Hi Ai Chao,
On 3/26/24 3:54 AM, 艾超 wrote:
> Hi
>
>
>
> WMI
>
>> > The Camera button is a GPIO device. This driver receives ACPI notifyi
>> > when the camera button is switched on/off. This driver is used in
>> > Lenovo A70, it is a Computer integrated machine.
>
>> > +config LENOVO_WMI_CAMERA
>> > + tristate "Lenovo WMI Camera Button driver"
>> > + depends on ACPI_WMI
>> > + depends on INPUT
>
>> No COMPILE_TEST?
>
>
>
> I compile this driver and used Evtest tool to test it on lenovo A70.
>
>
> ...
>
>> > + /* obj->buffer.pointer[0] is camera mode:
>> > + * 0 camera close
>> > + * 1 camera open
>> > + */
>
>> /*
>> * The correct multi-line comment style
>> * is depicted here.
>> */
>
>
>
> Thanks, I will modify it.
> ...
>
>> > + keycode = (camera_mode == SW_CAMERA_ON ?
>> > + KEY_CAMERA_ACCESS_ENABLE : KEY_CAMERA_ACCESS_DISABLE);
>
>> Useless parentheses.
>
>
>
> I think the parentheses is a good programming style and beneficial for reading.
>
>
>
> ...
>
>> > + ret = input_register_device(priv->idev);
>> > + if (ret)
>> > + return ret;
>
>> > + mutex_init(&priv->notify_lock);
>
>> Your mutex should be initialized before use. Have you tested that?
>
>
>
> Yes, I tested it.
>
>
> ...
>
>> > +static struct wmi_driver lenovo_wmi_driver = {
>> > + .driver = {
>> > + .name = "lenovo-wmi-camera",
>> > + .probe_type = PROBE_PREFER_ASYNCHRONOUS,
>> > + },
>> > + .id_table = lenovo_wmi_id_table,
>> > + .no_singleton = true,
>> > + .probe = lenovo_wmi_probe,
>> > + .notify = lenovo_wmi_notify,
>> > + .remove = lenovo_wmi_remove,
>> > +};
>> > +
>
>> Unneeded blank line.
>
>
>
> Thanks, I will modify it.
>
>
>> > +module_wmi_driver(lenovo_wmi_driver);
>
> ...
>
>> > +MODULE_DEVICE_TABLE(wmi, lenovo_wmi_id_table);
>
>> Please, move it closer to the respective table.
>
>
>
> Thanks, I will modify it.
I have already merged this. I'll squash in fixes for the few
small code style remarks from Andy, so there is no need
to send a new version.
Regards,
Hans
