hwmon: (asus-ec-sensors) Add checks for devm_kcalloc

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>

diff --git a/drivers/hwmon/asus-ec-sensors.c b/drivers/hwmon/asus-ec-sensors.c
index 81e688975c6a79583e61004f2ff4d47901521f93..a901e4e33d81d0430df620e06fd2d9adf428b23e 100644 (file)
--- 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) {