linux-kernel - Re: [PATCH v2] HID: add KEY_CAMERA

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Date:   Thu, 16 Feb 2023 08:19:47 +0100
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Qi Feng <fengqi706@...il.com>
Cc:     jikos@...nel.org, benjamin.tissoires@...hat.com,
        rydberg@...math.org, linux-input@...r.kernel.org,
        linux-kernel@...r.kernel.org, fengqi <fengqi@...omi.com>
Subject: Re: [PATCH v2] HID: add KEY_CAMERA_FOCUS event in HID

On Tue, Jan 31, 2023 at 07:46:32PM +0800, Qi Feng wrote:
> From: fengqi <fengqi@...omi.com>
> 
> Our HID device need KEY_CAMERA_FOCUS event to control camera, but this
> event is non-existent in current HID driver.we add this event in hid-input.c

Please read the section entitled "The canonical patch format" in the
kernel file, Documentation/process/submitting-patches.rst for what is
needed in order to properly describe the change.

> We committed this v2 version following your previous suggestion

This line is not needed in a changelog text.

> 
> Signed-off-by: fengqi <fengqi@...omi.com>
> ---
>  drivers/hid/hid-input.c | 7 +++++++
>  include/linux/hid.h     | 1 +
>  2 files changed, 8 insertions(+)
> 
> diff --git a/drivers/hid/hid-input.c b/drivers/hid/hid-input.c
> index 9b59e436df0a..05fa3e191574 100644
> --- a/drivers/hid/hid-input.c
> +++ b/drivers/hid/hid-input.c
> @@ -1221,6 +1221,13 @@ static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_fiel
>  			return;
>  		}
>  		goto unknown;
> +	case HID_UP_CAMERA:
> +		switch (usage->hid & HID_USAGE){
> +		case 0x020: map_key_clear(KEY_CAMERA_FOCUS);	break;
> +		case 0x021: map_key_clear(KEY_CAMERA);		break;
> +		default: 	goto ignore;
> +		}
> +		break;		

Always run checkpatch.pl on your submission before sending it out,
otherwise it obviously can not be accepted.

thanks,

greg k-h