From f16703360da7731a057df2ffa902306819c22398 Mon Sep 17 00:00:00 2001 From: Markus Hofstaetter Date: Wed, 11 Nov 2015 12:40:29 +0100 Subject: [PATCH] leds: call led_pwm_set() in leds-pwm to enforce default LED_OFF Some PWMs are disabled by default or the default pin setting does not match the LED_OFF state (e.g., active-low leds). Hence, the driver may end up reporting 0 brightness, but the leds are actually on using full brightness, because it never enforces its default configuration. So enforce it by calling led_pwm_set() after successfully registering the device. Tested on a Phytec phyFLEX i.MX6Q board based on kernel v3.19.5. Signed-off-by: Markus Hofstaetter Tested-by: Markus Hofstaetter Signed-off-by: Jacek Anaszewski --- drivers/leds/leds-pwm.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/leds/leds-pwm.c b/drivers/leds/leds-pwm.c index bc501930b54b..410ff0468245 100644 --- a/drivers/leds/leds-pwm.c +++ b/drivers/leds/leds-pwm.c @@ -124,6 +124,7 @@ static int led_pwm_add(struct device *dev, struct led_pwm_priv *priv, ret = led_classdev_register(dev, &led_data->cdev); if (ret == 0) { priv->num_leds++; + led_pwm_set(&led_data->cdev, led_data->cdev.brightness); } else { dev_err(dev, "failed to register PWM led for %s: %d\n", led->name, ret); -- 2.20.1