/imx_rproc.c b/drivers/remoteproc/imx_rproc.c
> index 370bebe6e2..74a8d8ff2e 100644
> --- a/drivers/remoteproc/imx_rproc.c
> +++ b/drivers/remoteproc/imx_rproc.c
> @@ -305,7 +305,7 @@ static int imx_rproc_addr_init(struct imx_rproc *priv,
>  			break;
>  
>  		res_cpu = request_sdram_region(dev_name(dev), res.start,
> -					       res.end - res.start);
> +					       res.end - res.start + 1);

That's a hand rolled version of resource_size(), I think it's better to
use this function instead.

Regards,
Lucas

>  		if (!res_cpu) {
>  			dev_err(dev, "remap optional addresses failed\n");
>  			return -ENOMEM;