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path: root/drivers/leds/ledtrig-gpio.c
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Diffstat (limited to 'drivers/leds/ledtrig-gpio.c')
-rw-r--r--drivers/leds/ledtrig-gpio.c15
1 files changed, 8 insertions, 7 deletions
diff --git a/drivers/leds/ledtrig-gpio.c b/drivers/leds/ledtrig-gpio.c
index 991d93be0f4..ecc4bf3f37a 100644
--- a/drivers/leds/ledtrig-gpio.c
+++ b/drivers/leds/ledtrig-gpio.c
@@ -99,7 +99,7 @@ static ssize_t gpio_trig_inverted_show(struct device *dev,
struct led_classdev *led = dev_get_drvdata(dev);
struct gpio_trig_data *gpio_data = led->trigger_data;
- return sprintf(buf, "%s\n", gpio_data->inverted ? "yes" : "no");
+ return sprintf(buf, "%u\n", gpio_data->inverted);
}
static ssize_t gpio_trig_inverted_store(struct device *dev,
@@ -107,16 +107,17 @@ static ssize_t gpio_trig_inverted_store(struct device *dev,
{
struct led_classdev *led = dev_get_drvdata(dev);
struct gpio_trig_data *gpio_data = led->trigger_data;
- unsigned inverted;
+ unsigned long inverted;
int ret;
- ret = sscanf(buf, "%u", &inverted);
- if (ret < 1) {
- dev_err(dev, "invalid value\n");
+ ret = strict_strtoul(buf, 10, &inverted);
+ if (ret < 0)
+ return ret;
+
+ if (inverted > 1)
return -EINVAL;
- }
- gpio_data->inverted = !!inverted;
+ gpio_data->inverted = inverted;
/* After inverting, we need to update the LED. */
schedule_work(&gpio_data->work);