leds: after setting inverted attribute, we must update the LED

If we change the inverted attribute to another value, the LED will not be
inverted until we change the GPIO state.

Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com>
Cc: Samuel R. C. Vale <srcvale@holoscopio.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/drivers/leds/ledtrig-gpio.c b/drivers/leds/ledtrig-gpio.c
index 8183b81..1bc5db4 100644 (file)
--- a/drivers/leds/ledtrig-gpio.c
+++ b/drivers/leds/ledtrig-gpio.c
@@ -117,6 +117,9 @@ static ssize_t gpio_trig_inverted_store(struct device *dev,
 
        gpio_data->inverted = !!inverted;
 
+       /* After inverting, we need to update the LED. */
+       schedule_work(&gpio_data->work);
+
        return n;
 }
 static DEVICE_ATTR(inverted, 0644, gpio_trig_inverted_show,