Re: [PATCH] pinctrl: Use of_property_present() for testing DT property presence

[Andre Przywara]

On Fri, 10 Mar 2023 08:47:20 -0600
Rob Herring <robh@xxxxxxxxxx> 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. As
> part of this, convert of_get_property/of_find_property calls to the
> recently added of_property_present() helper when we just want to test
> for presence of a property and nothing more.
> 
> Signed-off-by: Rob Herring <robh@xxxxxxxxxx>
> ---
>  drivers/pinctrl/mediatek/pinctrl-moore.c |  2 +-
>  drivers/pinctrl/pinctrl-single.c         |  4 ++--
>  drivers/pinctrl/pinctrl-stmfx.c          |  2 +-
>  drivers/pinctrl/renesas/pinctrl.c        |  4 ++--
>  drivers/pinctrl/stm32/pinctrl-stm32.c    |  2 +-
>  drivers/pinctrl/sunxi/pinctrl-sunxi.c    | 20 ++++++++++----------


For sunxi: Reviewed-by: Andre Przywara <andre.przywara@xxxxxxx>

Cheers,
Andre

>  6 files changed, 17 insertions(+), 17 deletions(-)
> 
> diff --git a/drivers/pinctrl/mediatek/pinctrl-moore.c b/drivers/pinctrl/mediatek/pinctrl-moore.c
> index 007b98ce5631..8649a2f9d324 100644
> --- a/drivers/pinctrl/mediatek/pinctrl-moore.c
> +++ b/drivers/pinctrl/mediatek/pinctrl-moore.c
> @@ -586,7 +586,7 @@ static int mtk_build_gpiochip(struct mtk_pinctrl *hw)
>  	 * Documentation/devicetree/bindings/gpio/gpio.txt on how to
>  	 * bind pinctrl and gpio drivers via the "gpio-ranges" property.
>  	 */
> -	if (!of_find_property(hw->dev->of_node, "gpio-ranges", NULL)) {
> +	if (!of_property_present(hw->dev->of_node, "gpio-ranges")) {
>  		ret = gpiochip_add_pin_range(chip, dev_name(hw->dev), 0, 0,
>  					     chip->ngpio);
>  		if (ret < 0) {
> diff --git a/drivers/pinctrl/pinctrl-single.c b/drivers/pinctrl/pinctrl-single.c
> index 190923757cda..0dabbcf68b9f 100644
> --- a/drivers/pinctrl/pinctrl-single.c
> +++ b/drivers/pinctrl/pinctrl-single.c
> @@ -939,11 +939,11 @@ static int pcs_parse_pinconf(struct pcs_device *pcs, struct device_node *np,
>  
>  	/* cacluate how much properties are supported in current node */
>  	for (i = 0; i < ARRAY_SIZE(prop2); i++) {
> -		if (of_find_property(np, prop2[i].name, NULL))
> +		if (of_property_present(np, prop2[i].name))
>  			nconfs++;
>  	}
>  	for (i = 0; i < ARRAY_SIZE(prop4); i++) {
> -		if (of_find_property(np, prop4[i].name, NULL))
> +		if (of_property_present(np, prop4[i].name))
>  			nconfs++;
>  	}
>  	if (!nconfs)
> diff --git a/drivers/pinctrl/pinctrl-stmfx.c b/drivers/pinctrl/pinctrl-stmfx.c
> index 1181c4b506b1..3c031692e44d 100644
> --- a/drivers/pinctrl/pinctrl-stmfx.c
> +++ b/drivers/pinctrl/pinctrl-stmfx.c
> @@ -632,7 +632,7 @@ static int stmfx_pinctrl_probe(struct platform_device *pdev)
>  	pctl->dev = &pdev->dev;
>  	pctl->stmfx = stmfx;
>  
> -	if (!of_find_property(np, "gpio-ranges", NULL)) {
> +	if (!of_property_present(np, "gpio-ranges")) {
>  		dev_err(pctl->dev, "missing required gpio-ranges property\n");
>  		return -EINVAL;
>  	}
> diff --git a/drivers/pinctrl/renesas/pinctrl.c b/drivers/pinctrl/renesas/pinctrl.c
> index b74147800319..5c71e168b370 100644
> --- a/drivers/pinctrl/renesas/pinctrl.c
> +++ b/drivers/pinctrl/renesas/pinctrl.c
> @@ -125,8 +125,8 @@ static int sh_pfc_dt_subnode_to_map(struct pinctrl_dev *pctldev,
>  	 * inside a subnode nor across subnodes.
>  	 */
>  	if (!pmx->func_prop_name) {
> -		if (of_find_property(np, "groups", NULL) ||
> -		    of_find_property(np, "pins", NULL)) {
> +		if (of_property_present(np, "groups")||
> +		    of_property_present(np, "pins")) {
>  			pmx->func_prop_name = "function";
>  			pmx->groups_prop_name = "groups";
>  			pmx->pins_prop_name = "pins";
> diff --git a/drivers/pinctrl/stm32/pinctrl-stm32.c b/drivers/pinctrl/stm32/pinctrl-stm32.c
> index cb33a23ab0c1..66a25becd8f5 100644
> --- a/drivers/pinctrl/stm32/pinctrl-stm32.c
> +++ b/drivers/pinctrl/stm32/pinctrl-stm32.c
> @@ -1374,7 +1374,7 @@ static struct irq_domain *stm32_pctrl_get_irq_domain(struct platform_device *pde
>  	struct device_node *parent;
>  	struct irq_domain *domain;
>  
> -	if (!of_find_property(np, "interrupt-parent", NULL))
> +	if (!of_property_present(np, "interrupt-parent"))
>  		return NULL;
>  
>  	parent = of_irq_find_parent(np);
> diff --git a/drivers/pinctrl/sunxi/pinctrl-sunxi.c b/drivers/pinctrl/sunxi/pinctrl-sunxi.c
> index f35179eceb4e..1dc1882cbdd7 100644
> --- a/drivers/pinctrl/sunxi/pinctrl-sunxi.c
> +++ b/drivers/pinctrl/sunxi/pinctrl-sunxi.c
> @@ -224,16 +224,16 @@ static int sunxi_pctrl_get_group_pins(struct pinctrl_dev *pctldev,
>  
>  static bool sunxi_pctrl_has_bias_prop(struct device_node *node)
>  {
> -	return of_find_property(node, "bias-pull-up", NULL) ||
> -		of_find_property(node, "bias-pull-down", NULL) ||
> -		of_find_property(node, "bias-disable", NULL) ||
> -		of_find_property(node, "allwinner,pull", NULL);
> +	return of_property_present(node, "bias-pull-up") ||
> +		of_property_present(node, "bias-pull-down") ||
> +		of_property_present(node, "bias-disable") ||
> +		of_property_present(node, "allwinner,pull");
>  }
>  
>  static bool sunxi_pctrl_has_drive_prop(struct device_node *node)
>  {
> -	return of_find_property(node, "drive-strength", NULL) ||
> -		of_find_property(node, "allwinner,drive", NULL);
> +	return of_property_present(node, "drive-strength") ||
> +		of_property_present(node, "allwinner,drive");
>  }
>  
>  static int sunxi_pctrl_parse_bias_prop(struct device_node *node)
> @@ -241,13 +241,13 @@ static int sunxi_pctrl_parse_bias_prop(struct device_node *node)
>  	u32 val;
>  
>  	/* Try the new style binding */
> -	if (of_find_property(node, "bias-pull-up", NULL))
> +	if (of_property_present(node, "bias-pull-up"))
>  		return PIN_CONFIG_BIAS_PULL_UP;
>  
> -	if (of_find_property(node, "bias-pull-down", NULL))
> +	if (of_property_present(node, "bias-pull-down"))
>  		return PIN_CONFIG_BIAS_PULL_DOWN;
>  
> -	if (of_find_property(node, "bias-disable", NULL))
> +	if (of_property_present(node, "bias-disable"))
>  		return PIN_CONFIG_BIAS_DISABLE;
>  
>  	/* And fall back to the old binding */
> @@ -1424,7 +1424,7 @@ static int sunxi_pinctrl_setup_debounce(struct sunxi_pinctrl *pctl,
>  		return 0;
>  
>  	/* If we don't have any setup, bail out */
> -	if (!of_find_property(node, "input-debounce", NULL))
> +	if (!of_property_present(node, "input-debounce"))
>  		return 0;
>  
>  	losc = devm_clk_get(pctl->dev, "losc");