diff options
| author | Jia-Ju Bai <baijiaju1990@gmail.com> | 2022-03-02 18:24:21 -0800 |
|---|---|---|
| committer | Hans de Goede <hdegoede@redhat.com> | 2022-03-08 16:33:15 +0100 |
| commit | c91a5b1c221a58d008485cf7d02ccce73108b119 (patch) | |
| tree | 9975e3c41415be9ceaa08c1d8a8aa4799711e8fe /drivers | |
| parent | e1c21608e3cfc4b44ecdf04e12986b6564667095 (diff) | |
| download | linux-c91a5b1c221a58d008485cf7d02ccce73108b119.tar.bz2 | |
platform/x86: huawei-wmi: check the return value of device_create_file()
The function device_create_file() in huawei_wmi_battery_add() can fail,
so its return value should be checked.
Fixes: 355a070b09ab ("platform/x86: huawei-wmi: Add battery charging thresholds")
Reported-by: TOTE Robot <oslab@tsinghua.edu.cn>
Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Link: https://lore.kernel.org/r/20220303022421.313-1-baijiaju1990@gmail.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/platform/x86/huawei-wmi.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/drivers/platform/x86/huawei-wmi.c b/drivers/platform/x86/huawei-wmi.c index a2d846c4a7ee..eac3e6b4ea11 100644 --- a/drivers/platform/x86/huawei-wmi.c +++ b/drivers/platform/x86/huawei-wmi.c @@ -470,10 +470,17 @@ static DEVICE_ATTR_RW(charge_control_thresholds); static int huawei_wmi_battery_add(struct power_supply *battery) { - device_create_file(&battery->dev, &dev_attr_charge_control_start_threshold); - device_create_file(&battery->dev, &dev_attr_charge_control_end_threshold); + int err = 0; - return 0; + err = device_create_file(&battery->dev, &dev_attr_charge_control_start_threshold); + if (err) + return err; + + err = device_create_file(&battery->dev, &dev_attr_charge_control_end_threshold); + if (err) + device_remove_file(&battery->dev, &dev_attr_charge_control_start_threshold); + + return err; } static int huawei_wmi_battery_remove(struct power_supply *battery) |