linux-kernel - [PATCH 04/12] drm/bridge: thc63lvd1024: convert to of_drm_find_and_get

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Message-Id: <20260107-drm-bridge-alloc-getput-drm_of_find_bridge-2-v1-4-283d7bba061a@bootlin.com>
Date: Wed, 07 Jan 2026 14:12:55 +0100
From: Luca Ceresoli <luca.ceresoli@...tlin.com>
To: Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, 
 Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>, 
 David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>, 
 Philippe Cornu <philippe.cornu@...com>, benjamin.gaignard@...aro.org, 
 Andrzej Hajda <andrzej.hajda@...el.com>, 
 Neil Armstrong <neil.armstrong@...aro.org>, Robert Foss <rfoss@...nel.org>, 
 Laurent Pinchart <Laurent.pinchart@...asonboard.com>, 
 Jonas Karlman <jonas@...boo.se>, Jernej Skrabec <jernej.skrabec@...il.com>, 
 Adrien Grassein <adrien.grassein@...il.com>, Liu Ying <victor.liu@....com>, 
 Shawn Guo <shawnguo@...nel.org>, Sascha Hauer <s.hauer@...gutronix.de>, 
 Pengutronix Kernel Team <kernel@...gutronix.de>, 
 Fabio Estevam <festevam@...il.com>, Inki Dae <inki.dae@...sung.com>, 
 Jagan Teki <jagan@...rulasolutions.com>, 
 Marek Szyprowski <m.szyprowski@...sung.com>
Cc: Hui Pu <Hui.Pu@...ealthcare.com>, 
 Thomas Petazzoni <thomas.petazzoni@...tlin.com>, 
 dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org, 
 imx@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org, 
 Luca Ceresoli <luca.ceresoli@...tlin.com>
Subject: [PATCH 04/12] drm/bridge: thc63lvd1024: convert to
 of_drm_find_and_get_bridge()

of_drm_find_bridge() is deprecated. Move to its replacement
of_drm_find_and_get_bridge() which gets a bridge reference, and ensure it
is put when done by using the drm_bridge::next_bridge pointer.

Signed-off-by: Luca Ceresoli <luca.ceresoli@...tlin.com>
---
 drivers/gpu/drm/bridge/thc63lvd1024.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/bridge/thc63lvd1024.c b/drivers/gpu/drm/bridge/thc63lvd1024.c
index 2cb7cd0c0608..c804222846c3 100644
--- a/drivers/gpu/drm/bridge/thc63lvd1024.c
+++ b/drivers/gpu/drm/bridge/thc63lvd1024.c
@@ -32,7 +32,6 @@ struct thc63_dev {
 	struct gpio_desc *oe;
 
 	struct drm_bridge bridge;
-	struct drm_bridge *next;
 
 	struct drm_bridge_timings timings;
 };
@@ -48,7 +47,7 @@ static int thc63_attach(struct drm_bridge *bridge,
 {
 	struct thc63_dev *thc63 = to_thc63(bridge);
 
-	return drm_bridge_attach(encoder, thc63->next, bridge, flags);
+	return drm_bridge_attach(encoder, thc63->bridge.next_bridge, bridge, flags);
 }
 
 static enum drm_mode_status thc63_mode_valid(struct drm_bridge *bridge,
@@ -132,9 +131,9 @@ static int thc63_parse_dt(struct thc63_dev *thc63)
 		return -ENODEV;
 	}
 
-	thc63->next = of_drm_find_bridge(remote);
+	thc63->bridge.next_bridge = of_drm_find_and_get_bridge(remote);
 	of_node_put(remote);
-	if (!thc63->next)
+	if (!thc63->bridge.next_bridge)
 		return -EPROBE_DEFER;
 
 	endpoint = of_graph_get_endpoint_by_regs(thc63->dev->of_node,

-- 
2.52.0