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

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Date:   Fri, 10 Mar 2023 08:47:01 -0600
From:   Rob Herring <robh@...nel.org>
To:     Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Orson Zhai <orsonzhai@...il.com>,
        Baolin Wang <baolin.wang@...ux.alibaba.com>,
        Chunyan Zhang <zhang.lyra@...il.com>
Cc:     devicetree@...r.kernel.org, linux-clk@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] clk: 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/clk/clk.c         | 4 ++--
 drivers/clk/sprd/common.c | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c
index ae07685c7588..f7528d7f8256 100644
--- a/drivers/clk/clk.c
+++ b/drivers/clk/clk.c
@@ -4880,8 +4880,8 @@ static struct device_node *get_clk_provider_node(struct device *dev)
 	np = dev->of_node;
 	parent_np = dev->parent ? dev->parent->of_node : NULL;
 
-	if (!of_find_property(np, "#clock-cells", NULL))
-		if (of_find_property(parent_np, "#clock-cells", NULL))
+	if (!of_property_present(np, "#clock-cells"))
+		if (of_property_present(parent_np, "#clock-cells"))
 			np = parent_np;
 
 	return np;
diff --git a/drivers/clk/sprd/common.c b/drivers/clk/sprd/common.c
index ce81e4087a8f..1a3795a61f81 100644
--- a/drivers/clk/sprd/common.c
+++ b/drivers/clk/sprd/common.c
@@ -44,7 +44,7 @@ int sprd_clk_regmap_init(struct platform_device *pdev,
 	struct device_node *node = dev->of_node, *np;
 	struct regmap *regmap;
 
-	if (of_find_property(node, "sprd,syscon", NULL)) {
+	if (of_property_present(node, "sprd,syscon")) {
 		regmap = syscon_regmap_lookup_by_phandle(node, "sprd,syscon");
 		if (IS_ERR(regmap)) {
 			pr_err("%s: failed to get syscon regmap\n", __func__);
-- 
2.39.2