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| author | Jan Kiszka <jan.kiszka@siemens.com> | 2020-06-13 09:15:06 +0200 |
|---|---|---|
| committer | Pavel Machek <pavel@ucw.cz> | 2020-07-12 10:06:38 +0200 |
| commit | 5ad79c20b6d28467db643ac107bbdaa01aa93a23 (patch) | |
| tree | 0414f048784a7fedb9f77876894e14ffa218777c | |
| parent | 14d3e74f59a4d7f9bc2768376818d7bebb9ad27f (diff) | |
| download | linux-5ad79c20b6d28467db643ac107bbdaa01aa93a23.tar.gz | |
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 <jan.kiszka@siemens.com> Signed-off-by: Pavel Machek <pavel@ucw.cz>
| -rw-r--r-- | drivers/leds/trigger/ledtrig-gpio.c | 3 |
1 files changed, 2 insertions, 1 deletions
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; } |