linux-kernel - Re: [PATCH v3] drm/bridge: synopsys: dw-dp: Check return value of devm_drm_bridge_add() in dw_dp

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Message-Id: <DG7PYJLD18J7.3HHO43I8GYGTM@bootlin.com>
Date: Fri, 06 Feb 2026 09:00:39 +0100
From: "Luca Ceresoli" <luca.ceresoli@...tlin.com>
To: "Chen Ni" <nichen@...as.ac.cn>, <andy.yan@...k-chips.com>,
 <andrzej.hajda@...el.com>, <neil.armstrong@...aro.org>, <rfoss@...nel.org>,
 <Laurent.pinchart@...asonboard.com>, <jonas@...boo.se>,
 <jernej.skrabec@...il.com>, <maarten.lankhorst@...ux.intel.com>,
 <mripard@...nel.org>, <tzimmermann@...e.de>, <airlied@...il.com>,
 <simona@...ll.ch>, <rgallaispou@...il.com>
Cc: <dri-devel@...ts.freedesktop.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3] drm/bridge: synopsys: dw-dp: Check return value of
 devm_drm_bridge_add() in dw_dp_bind()

On Fri Feb 6, 2026 at 3:30 AM CET, Chen Ni wrote:
> Return the value of devm_drm_bridge_add() in order to propagate the
> error properly, if it fails due to resource allocation failure or bridge
> registration failure.
>
> This ensures that the bind function fails safely rather than proceeding
> with a potentially incomplete bridge setup.
>
> Fixes: b726970486d8 ("drm/bridge: synopsys: dw-dp: add bridge before attaching")
> Signed-off-by: Chen Ni <nichen@...as.ac.cn>

Reviewed-by: Luca Ceresoli <luca.ceresoli@...tlin.com>

--
Luca Ceresoli, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com