linux-kernel - [PATCH v1 4/4] regulator: axp20x: Set DCDC frequency only when property exists

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Message-ID: <TY3P286MB26111D00F42888C71EF0877698969@TY3P286MB2611.JPNP286.PROD.OUTLOOK.COM>
Date:   Fri,  7 Apr 2023 22:18:13 +0800
From:   Shengyu Qu <wiagn233@...look.com>
To:     lee@...nel.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, wens@...e.org,
        lgirdwood@...il.com, broonie@...nel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Shengyu Qu <wiagn233@...look.com>
Subject: [PATCH v1 4/4] regulator: axp20x: Set DCDC frequency only when property exists

Current axp20x regulator driver would always set DCDC frequency even if
there is no x-powers,dcdc-freq in device tree data. Causing meaningless
warning info output on variants that do not support DCDC frequency
modification. So only try to set DCDC frequency when there is frequency
property.

Signed-off-by: Shengyu Qu <wiagn233@...look.com>
---
 drivers/regulator/axp20x-regulator.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/regulator/axp20x-regulator.c b/drivers/regulator/axp20x-regulator.c
index ece4af93df7b..12a12923bc7b 100644
--- a/drivers/regulator/axp20x-regulator.c
+++ b/drivers/regulator/axp20x-regulator.c
@@ -1247,10 +1247,10 @@ static int axp20x_regulator_parse_dt(struct platform_device *pdev)
 	if (!regulators) {
 		dev_warn(&pdev->dev, "regulators node not found\n");
 	} else {
-		of_property_read_u32(regulators, "x-powers,dcdc-freq", &dcdcfreq);
-		ret = axp20x_set_dcdc_freq(pdev, dcdcfreq);
-		if (ret < 0) {
-			dev_err(&pdev->dev, "Error setting dcdc frequency: %d\n", ret);
+		if (of_property_read_u32(regulators, "x-powers,dcdc-freq", &dcdcfreq) != -EINVAL) {
+			ret = axp20x_set_dcdc_freq(pdev, dcdcfreq);
+			if (ret < 0)
+				dev_err(&pdev->dev, "Error setting dcdc frequency: %d\n", ret);
 		}
 		of_node_put(regulators);
 	}
-- 
2.25.1