linux-kernel - Re: [PATCH] video/hdmi: convert *_infoframe

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Message-ID: <ibwl2bpz5bs72co4ivkvjcc35lv5mqyuvj2hbr3p54hliujklm@uje662ldqfdw>
Date:   Thu, 10 Aug 2023 10:13:26 +0200
From:   Maxime Ripard <mripard@...nel.org>
To:     Nikita Zhandarovich <n.zhandarovich@...tech.ru>
Cc:     David Airlie <airlied@...il.com>, Daniel Vetter <daniel@...ll.ch>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Alex Deucher <alexander.deucher@....com>,
        Alain Volmat <alain.volmat@...s.st.com>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        Jani Nikula <jani.nikula@...ux.intel.com>,
        Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
        Chun-Kuang Hu <chunkuang.hu@...nel.org>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Christian König <christian.koenig@....com>,
        "Pan, Xinhui" <Xinhui.Pan@....com>,
        Thierry Reding <thierry.reding@...il.com>,
        Mikko Perttunen <mperttunen@...dia.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        Emma Anholt <emma@...olt.net>, Helge Deller <deller@....de>,
        Ville Syrjälä <ville.syrjala@...ux.intel.com>,
        Ankit Nautiyal <ankit.k.nautiyal@...el.com>,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        intel-gfx@...ts.freedesktop.org,
        linux-mediatek@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org,
        amd-gfx@...ts.freedesktop.org, linux-tegra@...r.kernel.org,
        linux-fbdev@...r.kernel.org, lvc-project@...uxtesting.org
Subject: Re: [PATCH] video/hdmi: convert *_infoframe_init() functions to void

Hi,

On Tue, Aug 08, 2023 at 11:02:45AM -0700, Nikita Zhandarovich wrote:
> Four hdmi_*_infoframe_init() functions that initialize different
> types of hdmi infoframes only return the default 0 value, contrary to
> their descriptions. Yet these functions are still unnecessarily checked
> against possible errors in case of failure.
> 
> Remove redundant error checks in calls to following functions:
> - hdmi_spd_infoframe_init
> - hdmi_audio_infoframe_init
> - hdmi_vendor_infoframe_init
> - hdmi_drm_infoframe_init
> Also, convert these functions to 'void' and fix their descriptions.

I'm not sure what value it actually adds. None of them return any
errors, but very well might if we started to be a bit serious about it.

Since the error handling is already there, then I'd rather leave it
there.

> Fixes: 2c676f378edb ("[media] hdmi: added unpack and logging functions for InfoFrames")

I'm confused about that part. What does it fix exactly?

Maxime

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