linux-kernel - Re: [RFC 2/7] fixup! media: uapi: h264: update reference lists

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Date:   Thu, 25 Jun 2020 17:30:33 +0200
From:   Tomasz Figa <tfiga@...omium.org>
To:     Ezequiel Garcia <ezequiel@...labora.com>
Cc:     Linux Media Mailing List <linux-media@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        kernel@...labora.com, Jonas Karlman <jonas@...boo.se>,
        Hans Verkuil <hverkuil@...all.nl>,
        Alexandre Courbot <acourbot@...omium.org>,
        Jeffrey Kardatzke <jkardatzke@...omium.org>,
        Nicolas Dufresne <nicolas.dufresne@...labora.com>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Maxime Ripard <mripard@...nel.org>,
        Paul Kocialkowski <paul.kocialkowski@...tlin.com>
Subject: Re: [RFC 2/7] fixup! media: uapi: h264: update reference lists

On Tue, Jun 23, 2020 at 8:29 PM Ezequiel Garcia <ezequiel@...labora.com> wrote:
>
> Align v4l2_h264_reference to 32-bits, giving some room
> for future extensions.
>
> Signed-off-by: Ezequiel Garcia <ezequiel@...labora.com>
> ---
>  .../userspace-api/media/v4l/ext-ctrls-codec.rst  |  3 +++
>  drivers/media/v4l2-core/v4l2-ctrls.c             | 16 ++++++++++++++++
>  include/media/h264-ctrls.h                       |  7 +++++--
>  3 files changed, 24 insertions(+), 2 deletions(-)
>
> diff --git a/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst b/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst
> index 6c36d298db20..7af12447a5b0 100644
> --- a/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst
> +++ b/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst
> @@ -1943,6 +1943,9 @@ enum v4l2_mpeg_video_h264_hierarchical_coding_type -
>      * - __u8
>        - ``index``
>        -
> +    * - __u32
> +      - ``reserved``
> +      - Applications and drivers must set this to zero.

__u16?

Best regards,
Tomasz