power: supply: core: fix memory leak in HWMON error path
authorQiushi Wu <wu000273@umn.edu>
Sat, 2 May 2020 23:33:38 +0000 (18:33 -0500)
committerSebastian Reichel <sre@kernel.org>
Sun, 3 May 2020 00:17:13 +0000 (02:17 +0200)
commit1d7a7128a2e9e1f137c99b0a44e94d70a77343e3
tree8b3230a644063cbaffed7dd23c75f2c5fd645d31
parent21d4cdf8b3c4352c38a36acee4c5bdc44cf5a1bc
power: supply: core: fix memory leak in HWMON error path

In function power_supply_add_hwmon_sysfs(), psyhw->props is
allocated by bitmap_zalloc(). But this pointer is not deallocated
when devm_add_action fail,  which lead to a memory leak bug. To fix
this, we replace devm_add_action with devm_add_action_or_reset.

Cc: stable@kernel.org
Fixes: e67d4dfc9ff19 ("power: supply: Add HWMON compatibility layer")
Signed-off-by: Qiushi Wu <wu000273@umn.edu>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
drivers/power/supply/power_supply_hwmon.c