[PATCH 6.0 074/124] hwmon: (asus-ec-sensors) Add checks for devm_kcalloc

Greg Kroah-Hartman
2022-12-05T19:26:01Z

From: Yuan Can <yuancan@huawei.com>

[ Upstream commit 9bdc112be727cf1ba65be79541147f960c3349d8 ]

As the devm_kcalloc may return NULL, the return value needs to be checked
to avoid NULL poineter dereference.

Fixes: d0ddfd241e57 ("hwmon: (asus-ec-sensors) add driver for ASUS EC")
Signed-off-by: Yuan Can <yuancan@huawei.com>
Link: https://lore.kernel.org/r/20221125014329.121560-1-yuancan@huawei.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/hwmon/asus-ec-sensors.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/drivers/hwmon/asus-ec-sensors.c b/drivers/hwmon/asus-ec-sensors.c
index 81e688975c6a..a901e4e33d81 100644
--- a/drivers/hwmon/asus-ec-sensors.c
+++ b/drivers/hwmon/asus-ec-sensors.c
@@ -938,6 +938,8 @@ static int asus_ec_probe(struct platform_device *pdev)
ec_data->nr_sensors = hweight_long(ec_data->board_info->sensors);
ec_data->sensors = devm_kcalloc(dev, ec_data->nr_sensors,
sizeof(struct ec_sensor), GFP_KERNEL);
+ if (!ec_data->sensors)
+ return -ENOMEM;

status = setup_lock_data(dev);
if (status) {
--
2.35.1