[PATCH v5 1/3] leds: pwm: check result of led_pwm_set() in led_pwm_add()

* [PATCH v5 1/3] leds: pwm: check result of led_pwm_set() in led_pwm_add()
  2020-04-21 13:09 [PATCH v5 0/3] leds: pwm: add support for default-state device Denis Osterland-Heim
@ 2020-04-21 13:09 ` Denis Osterland-Heim
  2020-04-27  9:36   ` Pavel Machek
  2020-04-21 13:09 ` [PATCH v5 2/3] leds: pwm: add support for default-state device property Denis Osterland-Heim
  2020-04-21 13:09 ` [PATCH v5 3/3] leds: pwm: add reference to common leds for default-state Denis Osterland-Heim
  2 siblings, 1 reply; 5+ messages in thread
From: Denis Osterland-Heim @ 2020-04-21 13:09 UTC (permalink / raw)
  To: dmurphy, pavel, jacek.anaszewski
  Cc: linux-kernel, Denis Osterland-Heim, linux-leds, robh+dt, devicetree

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

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 6c8a724aac51..ef7b91bd2064 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)
-- 
2.26.2



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