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Sun, 15 Nov 2026 01:10:36 -0600 From: Wayne Lin To: CC: Paul Menzel , Harry Wentland , Leo Li , Rodrigo Siqueira , Alex Deucher , =?UTF-8?q?Christian=20K=C3=B6nig?= , David Airlie , Simona Vetter , Alex Hung , Wentao Liang , , Subject: Re: [PATCH v2] drm/amd/display: Don't warn about vendor infoframe for non-infoframe sinks Date: Sun, 15 Nov 2026 15:11:31 +0800 Message-ID: <20261115071131.1466723-1-Wayne.Lin@amd.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20261027205229.268908-2-pmenzel@molgen.mpg.de> References: <20261027205229.268908-2-pmenzel@molgen.mpg.de> X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8bit X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CH2PEPF000166C9:EE_|PH7PR12MB9067:EE_ X-MS-Office365-Filtering-Correlation-Id: 717e549f-732c-413d-2bb8-08df42e78e1a X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|23010399003|376014|1800799024|82310400026|36860700016|10067099003|5023799004|11063799006|56012099006|261026121527099003|261026140227099003|261028144727099003|261022105027099003|261021123027099003|261021121427099003|261102123227099003|261009223027099003|18002099003|22082099003|6133799003|13003099007; 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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: Up8/L/2pJaRd49RX4LHFyIprMcbX1biKy3nD/OhU1jaMk2GyBnDx3qZ5D6zlW+5URrMfc2hJ8qBek9OiI4n06SKMO4+24Zdk6caiI6AWVTeZVLkTHSNqcSIKCDED3/fiGZUjZoO+0E/ohlJUFQDtmuQDB3Wbp/eKm9+6D7OUDN8bLRXOZtdgef8MJmer9zk/ta9mIcZrqXnIRzQBCIABgZ5PsqA/mYRLp7mYAqcrXCFs7EMDTSZVyYmFxdfdVOFWKE4sXCMz8xx74eUNeRCzGdlTRxOPXLjKMDGY7U5ME06p6ILOUuUh+8SAidaxg6kfSVHyZrrz8SqYUAhudcD09fRXnGVS6IR3qB2zb8h4l4MyiW7WSUlvURA0NMDObkCBFjVTYLqLDz1Wg7rLJflU+SboA6ZHPpBgVmXyfYBKOHkxD0r/ewTdESxLtu8Jk9SA X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 15 Nov 2026 07:10:39.8580 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 717e549f-732c-413d-2bb8-08df42e78e1a X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[satlexmb08.amd.com] X-MS-Exchange-CrossTenant-AuthSource: CH2PEPF000166C9.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH7PR12MB9067 Reviewed-by: Wayne Lin On Tue, 27 Oct 2026 21:52:22 +0100, Paul Menzel wrote: > With an EIZO EV2781 connected over HDMI to an AMD Ryzen 3 2200G (Raven) > on an MSI B350M MORTAR (MS-7A37), Linux logs at every boot since v6.16: > > amdgpu 0000:30:00.0: [drm] Failed to setup vendor infoframe on connector HDMI-A-1: -22 > > Commit 6027cbee1900 ("drm/amd/display: Add error check for avi and > vendor infoframe setup function") started to log the return value of > drm_hdmi_vendor_infoframe_from_display_mode(). With `frame` and `mode` > being non-NULL, the helper only fails with -EINVAL, if the sink does > not support HDMI infoframes, that means, if > `connector->display_info.has_hdmi_infoframe` is false, and its > kernel-doc says, that this error can be safely ignored. > drm_parse_hdmi_vsdb_video() only sets `has_hdmi_infoframe`, if the HDMI > VSDB has HDMI_Video_present set, and drm_parse_hdmi_forum_scds() sets > it for sinks with an HF-SCDB. So an HDMI sink, whose VSDB lacks > HDMI_Video_present, triggers the warning, although nothing failed. > > The EIZO EV2781 is such a sink. Its HDMI VSDB has a payload of only > seven bytes (source physical address, Supports_AI, and a maximum TMDS > clock of 250 MHz), so the byte with HDMI_Video_present is absent, and > the EDID has no HF-SCDB: > > 67 03 0c 00 10 00 80 32 > > Only warn, if the sink supports HDMI infoframes. The infoframe setup > itself is unchanged. > > Fixes: 6027cbee1900 ("drm/amd/display: Add error check for avi and vendor infoframe setup function") > Closes: https://gitlab.freedesktop.org/drm/amd/-/work_items/5025 > Signed-off-by: Paul Menzel > --- > > v1 → v2: Add Signed-off-by line. > > Notes: > > claude-opus-5-5 (Claude Code) assisted in analysis, code change and > commit message. > > drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_connector.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_connector.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_connector.c > index ded8e21897f1c..636dd2dedd73d 100644 > --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_connector.c > +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_connector.c > @@ -941,7 +941,8 @@ STATIC_IFN_KUNIT void fill_stream_properties_from_drm_display_mode( > err = drm_hdmi_vendor_infoframe_from_display_mode(&hv_frame, > (struct drm_connector *)connector, > mode_in); > - if (err < 0) > + /* Sinks without HDMI infoframe support make it fail with -EINVAL. */ > + if (err < 0 && info->has_hdmi_infoframe) > drm_warn_once(connector->dev, "Failed to setup vendor infoframe on connector %s: %zd\n", > connector->name, err); > timing_out->hdmi_vic = hv_frame.vic; > > base-commit: 77f548b127c6de34ce271fa09ba270cb1ef9f2da > -- > 2.54.0 > >