[PATCH] Extcon: Notify changed state for only one cable to notifee

[PATCH] Extcon: Notify changed state for only one cable to notifee

[Chanwoo Choi]

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 <cw00.choi@samsung.com>
Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
---
 drivers/extcon/extcon_class.c |    9 ++++++++-
 1 files changed, 8 insertions(+), 1 deletions(-)

diff --git a/drivers/extcon/extcon_class.c b/drivers/extcon/extcon_class.c
index dbd3bfb..9cf3166 100644
--- 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;
-- 
1.7.0.4