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Received: from AM7PR04MB7046.eurprd04.prod.outlook.com (2603:10a6:20b:113::22) by GVXPR04MB10109.eurprd04.prod.outlook.com (2603:10a6:150:1b7::12) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.9745.20; Thu, 26 Mar 2026 07:34:01 +0000 Received: from AM7PR04MB7046.eurprd04.prod.outlook.com ([fe80::4609:64af:8a4b:fd64]) by AM7PR04MB7046.eurprd04.prod.outlook.com ([fe80::4609:64af:8a4b:fd64%3]) with mapi id 15.20.9745.019; Thu, 26 Mar 2026 07:34:01 +0000 Message-ID: Date: Thu, 26 Mar 2026 15:35:06 +0800 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 5/8] drm/bridge: dw-hdmi: warn on unsupported attach combination To: Luca Ceresoli , Marek Vasut , Stefan Agner , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Frank Li , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Rob Herring , Saravana Kannan Cc: "Kory Maincent (TI.com)" , =?UTF-8?Q?Herv=C3=A9_Codina?= , Hui Pu , Ian Ray , Thomas Petazzoni , dri-devel@lists.freedesktop.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, Adam Ford , Alexander Stein , Anson Huang , Christopher Obbard , Daniel Scally , Emanuele Ghidoli , Fabio Estevam , Francesco Dolcini , Frieder Schrempf , Gilles Talis , =?UTF-8?B?R29yYW4gUmHEkWVub3ZpxIc=?= , Heiko Schocher , Joao Paulo Goncalves , Josua Mayer , Kieran Bingham , Marco Felsch , Martyn Welch , Oleksij Rempel , Peng Fan , Philippe Schenker , Richard Hu , Shengjiu Wang , Stefan Eichenberger , Vitor Soares References: <20260320-drm-lcdif-dbanc-v1-0-479a04133e70@bootlin.com> <20260320-drm-lcdif-dbanc-v1-5-479a04133e70@bootlin.com> From: Liu Ying Content-Language: en-US In-Reply-To: <20260320-drm-lcdif-dbanc-v1-5-479a04133e70@bootlin.com> Content-Type: text/plain; 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Emit a warning when this is violated. Also > return -EINVAL which would be returned by drm_bridge_attach() right after > anyway. > > Signed-off-by: Luca Ceresoli > > --- > > Note: Returning when teh warning triggers does not change the functional > behaviour of this function. It is not strictly necessary in this patch but > it will have to be done anyway in the following patch. > --- > drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 4 ++++ > 1 file changed, 4 insertions(+) Reviewed-by: Liu Ying -- Regards, Liu Ying