linux-kernel - [PATCH] sbs-battery: fix power status when battery is dry

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Date:	Wed, 23 Mar 2016 17:53:14 +0800
From:	YH Huang <yh.huang@...iatek.com>
To:	Sebastian Reichel <sre@...nel.org>,
	Dmitry Eremin-Solenikov <dbaryshkov@...il.com>,
	David Woodhouse <dwmw2@...radead.org>,
	Matthias Brugger <matthias.bgg@...il.com>
CC:	<linux-pm@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	<linux-mediatek@...ts.infradead.org>,
	YH Huang <yh.huang@...iatek.com>
Subject: [PATCH] sbs-battery: fix power status when battery is dry

When the battery is dry and BATTERY_FULL_DISCHARGED is set,
we should check BATTERY_DISCHARGING to decide the power status.
If BATTERY_DISCHARGING is set, the power status is not charging.
Or the power status should be charging.

Signed-off-by: YH Huang <yh.huang@...iatek.com>
---
 drivers/power/sbs-battery.c |   22 ++++++++++++----------
 1 file changed, 12 insertions(+), 10 deletions(-)

diff --git a/drivers/power/sbs-battery.c b/drivers/power/sbs-battery.c
index d6226d6..d86db0e 100644
--- a/drivers/power/sbs-battery.c
+++ b/drivers/power/sbs-battery.c
@@ -382,11 +382,12 @@ static int sbs_get_battery_property(struct i2c_client *client,
 
 		if (ret & BATTERY_FULL_CHARGED)
 			val->intval = POWER_SUPPLY_STATUS_FULL;
-		else if (ret & BATTERY_FULL_DISCHARGED)
-			val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING;
-		else if (ret & BATTERY_DISCHARGING)
-			val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
-		else
+		else if (ret & BATTERY_DISCHARGING) {
+			if (ret & BATTERY_FULL_DISCHARGED)
+				val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING;
+			else
+				val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
+		} else
 			val->intval = POWER_SUPPLY_STATUS_CHARGING;
 
 		if (chip->poll_time == 0)
@@ -702,11 +703,12 @@ static void sbs_delayed_work(struct work_struct *work)
 
 	if (ret & BATTERY_FULL_CHARGED)
 		ret = POWER_SUPPLY_STATUS_FULL;
-	else if (ret & BATTERY_FULL_DISCHARGED)
-		ret = POWER_SUPPLY_STATUS_NOT_CHARGING;
-	else if (ret & BATTERY_DISCHARGING)
-		ret = POWER_SUPPLY_STATUS_DISCHARGING;
-	else
+	else if (ret & BATTERY_DISCHARGING) {
+		if (ret & BATTERY_FULL_DISCHARGED)
+			ret = POWER_SUPPLY_STATUS_NOT_CHARGING;
+		else
+			ret = POWER_SUPPLY_STATUS_DISCHARGING;
+	} else
 		ret = POWER_SUPPLY_STATUS_CHARGING;
 
 	if (chip->last_state != ret) {
-- 
1.7.9.5