[U-Boot] [PATCH v6 5/8] usb: dwc2: use dev_read_bool() instead of fdt_getprop()

[Heiko Stuebner <heiko@sntech.de>]

Hi,

Am Mittwoch, 21. Juni 2017, 11:58:24 CEST schrieb Meng Dongyang:
> Use dev_read_bool() instead of fdt_getprop() to get the property
> from DTS. And add a comment for "hnp-srp-disable" property to
> fully describe its effect.
> 
> Signed-off-by: Meng Dongyang <daniel.meng@rock-chips.com>
> ---
> 
> Changes in v6:
> - New patch
> - Use dev_read_bool() instead of fdt_getprop()
> - Add a comment for "hnp-srp-disable" feature
> 
>  drivers/usb/host/dwc2.c | 15 ++++++---------
>  1 file changed, 6 insertions(+), 9 deletions(-)
> 
> diff --git a/drivers/usb/host/dwc2.c b/drivers/usb/host/dwc2.c
> index 841e596..3996f67 100644
> --- a/drivers/usb/host/dwc2.c
> +++ b/drivers/usb/host/dwc2.c
> @@ -43,6 +43,10 @@ struct dwc2_priv {
>  	struct dwc2_core_regs *regs;
>  	int root_hub_devnum;
>  	bool ext_vbus;
> +	/*
> +	 * The hnp/srp capability must be disabled if the platform
> +	 * does't support hnp/srp. Otherwise the force mode can't work.
> +	 */
>  	bool hnp_srp_disable;
>  	bool oc_disable;
>  };
> @@ -1247,15 +1251,8 @@ static int dwc2_usb_ofdata_to_platdata(struct udevice *dev)
>  		return -EINVAL;
>  	priv->regs = (struct dwc2_core_regs *)addr;
>  
> -	prop = fdt_getprop(gd->fdt_blob, dev_of_offset(dev),
> -			   "disable-over-current", NULL);
> -	if (prop)
> -		priv->oc_disable = true;
> -
> -	prop = fdt_getprop(gd->fdt_blob, dev_of_offset(dev),
> -			   "hnp-srp-disable", NULL);
> -	if (prop)
> -		priv->hnp_srp_disable = true;
> +	priv->oc_disable = dev_read_bool(dev, "disable-over-current");
> +	priv->hnp_srp_disable = dev_read_bool(dev, "hnp-srp-disable");

with this patch applied, I get

drivers/usb/host/dwc2.c: In function ‘dwc2_usb_ofdata_to_platdata’:
drivers/usb/host/dwc2.c:1246:14: warning: unused variable ‘prop’ [-Wunused-variable]
  const void *prop;
              ^~~~

so you might want to remove the prop var as well?