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

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Date:   Fri, 10 Mar 2023 08:47:20 -0600
From:   Rob Herring <robh@...nel.org>
To:     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>
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: [PATCH] phy: Use of_property_present() for testing DT property presence

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 +-
 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");
-- 
2.39.2