leds: disable triggers on brightness set

Disable any active triggers when the brightness attribute is
set to zero.

Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Márton Németh <nm127@freemail.hu>
Signed-off-by: Richard Purdie <rpurdie@rpsys.net>

1 files changed, 7 insertions, 0 deletions

diff --git a/drivers/leds/leds.h b/drivers/leds/leds.h
index 12b6fe93b135..0214799639f7 100644
--- a/drivers/leds/leds.h
+++ b/drivers/leds/leds.h
@@ -27,6 +27,11 @@ static inline void led_set_brightness(struct led_classdev *led_cdev,
                 led_cdev->brightness_set(led_cdev, value);
 }
 
+static inline int led_get_brightness(struct led_classdev *led_cdev)
+{
+        return led_cdev->brightness;
+}
+
 extern struct rw_semaphore leds_list_lock;
 extern struct list_head leds_list;
 
@@ -34,9 +39,11 @@ extern struct list_head leds_list;
 void led_trigger_set_default(struct led_classdev *led_cdev);
 void led_trigger_set(struct led_classdev *led_cdev,
                         struct led_trigger *trigger);
+void led_trigger_remove(struct led_classdev *led_cdev);
 #else
 #define led_trigger_set_default(x) do {} while(0)
 #define led_trigger_set(x, y) do {} while(0)
+#define led_trigger_remove(x) do {} while(0)
 #endif
 
 ssize_t led_trigger_store(struct device *dev, struct device_attribute *attr,