linux-kernel - [PATCH 0/9] drm/connector: hdmi: limit infoframes per driver capabilities, second approach

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <20250927-limit-infoframes-2-v1-0-697511bd050b@oss.qualcomm.com>
Date: Sat, 27 Sep 2025 04:04:29 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
To: Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
        Liu Ying <victor.liu@....com>, Andrzej Hajda <andrzej.hajda@...el.com>,
        Neil Armstrong <neil.armstrong@...aro.org>,
        Robert Foss <rfoss@...nel.org>,
        Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
        Jonas Karlman <jonas@...boo.se>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        Rob Clark <robin.clark@....qualcomm.com>,
        Dmitry Baryshkov <lumag@...nel.org>,
        Abhinav Kumar <abhinav.kumar@...ux.dev>,
        Jessica Zhang <jessica.zhang@....qualcomm.com>,
        Sean Paul <sean@...rly.run>,
        Marijn Suijten <marijn.suijten@...ainline.org>,
        Sandy Huang <hjc@...k-chips.com>,
        Heiko Stübner <heiko@...ech.de>,
        Andy Yan <andy.yan@...k-chips.com>, Chen-Yu Tsai <wens@...e.org>,
        Samuel Holland <samuel@...lland.org>
Cc: dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, freedreno@...ts.freedesktop.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org, linux-sunxi@...ts.linux.dev
Subject: [PATCH 0/9] drm/connector: hdmi: limit infoframes per driver
 capabilities, second approach

It's not uncommon for the particular device to support only a subset of
HDMI InfoFrames. Currently it's mostly ignored by the framework: it
calls write_infoframe() / clear_infoframe() callbacks for all frames and
expects them to return success even if the InfoFrame is not supported.

Sort that out, making sure that all interfaces are consistent:
- In atomic_check() callback verify and disable unsupported InfoFrames.
- In write_infoframe() / clear_infoframe() callbacks return -EOPNOTSUPP
  for unsupported InfoFrames.
- In write_device_infoframe() / clear_infoframe() functions warn if the
  callback returns -EOPNOTSUPP for the frame which is set (or was set
  beforehand).

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
---
Dmitry Baryshkov (9):
      drm/display: hdmi-state-helpers: warn on unsupported InfoFrame types
      drm/bridge: adv7511: handle unsupported InfoFrames
      drm/bridge: ite-it6263: handle unsupported InfoFrames
      drm/bridge: lontium-lt9611: handle unsupported InfoFrames
      drm/bridge: synopsys/dw-hdmi-qp: handle unsupported InfoFrames
      drm/msm: hdmi: handle unsupported InfoFrames
      drm/rockchip: rk3066_hdmi: handle unsupported InfoFrames
      drm/rockchip: inno-hdmi: handle unsupported InfoFrames
      drm/sun4i: hdmi: handle unsupported InfoFrames

 drivers/gpu/drm/bridge/adv7511/adv7511_drv.c    | 20 ++++++++--
 drivers/gpu/drm/bridge/ite-it6263.c             | 27 +++++++++++++-
 drivers/gpu/drm/bridge/lontium-lt9611.c         | 22 ++++++++---
 drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.c    | 20 ++++++++--
 drivers/gpu/drm/display/drm_hdmi_state_helper.c |  4 ++
 drivers/gpu/drm/msm/hdmi/hdmi_bridge.c          | 19 ++++++++--
 drivers/gpu/drm/rockchip/inno_hdmi.c            | 46 +++++++++++++++++------
 drivers/gpu/drm/rockchip/rk3066_hdmi.c          | 38 +++++++++++++++----
 drivers/gpu/drm/sun4i/sun4i_hdmi_enc.c          | 49 ++++++++++++++++++++++---
 9 files changed, 202 insertions(+), 43 deletions(-)
---
base-commit: bf2602a3cb2381fb1a04bf1c39a290518d2538d1
change-id: 20250927-limit-infoframes-2-6b93e599e79a

Best regards,
-- 
With best wishes
Dmitry