linux-kernel - Re: [PATCH] gpio: Use of_property_present() for non-boolean properties

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Message-ID: <7731755.EvYhyI6sBW@diego>
Date: Tue, 05 Nov 2024 17:11:03 +0100
From: Heiko Stübner <heiko@...ech.de>
To: Linus Walleij <linus.walleij@...aro.org>,
 Bartosz Golaszewski <brgl@...ev.pl>, "Rob Herring (Arm)" <robh@...nel.org>
Cc: linux-gpio@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
 linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject:
 Re: [PATCH] gpio: Use of_property_present() for non-boolean properties

Am Montag, 4. November 2024, 20:06:27 CET schrieb Rob Herring (Arm):
> The use of of_property_read_bool() for non-boolean properties is
> deprecated in favor of of_property_present() when testing for property
> presence.
> 
> Signed-off-by: Rob Herring (Arm) <robh@...nel.org>

With of_property_present essentially just mapping to of_property_read_bool,
this change looks correct and should not introduce any functional differences

Reviewed-by: Heiko Stuebner <heiko@...ech.de>

> ---
>  drivers/gpio/gpio-rockchip.c | 2 +-
>  drivers/gpio/gpiolib-of.c    | 2 +-
>  2 files changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/gpio/gpio-rockchip.c b/drivers/gpio/gpio-rockchip.c
> index 365ab947983c..64924bc01591 100644
> --- a/drivers/gpio/gpio-rockchip.c
> +++ b/drivers/gpio/gpio-rockchip.c
> @@ -602,7 +602,7 @@ static int rockchip_gpiolib_register(struct rockchip_pin_bank *bank)
>  	 * files which don't set the "gpio-ranges" property or systems that
>  	 * utilize ACPI the driver has to call gpiochip_add_pin_range().
>  	 */
> -	if (!of_property_read_bool(bank->of_node, "gpio-ranges")) {
> +	if (!of_property_present(bank->of_node, "gpio-ranges")) {
>  		struct device_node *pctlnp = of_get_parent(bank->of_node);
>  		struct pinctrl_dev *pctldev = NULL;
>  
> diff --git a/drivers/gpio/gpiolib-of.c b/drivers/gpio/gpiolib-of.c
> index 880f1efcaca5..2e537ee979f3 100644
> --- a/drivers/gpio/gpiolib-of.c
> +++ b/drivers/gpio/gpiolib-of.c
> @@ -337,7 +337,7 @@ static void of_gpio_flags_quirks(const struct device_node *np,
>  	 * to determine if the flags should have inverted semantics.
>  	 */
>  	if (IS_ENABLED(CONFIG_SPI_MASTER) && !strcmp(propname, "cs-gpios") &&
> -	    of_property_read_bool(np, "cs-gpios")) {
> +	    of_property_present(np, "cs-gpios")) {
>  		u32 cs;
>  		int ret;
>  
>