From 5ad79c20b6d28467db643ac107bbdaa01aa93a23 Mon Sep 17 00:00:00 2001 From: Jan Kiszka Date: Sat, 13 Jun 2020 09:15:06 +0200 Subject: leds: trigger: gpio: Avoid warning on update of inverted If the GPIO has not been configured yet, writing to inverted will raise a kernel warning. Signed-off-by: Jan Kiszka Signed-off-by: Pavel Machek --- drivers/leds/trigger/ledtrig-gpio.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers/leds/trigger/ledtrig-gpio.c') diff --git a/drivers/leds/trigger/ledtrig-gpio.c b/drivers/leds/trigger/ledtrig-gpio.c index dc64679b1a92..0120faa3dafa 100644 --- a/drivers/leds/trigger/ledtrig-gpio.c +++ b/drivers/leds/trigger/ledtrig-gpio.c @@ -99,7 +99,8 @@ static ssize_t gpio_trig_inverted_store(struct device *dev, gpio_data->inverted = inverted; /* After inverting, we need to update the LED. */ - gpio_trig_irq(0, led); + if (gpio_is_valid(gpio_data->gpio)) + gpio_trig_irq(0, led); return n; } -- cgit v1.2.3