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From: Denis Osterland-Heim <denis.osterland@diehl.com>
To: "linux-leds@vger.kernel.org" <linux-leds@vger.kernel.org>
Cc: "uwe@kleine-koenig.org" <uwe@kleine-koenig.org>,
	Denis Osterland-Heim <denis.osterland@diehl.com>
Subject: [PATCH v4] leds: pwm: check result of led_pwm_set() in led_pwm_add()
Date: Mon, 23 Mar 2020 15:27:50 +0000
Message-ID: <20200323152716.25449-1-Denis.Osterland@diehl.com> (raw)

led_pwm_set() now returns an error when setting the PWM fails.

Cc: Uwe Kleine-König <uwe@kleine-koenig.org>
Signed-off-by: Denis Osterland-Heim <Denis.Osterland@diehl.com>
---
 drivers/leds/leds-pwm.c | 16 +++++++++++-----
 1 file changed, 11 insertions(+), 5 deletions(-)

diff --git a/drivers/leds/leds-pwm.c b/drivers/leds/leds-pwm.c
index 6caf8bea8cd5..07eab2d8b7c7 100644
--- a/drivers/leds/leds-pwm.c
+++ b/drivers/leds/leds-pwm.c
@@ -91,15 +91,21 @@ static int led_pwm_add(struct device *dev, struct led_pwm_priv *priv,
 	pwm_init_state(led_data->pwm, &led_data->pwmstate);
 
 	ret = devm_led_classdev_register(dev, &led_data->cdev);
-	if (ret == 0) {
-		priv->num_leds++;
-		led_pwm_set(&led_data->cdev, led_data->cdev.brightness);
-	} else {
+	if (ret) {
 		dev_err(dev, "failed to register PWM led for %s: %d\n",
 			led->name, ret);
+		return ret;
 	}
 
-	return ret;
+	ret = led_pwm_set(&led_data->cdev, led_data->cdev.brightness);
+	if (ret) {
+		dev_err(dev, "failed to set led PWM value for %s: %d",
+			led->name, ret);
+		return ret;
+	}
+
+	priv->num_leds++;
+	return 0;
 }
 
 static int led_pwm_create_fwnode(struct device *dev, struct led_pwm_priv *priv)
-- 
2.25.2



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             reply index

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-23 15:27 Denis Osterland-Heim [this message]
  -- strict thread matches above, loose matches on Subject: below --
2020-03-23  9:14 Denis Osterland-Heim
2020-03-23 21:41 ` Jacek Anaszewski
2020-03-24  7:36   ` Denis Osterland-Heim

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