linux-kernel - [PATCH v2 06/12] drm/bridge: tpd12s015: convert to of_drm_find_and_get

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Message-Id: <20260109-drm-bridge-alloc-getput-drm_of_find_bridge-2-v2-6-8bad3ef90b9f@bootlin.com>
Date: Fri, 09 Jan 2026 08:31:37 +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 v2 06/12] drm/bridge: tpd12s015: 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.

Acked-by: Maxime Ripard <mripard@...nel.org>
Signed-off-by: Luca Ceresoli <luca.ceresoli@...tlin.com>
---
 drivers/gpu/drm/bridge/ti-tpd12s015.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/bridge/ti-tpd12s015.c b/drivers/gpu/drm/bridge/ti-tpd12s015.c
index dcf686c4e73d..136e47ad1a10 100644
--- a/drivers/gpu/drm/bridge/ti-tpd12s015.c
+++ b/drivers/gpu/drm/bridge/ti-tpd12s015.c
@@ -28,8 +28,6 @@ struct tpd12s015_device {
 	struct gpio_desc *ls_oe_gpio;
 	struct gpio_desc *hpd_gpio;
 	int hpd_irq;
-
-	struct drm_bridge *next_bridge;
 };
 
 static inline struct tpd12s015_device *to_tpd12s015(struct drm_bridge *bridge)
@@ -47,7 +45,7 @@ static int tpd12s015_attach(struct drm_bridge *bridge,
 	if (!(flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR))
 		return -EINVAL;
 
-	ret = drm_bridge_attach(encoder, tpd->next_bridge,
+	ret = drm_bridge_attach(encoder, tpd->bridge.next_bridge,
 				bridge, flags);
 	if (ret < 0)
 		return ret;
@@ -138,10 +136,10 @@ static int tpd12s015_probe(struct platform_device *pdev)
 	if (!node)
 		return -ENODEV;
 
-	tpd->next_bridge = of_drm_find_bridge(node);
+	tpd->bridge.next_bridge = of_drm_find_and_get_bridge(node);
 	of_node_put(node);
 
-	if (!tpd->next_bridge)
+	if (!tpd->bridge.next_bridge)
 		return -EPROBE_DEFER;
 
 	/* Get the control and HPD GPIOs. */

-- 
2.52.0