linux-kernel - Re: [PATCH 11/12] drm/bridge: samsung-dsim: samsung_dsim_host_attach: don't use the bridge pointer as an error indicator

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Message-ID: <8f4ea75e3ee9d192f0fe649338827581@kernel.org>
Date: Wed, 07 Jan 2026 14:11:47 +0000
From: "Maxime Ripard" <mripard@...nel.org>
To: "Luca Ceresoli" <luca.ceresoli@...tlin.com>
Cc: benjamin.gaignard@...aro.org, dri-devel@...ts.freedesktop.org, imx@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org, "Adrien
 Grassein" <adrien.grassein@...il.com>, "Andrzej Hajda" <andrzej.hajda@...el.com>, "David
 Airlie" <airlied@...il.com>, "Fabio Estevam" <festevam@...il.com>, "Hui Pu" <Hui.Pu@...ealthcare.com>, "Inki
 Dae" <inki.dae@...sung.com>, "Jagan Teki" <jagan@...rulasolutions.com>, "Jernej
 Skrabec" <jernej.skrabec@...il.com>, "Jonas Karlman" <jonas@...boo.se>, "Laurent
 Pinchart" <Laurent.pinchart@...asonboard.com>, "Liu Ying" <victor.liu@....com>, "Maarten
 Lankhorst" <maarten.lankhorst@...ux.intel.com>, "Marek Szyprowski" <m.szyprowski@...sung.com>, "Maxime
 Ripard" <mripard@...nel.org>, "Neil Armstrong" <neil.armstrong@...aro.org>, "Pengutronix
 Kernel Team" <kernel@...gutronix.de>, "Philippe Cornu" <philippe.cornu@...com>, "Robert
 Foss" <rfoss@...nel.org>, "Sascha Hauer" <s.hauer@...gutronix.de>, "Shawn
 Guo" <shawnguo@...nel.org>, "Simona Vetter" <simona@...ll.ch>, "Thomas
 Petazzoni" <thomas.petazzoni@...tlin.com>, "Thomas Zimmermann" <tzimmermann@...e.de>
Subject: Re: [PATCH 11/12] drm/bridge: samsung-dsim:
 samsung_dsim_host_attach: don't use the bridge pointer as an error
 indicator

On Wed, 7 Jan 2026 14:13:02 +0100, Luca Ceresoli wrote:
> In preparation to handle refcounting of the out_bridge, we need to ensure
> the out_bridge pointer contains either a valid bridge pointer or NULL, not
> an ERR_PTR. Otherwise calls such as drm_bridge_get/put() would try to
> redeference an ERR_PTR.
> 
> 
> [ ... ]

Acked-by: Maxime Ripard <mripard@...nel.org>

Thanks!
Maxime