Extcon: Notify changed state for only one cable to notifee

This patch inform the state of only one cable instead of previous data including the state of 32 cables to notifee which use extcon_register_interest() function to monitor whether the specific cable is attachd or detached. Signed-off-by: Chanwoo Choi <[email protected]> Signed-off-by: Myungjoo Ham <[email protected]> Signed-off-by: Kyungmin Park <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
ambv · Apr 30, 2012 · f4cce69 · f4cce69
1 parent a1d26ac
commit f4cce69
Showing 1 changed file with 8 additions and 1 deletion.
diff --git a/drivers/extcon/extcon_class.c b/drivers/extcon/extcon_class.c
@@ -425,8 +425,15 @@ static int _call_per_cable(struct notifier_block *nb, unsigned long val,
 
 	if ((val & (1 << obj->cable_index)) !=
 	    (edev->state & (1 << obj->cable_index))) {
+		bool cable_state = true;
+
 		obj->previous_value = val;
-		return obj->user_nb->notifier_call(obj->user_nb, val, ptr);
+
+		if (val & (1 << obj->cable_index))
+			cable_state = false;
+
+		return obj->user_nb->notifier_call(obj->user_nb,
+				cable_state, ptr);
 	}
 
 	return NOTIFY_OK;