[PATCH] power: supply: fix memory leaks

[wu000273]

From: Qiushi Wu <wu000...@umn.edu>

In function power_supply_add_hwmon_sysfs(), psyhw->props is
allocated by bitmap_zalloc(). But this pointer is not deallocated
in several error paths, which lead to memory leak bugs. To fix
this, we can call bitmap_free() to free this pointer.

Signed-off-by: Qiushi Wu <wu000...@umn.edu>
---
 drivers/power/supply/power_supply_hwmon.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/power/supply/power_supply_hwmon.c 
b/drivers/power/supply/power_supply_hwmon.c
index 75cf861ba492..7453390ab7a4 100644
--- a/drivers/power/supply/power_supply_hwmon.c
+++ b/drivers/power/supply/power_supply_hwmon.c
@@ -307,7 +307,7 @@ int power_supply_add_hwmon_sysfs(struct power_supply *psy)
        ret = devm_add_action(dev, power_supply_hwmon_bitmap_free,
                              psyhw->props);
        if (ret)
-               goto error;
+               goto out_free;
 
        for (i = 0; i < desc->num_properties; i++) {
                const enum power_supply_property prop = desc->properties[i];
@@ -342,7 +342,7 @@ int power_supply_add_hwmon_sysfs(struct power_supply *psy)
                new_name = devm_kstrdup(dev, name, GFP_KERNEL);
                if (!new_name) {
                        ret = -ENOMEM;
-                       goto error;
+                       goto out_free;
                }
                strreplace(new_name, '-', '_');
                name = new_name;
@@ -353,10 +353,12 @@ int power_supply_add_hwmon_sysfs(struct power_supply *psy)
                                                NULL);
        ret = PTR_ERR_OR_ZERO(hwmon);
        if (ret)
-               goto error;
+               goto out_free;
 
        devres_close_group(dev, power_supply_add_hwmon_sysfs);
        return 0;
+out_free:
+       bitmap_free(psyhw->props);
 error:
        devres_release_group(dev, NULL);
        return ret;
-- 
2.17.1