linux-kernel - Re: [PATCH] phy: Use of_property_present() for testing DT property presence

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Message-ID: <20230313102648.324f6e75@slackpad.lan>
Date:   Mon, 13 Mar 2023 10:26:48 +0000
From:   Andre Przywara <andre.przywara@....com>
To:     Rob Herring <robh@...nel.org>
Cc:     Vinod Koul <vkoul@...nel.org>,
        Kishon Vijay Abraham I <kishon@...nel.org>,
        Chen-Yu Tsai <wens@...e.org>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        Samuel Holland <samuel@...lland.org>,
        devicetree@...r.kernel.org, linux-phy@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-sunxi@...ts.linux.dev,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] phy: Use of_property_present() for testing DT property
 presence

On Fri, 10 Mar 2023 08:47:20 -0600
Rob Herring <robh@...nel.org> 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@...nel.org>

(for both:) Reviewed-by: Andre Przywara <andre.przywara@....com>

Cheers,
Andre

> ---
>  drivers/phy/allwinner/phy-sun4i-usb.c  | 2 +-
>  drivers/phy/broadcom/phy-bcm-ns-usb2.c | 2 +-
>  2 files changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/phy/allwinner/phy-sun4i-usb.c b/drivers/phy/allwinner/phy-sun4i-usb.c
> index fbcd7014ab43..fc9f6fb447a0 100644
> --- a/drivers/phy/allwinner/phy-sun4i-usb.c
> +++ b/drivers/phy/allwinner/phy-sun4i-usb.c
> @@ -758,7 +758,7 @@ static int sun4i_usb_phy_probe(struct platform_device *pdev)
>  		return PTR_ERR(data->vbus_det_gpio);
>  	}
>  
> -	if (of_find_property(np, "usb0_vbus_power-supply", NULL)) {
> +	if (of_property_present(np, "usb0_vbus_power-supply")) {
>  		data->vbus_power_supply = devm_power_supply_get_by_phandle(dev,
>  						     "usb0_vbus_power-supply");
>  		if (IS_ERR(data->vbus_power_supply)) {
> diff --git a/drivers/phy/broadcom/phy-bcm-ns-usb2.c b/drivers/phy/broadcom/phy-bcm-ns-usb2.c
> index 6a36e187d100..269564bdf687 100644
> --- a/drivers/phy/broadcom/phy-bcm-ns-usb2.c
> +++ b/drivers/phy/broadcom/phy-bcm-ns-usb2.c
> @@ -107,7 +107,7 @@ static int bcm_ns_usb2_probe(struct platform_device *pdev)
>  		return -ENOMEM;
>  	usb2->dev = dev;
>  
> -	if (of_find_property(dev->of_node, "brcm,syscon-clkset", NULL)) {
> +	if (of_property_present(dev->of_node, "brcm,syscon-clkset")) {
>  		usb2->base = devm_platform_ioremap_resource(pdev, 0);
>  		if (IS_ERR(usb2->base)) {
>  			dev_err(dev, "Failed to map control reg\n");