power: bq24190_charger: Change first_time flag reset condition

commit cd054ee1 upstream.

The initial register reset of BQ24190 generates a charger status change
whose propagation via power_supply_changed is prevented using a flag.
This flag gets never reset so all following events are ignored as well
leading for example to userspace not detecting charger connects/disconnects.

Therefor change the reset condition of first_time flag, so only the
propagation of the first charger status change is prevented.
Signed-off-by: Thomas Elste <thomas.elste@imms.de>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
[bwh: Backported to 3.16: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

drivers/power/bq24190_charger.c

@@ -1268,10 +1268,13 @@ static irqreturn_t bq24190_irq_handler_thread(int irq, void *data)
 	 * register reset so we should ignore that one (the very first
 	 * interrupt received).
 	 */
-	if (alert_userspace && !bdi->first_time) {
-		power_supply_changed(&bdi->charger);
-		power_supply_changed(&bdi->battery);
-		bdi->first_time = false;
+	if (alert_userspace) {
+		if (!bdi->first_time) {
+			power_supply_changed(&bdi->charger);
+			power_supply_changed(&bdi->battery);
+		} else {
+			bdi->first_time = false;
+		}
 	}
 
 out: