Hi,
On 3/3/22 03:24, Jia-Ju Bai wrote:
> 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@xxxxxxxxxxxxxxx>
> Signed-off-by: Jia-Ju Bai <baijiaju1990@xxxxxxxxx>
> ---
> v2:
> * Fix the code format.
> Thank Hans for good advice.
Thank you for your patch, I've applied this patch to my review-hans
branch:
https://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86.git/log/?h=review-hans
Note it will show up in my review-hans branch once I've pushed my
local branch there, which might take a while.
Once I've run some tests on this branch the patches there will be
added to the platform-drivers-x86/for-next branch and eventually
will be included in the pdx86 pull-request to Linus for the next
merge-window.
Regards,
Hans
>
> ---
> drivers/platform/x86/huawei-wmi.c | 13 ++++++++++---
> 1 file 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)
