[PATCH 1/2] leds: trigger: gpio: Refresh LED state after GPIO change

From: Jan Kiszka
Date: Fri May 26 2017 - 09:18:20 EST


The new GPIO may have a different state than the old one.

Signed-off-by: Jan Kiszka <jan.kiszka@xxxxxxxxxxx>
---
drivers/leds/trigger/ledtrig-gpio.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/drivers/leds/trigger/ledtrig-gpio.c b/drivers/leds/trigger/ledtrig-gpio.c
index 51288a45fbcb..93d6b82e6437 100644
--- a/drivers/leds/trigger/ledtrig-gpio.c
+++ b/drivers/leds/trigger/ledtrig-gpio.c
@@ -170,6 +170,8 @@ static ssize_t gpio_trig_gpio_store(struct device *dev,
if (gpio_data->gpio != 0)
free_irq(gpio_to_irq(gpio_data->gpio), led);
gpio_data->gpio = gpio;
+ /* After changing the GPIO, we need to update the LED. */
+ schedule_work(&gpio_data->work);
}

return ret ? ret : n;
--
2.12.0