[PATCH 11/13] leds: backlight trigger: Move blank-state handling into helper

[Thomas Zimmermann <tzimmermann@suse.de>]

Move the handling of blank-state updates into a separate helper,
so that is can be called without the fbdev event. No functional
changes.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
---
 drivers/leds/trigger/ledtrig-backlight.c | 33 ++++++++++++++----------
 1 file changed, 19 insertions(+), 14 deletions(-)

diff --git a/drivers/leds/trigger/ledtrig-backlight.c b/drivers/leds/trigger/ledtrig-backlight.c
index c1c1aa60cf07..f9317f93483b 100644
--- a/drivers/leds/trigger/ledtrig-backlight.c
+++ b/drivers/leds/trigger/ledtrig-backlight.c
@@ -30,34 +30,39 @@ struct bl_trig_notifier {
 static struct list_head ledtrig_backlight_list;
 static struct mutex ledtrig_backlight_list_mutex;
 
+static void ledtrig_backlight_blank(struct bl_trig_notifier *n, bool on)
+{
+	struct led_classdev *led = n->led;
+	int new_status = !on ? BLANK : UNBLANK;
+
+	if (new_status == n->old_status)
+		return;
+
+	if ((n->old_status == UNBLANK) ^ n->invert) {
+		n->brightness = led->brightness;
+		led_set_brightness_nosleep(led, LED_OFF);
+	} else {
+		led_set_brightness_nosleep(led, n->brightness);
+	}
+
+	n->old_status = new_status;
+}
+
 static int fb_notifier_callback(struct notifier_block *p,
 				unsigned long event, void *data)
 {
 	struct bl_trig_notifier *n = container_of(p,
 					struct bl_trig_notifier, notifier);
-	struct led_classdev *led = n->led;
 	struct fb_event *fb_event = data;
 	int *blank;
-	int new_status;
 
 	/* If we aren't interested in this event, skip it immediately ... */
 	if (event != FB_EVENT_BLANK)
 		return 0;
 
 	blank = fb_event->data;
-	new_status = *blank ? BLANK : UNBLANK;
 
-	if (new_status == n->old_status)
-		return 0;
-
-	if ((n->old_status == UNBLANK) ^ n->invert) {
-		n->brightness = led->brightness;
-		led_set_brightness_nosleep(led, LED_OFF);
-	} else {
-		led_set_brightness_nosleep(led, n->brightness);
-	}
-
-	n->old_status = new_status;
+	ledtrig_backlight_blank(n, !blank[0]);
 
 	return 0;
 }
-- 
2.48.1