Re: [PATCH 2/2 v4] HID: leds: move led_mode attribute to led-class devices in MSI GT683R driver

[Johan Hovold]

On Tue, Jul 01, 2014 at 08:50:54PM +0300, Janne Kanniainen wrote:
  
> -static DEVICE_ATTR_RW(leds_mode);
> +static DEVICE_ATTR_RW(mode);
> +
> +static struct attribute *gt683r_led_attrs[] = {
> +     &dev_attr_mode.attr,
> +     NULL
> +};
> +
> +ATTRIBUTE_GROUPS(gt683r_led);

I was referring to the name field of struct attribute_group (and not of
struct hid_driver). Specifically, that means that you cannot use the
ATTRIBUTE_GROUPS macro (which leaves the name field unset), but rather
should define the two corresponding structs directly as follows:

        static const struct attribute_group gt683r_led_group = {
               .name = "gt683r",
               .attrs = gt683r_led_attrs,
        };
        
        static const struct attribute_group *gt683r_led_groups[] = {
               &gt683r_led_group,
               NULL
        };

That way the mode attribute will be created in a subdirectory (named
gt683r) of the led class device.

>  static int gt683r_led_probe(struct hid_device *hdev,
>                       const struct hid_device_id *id)
> @@ -261,6 +270,8 @@ static int gt683r_led_probe(struct hid_device *hdev,
>               led->led_devs[i].name = name;
>               led->led_devs[i].max_brightness = 1;
>               led->led_devs[i].brightness_set = gt683r_brightness_set;
> +             led->led_devs[i].groups = gt683r_led_groups;
> +
>               ret = led_classdev_register(&hdev->dev, &led->led_devs[i]);
>               if (ret) {
>                       hid_err(hdev, "could not register led device\n");
> @@ -268,12 +279,6 @@ static int gt683r_led_probe(struct hid_device *hdev,
>               }
>       }

<snip>

> @@ -298,7 +302,7 @@ static void gt683r_led_remove(struct hid_device *hdev)
>  static struct hid_driver gt683r_led_driver = {
>       .probe = gt683r_led_probe,
>       .remove = gt683r_led_remove,
> -     .name = "gt683r_led",
> +     .name = "gt683r",

So you should skip this bit.

>       .id_table = gt683r_led_id,
>  };

Johan
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