linux-kernel - Re: [PATCH v2 4/6] media: uvcvideo: Document how to format GUIDs

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Message-ID: <93931a19-43a5-411b-9f81-60da07a8229b@kernel.org>
Date: Mon, 8 Dec 2025 12:19:40 +0100
From: Hans de Goede <hansg@...nel.org>
To: Ricardo Ribalda <ribalda@...omium.org>,
 Laurent Pinchart <laurent.pinchart@...asonboard.com>,
 Mauro Carvalho Chehab <mchehab@...nel.org>,
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
 linux-usb@...r.kernel.org
Subject: Re: [PATCH v2 4/6] media: uvcvideo: Document how to format GUIDs

Hi,

On 19-Nov-25 8:37 PM, Ricardo Ribalda wrote:
> Manual formatting the GUIDs can lead to errors, document a
> programmatically way to format the GUIDs from lsusb into something tha
> the driver can use.
> 
> Signed-off-by: Ricardo Ribalda <ribalda@...omium.org>

Thanks patch looks good to me:

Reviewed-by: Hans de Goede <johannes.goede@....qualcomm.com>

Since this is independent of the rest of the series I've merged this into my local
uvc/for-next branch which I will push out later today.

Regards,

Hans



> ---
>  include/linux/usb/uvc.h | 8 ++++++++
>  1 file changed, 8 insertions(+)
> 
> diff --git a/include/linux/usb/uvc.h b/include/linux/usb/uvc.h
> index b939a01da11466747249c64c72a3ea40cd364a59..dea23aabbad48270c807463c1a7e1c0d1b79fc1f 100644
> --- a/include/linux/usb/uvc.h
> +++ b/include/linux/usb/uvc.h
> @@ -10,6 +10,14 @@
>  
>  /* ------------------------------------------------------------------------
>   * GUIDs
> + *
> + * The GUID returned by lsusb can be converted to this format with the
> + * following python snippet:
> + *
> + * import uuid
> + * id = "{01234567-89ab-cdef-0123-456789abcdef}"
> + * le = uuid.UUID(id).bytes_le
> + * print("{" + ", ".join([f"0x{b:02x}" for b in le]) + "}")
>   */
>  #define UVC_GUID_UVC_CAMERA \
>  	{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
>