[PATCH] pinctrl: Use of_property_present() for testing DT property presence

[Rob Herring]

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 at kernel.org>
---
 drivers/pinctrl/mediatek/pinctrl-moore.c |  2 +-
 drivers/pinctrl/pinctrl-single.c         |  4 ++--
 drivers/pinctrl/pinctrl-stmfx.c          |  2 +-
 drivers/pinctrl/renesas/pinctrl.c        |  4 ++--
 drivers/pinctrl/stm32/pinctrl-stm32.c    |  2 +-
 drivers/pinctrl/sunxi/pinctrl-sunxi.c    | 20 ++++++++++----------
 6 files changed, 17 insertions(+), 17 deletions(-)

diff --git a/drivers/pinctrl/mediatek/pinctrl-moore.c b/drivers/pinctrl/mediatek/pinctrl-moore.c
index 007b98ce5631..8649a2f9d324 100644
--- a/drivers/pinctrl/mediatek/pinctrl-moore.c
+++ b/drivers/pinctrl/mediatek/pinctrl-moore.c
@@ -586,7 +586,7 @@ static int mtk_build_gpiochip(struct mtk_pinctrl *hw)
 	 * Documentation/devicetree/bindings/gpio/gpio.txt on how to
 	 * bind pinctrl and gpio drivers via the "gpio-ranges" property.
 	 */
-	if (!of_find_property(hw->dev->of_node, "gpio-ranges", NULL)) {
+	if (!of_property_present(hw->dev->of_node, "gpio-ranges")) {
 		ret = gpiochip_add_pin_range(chip, dev_name(hw->dev), 0, 0,
 					     chip->ngpio);
 		if (ret < 0) {
diff --git a/drivers/pinctrl/pinctrl-single.c b/drivers/pinctrl/pinctrl-single.c
index 190923757cda..0dabbcf68b9f 100644
--- a/drivers/pinctrl/pinctrl-single.c
+++ b/drivers/pinctrl/pinctrl-single.c
@@ -939,11 +939,11 @@ static int pcs_parse_pinconf(struct pcs_device *pcs, struct device_node *np,
 
 	/* cacluate how much properties are supported in current node */
 	for (i = 0; i < ARRAY_SIZE(prop2); i++) {
-		if (of_find_property(np, prop2[i].name, NULL))
+		if (of_property_present(np, prop2[i].name))
 			nconfs++;
 	}
 	for (i = 0; i < ARRAY_SIZE(prop4); i++) {
-		if (of_find_property(np, prop4[i].name, NULL))
+		if (of_property_present(np, prop4[i].name))
 			nconfs++;
 	}
 	if (!nconfs)
diff --git a/drivers/pinctrl/pinctrl-stmfx.c b/drivers/pinctrl/pinctrl-stmfx.c
index 1181c4b506b1..3c031692e44d 100644
--- a/drivers/pinctrl/pinctrl-stmfx.c
+++ b/drivers/pinctrl/pinctrl-stmfx.c
@@ -632,7 +632,7 @@ static int stmfx_pinctrl_probe(struct platform_device *pdev)
 	pctl->dev = &pdev->dev;
 	pctl->stmfx = stmfx;
 
-	if (!of_find_property(np, "gpio-ranges", NULL)) {
+	if (!of_property_present(np, "gpio-ranges")) {
 		dev_err(pctl->dev, "missing required gpio-ranges property\n");
 		return -EINVAL;
 	}
diff --git a/drivers/pinctrl/renesas/pinctrl.c b/drivers/pinctrl/renesas/pinctrl.c
index b74147800319..5c71e168b370 100644
--- a/drivers/pinctrl/renesas/pinctrl.c
+++ b/drivers/pinctrl/renesas/pinctrl.c
@@ -125,8 +125,8 @@ static int sh_pfc_dt_subnode_to_map(struct pinctrl_dev *pctldev,
 	 * inside a subnode nor across subnodes.
 	 */
 	if (!pmx->func_prop_name) {
-		if (of_find_property(np, "groups", NULL) ||
-		    of_find_property(np, "pins", NULL)) {
+		if (of_property_present(np, "groups")||
+		    of_property_present(np, "pins")) {
 			pmx->func_prop_name = "function";
 			pmx->groups_prop_name = "groups";
 			pmx->pins_prop_name = "pins";
diff --git a/drivers/pinctrl/stm32/pinctrl-stm32.c b/drivers/pinctrl/stm32/pinctrl-stm32.c
index cb33a23ab0c1..66a25becd8f5 100644
--- a/drivers/pinctrl/stm32/pinctrl-stm32.c
+++ b/drivers/pinctrl/stm32/pinctrl-stm32.c
@@ -1374,7 +1374,7 @@ static struct irq_domain *stm32_pctrl_get_irq_domain(struct platform_device *pde
 	struct device_node *parent;
 	struct irq_domain *domain;
 
-	if (!of_find_property(np, "interrupt-parent", NULL))
+	if (!of_property_present(np, "interrupt-parent"))
 		return NULL;
 
 	parent = of_irq_find_parent(np);
diff --git a/drivers/pinctrl/sunxi/pinctrl-sunxi.c b/drivers/pinctrl/sunxi/pinctrl-sunxi.c
index f35179eceb4e..1dc1882cbdd7 100644
--- a/drivers/pinctrl/sunxi/pinctrl-sunxi.c
+++ b/drivers/pinctrl/sunxi/pinctrl-sunxi.c
@@ -224,16 +224,16 @@ static int sunxi_pctrl_get_group_pins(struct pinctrl_dev *pctldev,
 
 static bool sunxi_pctrl_has_bias_prop(struct device_node *node)
 {
-	return of_find_property(node, "bias-pull-up", NULL) ||
-		of_find_property(node, "bias-pull-down", NULL) ||
-		of_find_property(node, "bias-disable", NULL) ||
-		of_find_property(node, "allwinner,pull", NULL);
+	return of_property_present(node, "bias-pull-up") ||
+		of_property_present(node, "bias-pull-down") ||
+		of_property_present(node, "bias-disable") ||
+		of_property_present(node, "allwinner,pull");
 }
 
 static bool sunxi_pctrl_has_drive_prop(struct device_node *node)
 {
-	return of_find_property(node, "drive-strength", NULL) ||
-		of_find_property(node, "allwinner,drive", NULL);
+	return of_property_present(node, "drive-strength") ||
+		of_property_present(node, "allwinner,drive");
 }
 
 static int sunxi_pctrl_parse_bias_prop(struct device_node *node)
@@ -241,13 +241,13 @@ static int sunxi_pctrl_parse_bias_prop(struct device_node *node)
 	u32 val;
 
 	/* Try the new style binding */
-	if (of_find_property(node, "bias-pull-up", NULL))
+	if (of_property_present(node, "bias-pull-up"))
 		return PIN_CONFIG_BIAS_PULL_UP;
 
-	if (of_find_property(node, "bias-pull-down", NULL))
+	if (of_property_present(node, "bias-pull-down"))
 		return PIN_CONFIG_BIAS_PULL_DOWN;
 
-	if (of_find_property(node, "bias-disable", NULL))
+	if (of_property_present(node, "bias-disable"))
 		return PIN_CONFIG_BIAS_DISABLE;
 
 	/* And fall back to the old binding */
@@ -1424,7 +1424,7 @@ static int sunxi_pinctrl_setup_debounce(struct sunxi_pinctrl *pctl,
 		return 0;
 
 	/* If we don't have any setup, bail out */
-	if (!of_find_property(node, "input-debounce", NULL))
+	if (!of_property_present(node, "input-debounce"))
 		return 0;
 
 	losc = devm_clk_get(pctl->dev, "losc");
-- 
2.39.2