# Re: \[PATCH 6/8\] backlight: backlight: Supply description for function args in existing Kerneldocs

- From: Daniel Thompson \<hidden\>
- Date: 2020-06-25 09:43:51 
- List: linux-arm-kernel
- Page: https://ratatoskr.run/linux-arm-kernel/2020/06/6014547
- Thread: https://ratatoskr.run/dri-devel/2020/06/6013676/t.md

```text
On Wed, Jun 24, 2020 at 03:57:19PM +0100, Lee Jones wrote:
> Kerneldoc syntax is used, but not complete.  Descriptions required.
> 
> Prevents warnings like:
> 
>  drivers/video/backlight/backlight.c:329: warning: Function parameter or member 'reason' not described in 'backlight_force_update'
>  drivers/video/backlight/backlight.c:354: warning: Function parameter or member 'props' not described in 'backlight_device_register'
> 
> Cc: <redacted>
> Cc: Bartlomiej Zolnierkiewicz <redacted>
> Cc: Jamey Hicks <redacted>
> Cc: Andrew Zabolotny <redacted>
> Signed-off-by: Lee Jones <redacted>

Reviewed-by: Daniel Thompson <redacted>


> ---
>  drivers/video/backlight/backlight.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/video/backlight/backlight.c b/drivers/video/backlight/backlight.c
> index 92d80aa0c0ef1..744ba58488e01 100644
> --- a/drivers/video/backlight/backlight.c
> +++ b/drivers/video/backlight/backlight.c
> @@ -320,6 +320,7 @@ ATTRIBUTE_GROUPS(bl_device);
>   * backlight_force_update - tell the backlight subsystem that hardware state
>   *   has changed
>   * @bd: the backlight device to update
> + * @reason: reason for update
>   *
>   * Updates the internal state of the backlight in response to a hardware event,
>   * and generate a uevent to notify userspace
> @@ -344,6 +345,7 @@ EXPORT_SYMBOL(backlight_force_update);
>   * @devdata: an optional pointer to be stored for private driver use. The
>   *   methods may retrieve it by using bl_get_data(bd).
>   * @ops: the backlight operations structure.
> + * @props: pointer to backlight's properties structure.
>   *
>   * Creates and registers new backlight device. Returns either an
>   * ERR_PTR() or a pointer to the newly allocated device.
> -- 
> 2.25.1
> 

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