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

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Date:   Tue, 14 Mar 2023 21:03:07 +0100
From:   Jernej Škrabec <jernej.skrabec@...il.com>
To:     Vinod Koul <vkoul@...nel.org>,
        Kishon Vijay Abraham I <kishon@...nel.org>,
        Chen-Yu Tsai <wens@...e.org>,
        Samuel Holland <samuel@...lland.org>,
        Rob Herring <robh@...nel.org>
Cc:     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

Dne petek, 10. marec 2023 ob 15:47:20 CET je Rob Herring napisal(a):
> 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>
> ---
>  drivers/phy/allwinner/phy-sun4i-usb.c  | 2 +-

for sun4i:
Reviewed-by: Jernej Skrabec <jernej.skrabec@...il.com>

Best regards,
Jernej

>  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");