linux-kernel - [PATCH] regulator: pwm: Do not print error on probe deferral

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Date:   Thu,  6 Aug 2020 17:55:15 +0200
From:   Thierry Reding <thierry.reding@...il.com>
To:     Mark Brown <broonie@...nel.org>,
        Liam Girdwood <lgirdwood@...il.com>
Cc:     linux-kernel@...r.kernel.org
Subject: [PATCH] regulator: pwm: Do not print error on probe deferral

From: Thierry Reding <treding@...dia.com>

When the pwm-regulator driver fails to find the enable GPIO because of
probe deferral, prevent it from potentially spamming the kernel log with
error messages that are not useful.

Signed-off-by: Thierry Reding <treding@...dia.com>
---
 drivers/regulator/pwm-regulator.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/regulator/pwm-regulator.c b/drivers/regulator/pwm-regulator.c
index 3234b118b53e..dc99ac9b0cdf 100644
--- a/drivers/regulator/pwm-regulator.c
+++ b/drivers/regulator/pwm-regulator.c
@@ -370,7 +370,9 @@ static int pwm_regulator_probe(struct platform_device *pdev)
 						    gpio_flags);
 	if (IS_ERR(drvdata->enb_gpio)) {
 		ret = PTR_ERR(drvdata->enb_gpio);
-		dev_err(&pdev->dev, "Failed to get enable GPIO: %d\n", ret);
+		if (ret != -EPROBE_DEFER)
+			dev_err(&pdev->dev, "Failed to get enable GPIO: %d\n", ret);
+
 		return ret;
 	}
 
-- 
2.27.0