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Subject[PATCH v3 14/20] power_supply: charger-manager: Decrement the power supply's device reference counter
Date
Use power_supply_put() to decrement the power supply's device reference
counter.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Reviewed-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Reviewed-by: Sebastian Reichel <sre@kernel.org>
---
drivers/power/charger-manager.c | 70 +++++++++++++++++++++++++++--------------
1 file changed, 47 insertions(+), 23 deletions(-)

diff --git a/drivers/power/charger-manager.c b/drivers/power/charger-manager.c
index 8aa780125dfa..c2aef7a5582b 100644
--- a/drivers/power/charger-manager.c
+++ b/drivers/power/charger-manager.c
@@ -107,6 +107,7 @@ static bool is_batt_present(struct charger_manager *cm)
&val);
if (ret == 0 && val.intval)
present = true;
+ power_supply_put(psy);
break;
case CM_CHARGER_STAT:
for (i = 0; cm->desc->psy_charger_stat[i]; i++) {
@@ -120,6 +121,7 @@ static bool is_batt_present(struct charger_manager *cm)

ret = power_supply_get_property(psy,
POWER_SUPPLY_PROP_PRESENT, &val);
+ power_supply_put(psy);
if (ret == 0 && val.intval) {
present = true;
break;
@@ -157,6 +159,7 @@ static bool is_ext_pwr_online(struct charger_manager *cm)

ret = power_supply_get_property(psy, POWER_SUPPLY_PROP_ONLINE,
&val);
+ power_supply_put(psy);
if (ret == 0 && val.intval) {
online = true;
break;
@@ -186,6 +189,7 @@ static int get_batt_uV(struct charger_manager *cm, int *uV)

ret = power_supply_get_property(fuel_gauge,
POWER_SUPPLY_PROP_VOLTAGE_NOW, &val);
+ power_supply_put(fuel_gauge);
if (ret)
return ret;

@@ -229,10 +233,13 @@ static bool is_charging(struct charger_manager *cm)
if (ret) {
dev_warn(cm->dev, "Cannot read ONLINE value from %s\n",
cm->desc->psy_charger_stat[i]);
+ power_supply_put(psy);
continue;
}
- if (val.intval == 0)
+ if (val.intval == 0) {
+ power_supply_put(psy);
continue;
+ }

/*
* 3. The charger should not be FULL, DISCHARGING,
@@ -240,6 +247,7 @@ static bool is_charging(struct charger_manager *cm)
*/
ret = power_supply_get_property(psy, POWER_SUPPLY_PROP_STATUS,
&val);
+ power_supply_put(psy);
if (ret) {
dev_warn(cm->dev, "Cannot read STATUS value from %s\n",
cm->desc->psy_charger_stat[i]);
@@ -267,6 +275,7 @@ static bool is_full_charged(struct charger_manager *cm)
struct charger_desc *desc = cm->desc;
union power_supply_propval val;
struct power_supply *fuel_gauge;
+ bool is_full = false;
int ret = 0;
int uV;

@@ -284,15 +293,19 @@ static bool is_full_charged(struct charger_manager *cm)
/* Not full if capacity of fuel gauge isn't full */
ret = power_supply_get_property(fuel_gauge,
POWER_SUPPLY_PROP_CHARGE_FULL, &val);
- if (!ret && val.intval > desc->fullbatt_full_capacity)
- return true;
+ if (!ret && val.intval > desc->fullbatt_full_capacity) {
+ is_full = true;
+ goto out;
+ }
}

/* Full, if it's over the fullbatt voltage */
if (desc->fullbatt_uV > 0) {
ret = get_batt_uV(cm, &uV);
- if (!ret && uV >= desc->fullbatt_uV)
- return true;
+ if (!ret && uV >= desc->fullbatt_uV) {
+ is_full = true;
+ goto out;
+ }
}

/* Full, if the capacity is more than fullbatt_soc */
@@ -301,11 +314,15 @@ static bool is_full_charged(struct charger_manager *cm)

ret = power_supply_get_property(fuel_gauge,
POWER_SUPPLY_PROP_CAPACITY, &val);
- if (!ret && val.intval >= desc->fullbatt_soc)
- return true;
+ if (!ret && val.intval >= desc->fullbatt_soc) {
+ is_full = true;
+ goto out;
+ }
}

- return false;
+out:
+ power_supply_put(fuel_gauge);
+ return is_full;
}

/**
@@ -578,14 +595,18 @@ static int cm_get_battery_temperature_by_psy(struct charger_manager *cm,
int *temp)
{
struct power_supply *fuel_gauge;
+ int ret;

fuel_gauge = power_supply_get_by_name(cm->desc->psy_fuel_gauge);
if (!fuel_gauge)
return -ENODEV;

- return power_supply_get_property(fuel_gauge,
+ ret = power_supply_get_property(fuel_gauge,
POWER_SUPPLY_PROP_TEMP,
(union power_supply_propval *)temp);
+ power_supply_put(fuel_gauge);
+
+ return ret;
}

static int cm_get_battery_temperature(struct charger_manager *cm,
@@ -867,7 +888,7 @@ static int charger_get_property(struct power_supply *psy,
{
struct charger_manager *cm = power_supply_get_drvdata(psy);
struct charger_desc *desc = cm->desc;
- struct power_supply *fuel_gauge;
+ struct power_supply *fuel_gauge = NULL;
int ret = 0;
int uV;

@@ -910,12 +931,6 @@ static int charger_get_property(struct power_supply *psy,
case POWER_SUPPLY_PROP_TEMP_AMBIENT:
return cm_get_battery_temperature(cm, &val->intval);
case POWER_SUPPLY_PROP_CAPACITY:
- fuel_gauge = power_supply_get_by_name(cm->desc->psy_fuel_gauge);
- if (!fuel_gauge) {
- ret = -ENODEV;
- break;
- }
-
if (!is_batt_present(cm)) {
/* There is no battery. Assume 100% */
val->intval = 100;
@@ -926,6 +941,12 @@ static int charger_get_property(struct power_supply *psy,
mdelay(2000);
pr_err("End wait...\n");

+ fuel_gauge = power_supply_get_by_name(cm->desc->psy_fuel_gauge);
+ if (!fuel_gauge) {
+ ret = -ENODEV;
+ break;
+ }
+
ret = power_supply_get_property(fuel_gauge,
POWER_SUPPLY_PROP_CAPACITY, val);
if (ret)
@@ -1000,6 +1021,8 @@ static int charger_get_property(struct power_supply *psy,
default:
return -EINVAL;
}
+ if (fuel_gauge)
+ power_supply_put(fuel_gauge);
return ret;
}

@@ -1681,13 +1704,7 @@ static int charger_manager_probe(struct platform_device *pdev)
desc->psy_charger_stat[i]);
return -ENODEV;
}
- }
-
- fuel_gauge = power_supply_get_by_name(desc->psy_fuel_gauge);
- if (!fuel_gauge) {
- dev_err(&pdev->dev, "Cannot find power supply \"%s\"\n",
- desc->psy_fuel_gauge);
- return -ENODEV;
+ power_supply_put(psy);
}

if (desc->polling_interval_ms == 0 ||
@@ -1727,6 +1744,12 @@ static int charger_manager_probe(struct platform_device *pdev)
cm->charger_psy_desc.num_properties = psy_default.num_properties;

/* Find which optional psy-properties are available */
+ fuel_gauge = power_supply_get_by_name(desc->psy_fuel_gauge);
+ if (!fuel_gauge) {
+ dev_err(&pdev->dev, "Cannot find power supply \"%s\"\n",
+ desc->psy_fuel_gauge);
+ return -ENODEV;
+ }
if (!power_supply_get_property(fuel_gauge,
POWER_SUPPLY_PROP_CHARGE_NOW, &val)) {
cm->charger_psy_desc.properties[cm->charger_psy_desc.num_properties] =
@@ -1746,6 +1769,7 @@ static int charger_manager_probe(struct platform_device *pdev)
dev_err(&pdev->dev, "Failed to initialize thermal data\n");
cm->desc->measure_battery_temp = false;
}
+ power_supply_put(fuel_gauge);

INIT_DELAYED_WORK(&cm->fullbatt_vchk_work, fullbatt_vchk);

--
1.9.1


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