diff options
| author | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2019-08-30 17:08:19 +0200 |
|---|---|---|
| committer | Jacek Anaszewski <jacek.anaszewski@gmail.com> | 2019-09-01 13:33:30 +0200 |
| commit | 4e4210402639f16dfbfa5ba277aeb88fff401cec (patch) | |
| tree | 52bb8bf13cc84cfcdeb5e10e8ac073dfc6598c60 /drivers/leds | |
| parent | leds: pwm: Use struct_size() helper (diff) | |
| download | linux-4e4210402639f16dfbfa5ba277aeb88fff401cec.tar.xz linux-4e4210402639f16dfbfa5ba277aeb88fff401cec.zip | |
leds: trigger: gpio: GPIO 0 is valid
Allow all valid GPIOs to be used in the driver.
Fixes: 17354bfe8527 ("leds: Add gpio-led trigger")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
Diffstat (limited to 'drivers/leds')
| -rw-r--r-- | drivers/leds/trigger/ledtrig-gpio.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/drivers/leds/trigger/ledtrig-gpio.c b/drivers/leds/trigger/ledtrig-gpio.c index 33cc99a1a16a..dc64679b1a92 100644 --- a/drivers/leds/trigger/ledtrig-gpio.c +++ b/drivers/leds/trigger/ledtrig-gpio.c @@ -131,10 +131,10 @@ static ssize_t gpio_trig_gpio_store(struct device *dev, if (gpio_data->gpio == gpio) return n; - if (!gpio) { - if (gpio_data->gpio != 0) + if (!gpio_is_valid(gpio)) { + if (gpio_is_valid(gpio_data->gpio)) free_irq(gpio_to_irq(gpio_data->gpio), led); - gpio_data->gpio = 0; + gpio_data->gpio = gpio; return n; } @@ -144,7 +144,7 @@ static ssize_t gpio_trig_gpio_store(struct device *dev, if (ret) { dev_err(dev, "request_irq failed with error %d\n", ret); } else { - if (gpio_data->gpio != 0) + if (gpio_is_valid(gpio_data->gpio)) free_irq(gpio_to_irq(gpio_data->gpio), led); gpio_data->gpio = gpio; /* After changing the GPIO, we need to update the LED. */ @@ -172,6 +172,8 @@ static int gpio_trig_activate(struct led_classdev *led) return -ENOMEM; gpio_data->led = led; + gpio_data->gpio = -ENOENT; + led_set_trigger_data(led, gpio_data); return 0; @@ -181,7 +183,7 @@ static void gpio_trig_deactivate(struct led_classdev *led) { struct gpio_trig_data *gpio_data = led_get_trigger_data(led); - if (gpio_data->gpio != 0) + if (gpio_is_valid(gpio_data->gpio)) free_irq(gpio_to_irq(gpio_data->gpio), led); kfree(gpio_data); } |