Subject: Re: [PATCH] net: Use of_property_read_bool() for boolean properties

From: Simon Horman <[email-masked]>
Date: Sat, 11 Mar 2023 12:50:30 +0100

On Fri, Mar 10, 2023 at 08:47:16AM -0600, Rob Herring wrote:
> It is preferred to use typed property access functions (i.e.
> of_property_read_<type> functions) rather than low-level
> of_get_property/of_find_property functions for reading properties.
> Convert reading boolean properties to to of_property_read_bool().
> 
> Signed-off-by: Rob Herring <[email-masked]>

Reviewed-by: Simon Horman <[email-masked]>

...

> diff --git a/drivers/net/ethernet/via/via-velocity.c b/drivers/net/ethernet/via/via-velocity.c
> index a502812ac418..86f7843b4591 100644
> --- a/drivers/net/ethernet/via/via-velocity.c
> +++ b/drivers/net/ethernet/via/via-velocity.c
> @@ -2709,8 +2709,7 @@ static int velocity_get_platform_info(struct velocity_info *vptr)
>  	struct resource res;
>  	int ret;
>  
> -	if (of_get_property(vptr->dev->of_node, "no-eeprom", NULL))
> -		vptr->no_eeprom = 1;
> +	vptr->no_eeprom = of_property_read_bool(vptr->dev->of_node, "no-eeprom");

As per my comment on "[PATCH] nfc: mrvl: Use of_property_read_bool() for
boolean properties".

I'm not that enthusiastic about assigning a bool value to a field
with an integer type. But that is likely a topic for another patch.

>  	ret = of_address_to_resource(vptr->dev->of_node, 0, &res);
>  	if (ret) {

...

> diff --git a/drivers/net/wan/fsl_ucc_hdlc.c b/drivers/net/wan/fsl_ucc_hdlc.c
> index 1c53b5546927..47c2ad7a3e42 100644
> --- a/drivers/net/wan/fsl_ucc_hdlc.c
> +++ b/drivers/net/wan/fsl_ucc_hdlc.c
> @@ -1177,14 +1177,9 @@ static int ucc_hdlc_probe(struct platform_device *pdev)
>  	uhdlc_priv->dev = &pdev->dev;
>  	uhdlc_priv->ut_info = ut_info;
>  
> -	if (of_get_property(np, "fsl,tdm-interface", NULL))
> -		uhdlc_priv->tsa = 1;
> -
> -	if (of_get_property(np, "fsl,ucc-internal-loopback", NULL))
> -		uhdlc_priv->loopback = 1;
> -
> -	if (of_get_property(np, "fsl,hdlc-bus", NULL))
> -		uhdlc_priv->hdlc_bus = 1;
> +	uhdlc_priv->tsa = of_property_read_bool(np, "fsl,tdm-interface");

Here too.

> +	uhdlc_priv->loopback = of_property_read_bool(np, "fsl,ucc-internal-loopback");
> +	uhdlc_priv->hdlc_bus = of_property_read_bool(np, "fsl,hdlc-bus");
>  
>  	if (uhdlc_priv->tsa == 1) {
>  		utdm = kzalloc(sizeof(*utdm), GFP_KERNEL);

...