linux-kernel - Re: [PATCH] drm/imx: parallel-display: check return value of devm_drm_bridge_add() in imx_pd

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Message-Id: <DG6WXBLE7CZ0.27X527V71HZ7N@bootlin.com>
Date: Thu, 05 Feb 2026 10:15:31 +0100
From: "Luca Ceresoli" <luca.ceresoli@...tlin.com>
To: "Chen Ni" <nichen@...as.ac.cn>, <p.zabel@...gutronix.de>,
 <maarten.lankhorst@...ux.intel.com>, <mripard@...nel.org>,
 <tzimmermann@...e.de>, <airlied@...il.com>, <simona@...ll.ch>,
 <Frank.Li@....com>, <s.hauer@...gutronix.de>, <kernel@...gutronix.de>,
 <festevam@...il.com>, <louis.chauvet@...tlin.com>
Cc: <dri-devel@...ts.freedesktop.org>, <imx@...ts.linux.dev>,
 <linux-arm-kernel@...ts.infradead.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] drm/imx: parallel-display: check return value of
 devm_drm_bridge_add() in imx_pd_probe()

On Wed Feb 4, 2026 at 10:06 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 probe function fails safely rather than proceeding
> with a potentially incomplete bridge setup.
>
> Fixes: bf7e97910b9f ("drm/imx: parallel-display: add the bridge before attaching it")
> 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