[PATCH 4.14 118/242] power: supply: bq24190_charger: fix reference leak

Greg Kroah-Hartman
2020-12-28T13:12:54Z

From: Zhang Qilong <zhangqilong3@huawei.com>

[ Upstream commit b2f6cb78eaa1cad57dd3fe11d0458cd4fae9a584 ]

pm_runtime_get_sync will increment pm usage counter even it
failed. Forgetting to call pm_runtime_put_noidle will result
in reference leak in callers(bq24190_sysfs_show,
bq24190_charger_get_property, bq24190_charger_set_property,
bq24190_battery_get_property, bq24190_battery_set_property),
so we should fix it.

Fixes: f385e6e2a1532 ("power: bq24190_charger: Use PM runtime autosuspend")
Signed-off-by: Zhang Qilong <zhangqilong3@huawei.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/power/supply/bq24190_charger.c | 20 +++++++++++++++-----
1 file changed, 15 insertions(+), 5 deletions(-)

diff --git a/drivers/power/supply/bq24190_charger.c b/drivers/power/supply/bq24190_charger.c
index 35ff406aca483..0906f6b562bc4 100644
--- a/drivers/power/supply/bq24190_charger.c
+++ b/drivers/power/supply/bq24190_charger.c
@@ -450,8 +450,10 @@ static ssize_t bq24190_sysfs_show(struct device *dev,
return -EINVAL;

ret = pm_runtime_get_sync(bdi->dev);
- if (ret < 0)
+ if (ret < 0) {
+ pm_runtime_put_noidle(bdi->dev);
return ret;
+ }

ret = bq24190_read_mask(bdi, info->reg, info->mask, info->shift, &v);
if (ret)
@@ -1086,8 +1088,10 @@ static int bq24190_charger_get_property(struct power_supply *psy,
dev_dbg(bdi->dev, "prop: %d\n", psp);

ret = pm_runtime_get_sync(bdi->dev);
- if (ret < 0)
+ if (ret < 0) {
+ pm_runtime_put_noidle(bdi->dev);
return ret;
+ }

switch (psp) {
case POWER_SUPPLY_PROP_CHARGE_TYPE:
@@ -1158,8 +1162,10 @@ static int bq24190_charger_set_property(struct power_supply *psy,
dev_dbg(bdi->dev, "prop: %d\n", psp);

ret = pm_runtime_get_sync(bdi->dev);
- if (ret < 0)
+ if (ret < 0) {
+ pm_runtime_put_noidle(bdi->dev);
return ret;
+ }

switch (psp) {
case POWER_SUPPLY_PROP_ONLINE:
@@ -1424,8 +1430,10 @@ static int bq24190_battery_get_property(struct power_supply *psy,
dev_dbg(bdi->dev, "prop: %d\n", psp);

ret = pm_runtime_get_sync(bdi->dev);
- if (ret < 0)
+ if (ret < 0) {
+ pm_runtime_put_noidle(bdi->dev);
return ret;
+ }

switch (psp) {
case POWER_SUPPLY_PROP_STATUS:
@@ -1470,8 +1478,10 @@ static int bq24190_battery_set_property(struct power_supply *psy,
dev_dbg(bdi->dev, "prop: %d\n", psp);

ret = pm_runtime_get_sync(bdi->dev);
- if (ret < 0)
+ if (ret < 0) {
+ pm_runtime_put_noidle(bdi->dev);
return ret;
+ }

switch (psp) {
case POWER_SUPPLY_PROP_ONLINE:
--
2.27.0