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From: Luca Ceresoli <luca.ceresoli@bootlin.com>
To: Andrzej Hajda <andrzej.hajda@intel.com>,
	 Neil Armstrong <neil.armstrong@linaro.org>,
	Robert Foss <rfoss@kernel.org>,
	 Laurent Pinchart <Laurent.pinchart@ideasonboard.com>,
	 Jonas Karlman <jonas@kwiboo.se>,
	Jernej Skrabec <jernej.skrabec@gmail.com>,
	 Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
	 Maxime Ripard <mripard@kernel.org>,
	Thomas Zimmermann <tzimmermann@suse.de>,
	 David Airlie <airlied@gmail.com>,
	Simona Vetter <simona@ffwll.ch>,
	 Jonathan Corbet <corbet@lwn.net>,
	Alexey Brodkin <abrodkin@synopsys.com>,
	 Phong LE <ple@baylibre.com>, Liu Ying <victor.liu@nxp.com>,
	 Shawn Guo <shawnguo@kernel.org>,
	Sascha Hauer <s.hauer@pengutronix.de>,
	 Pengutronix Kernel Team <kernel@pengutronix.de>,
	 Fabio Estevam <festevam@gmail.com>,
	 Adrien Grassein <adrien.grassein@gmail.com>,
	 Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>,
	 Tomi Valkeinen <tomi.valkeinen+renesas@ideasonboard.com>,
	 Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>,
	 Geert Uytterhoeven <geert+renesas@glider.be>,
	 Magnus Damm <magnus.damm@gmail.com>,
	Kevin Hilman <khilman@baylibre.com>,
	 Jerome Brunet <jbrunet@baylibre.com>,
	 Martin Blumenstingl <martin.blumenstingl@googlemail.com>,
	 Chun-Kuang Hu <chunkuang.hu@kernel.org>,
	 Philipp Zabel <p.zabel@pengutronix.de>,
	 Matthias Brugger <matthias.bgg@gmail.com>,
	 AngeloGioacchino Del Regno
	<angelogioacchino.delregno@collabora.com>,
	 Anitha Chrisanthus <anitha.chrisanthus@intel.com>,
	 Edmund Dea <edmund.j.dea@intel.com>,
	Inki Dae <inki.dae@samsung.com>,
	 Seung-Woo Kim <sw0312.kim@samsung.com>,
	 Kyungmin Park <kyungmin.park@samsung.com>,
	 Krzysztof Kozlowski <krzk@kernel.org>,
	 Alim Akhtar <alim.akhtar@samsung.com>
Cc: Hui Pu <Hui.Pu@gehealthcare.com>,
	 Thomas Petazzoni <thomas.petazzoni@bootlin.com>,
	 dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org,
	 linux-doc@vger.kernel.org, imx@lists.linux.dev,
	 linux-arm-kernel@lists.infradead.org,
	linux-renesas-soc@vger.kernel.org,
	 linux-amlogic@lists.infradead.org,
	linux-mediatek@lists.infradead.org,
	 linux-samsung-soc@vger.kernel.org,
	 Luca Ceresoli <luca.ceresoli@bootlin.com>
Subject: [PATCH 04/26] drm/bridge: make of_drm_find_bridge() a wrapper of drm_of_find_bridge()
Date: Wed, 19 Nov 2025 14:05:35 +0100	[thread overview]
Message-ID: <20251119-drm-bridge-alloc-getput-drm_of_find_bridge-v1-4-0db98a7fe474@bootlin.com> (raw)
In-Reply-To: <20251119-drm-bridge-alloc-getput-drm_of_find_bridge-v1-0-0db98a7fe474@bootlin.com>

of_drm_find_bridge() is identical to drm_of_find_bridge() except it does
not increment the refcount. Rewrite it as a wrapper and put the bridge
being returned so the behaviour is still the same.

Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
---
 drivers/gpu/drm/drm_bridge.c | 14 +++-----------
 1 file changed, 3 insertions(+), 11 deletions(-)

diff --git a/drivers/gpu/drm/drm_bridge.c b/drivers/gpu/drm/drm_bridge.c
index 6debbf20aaa8..09ad825f9cb8 100644
--- a/drivers/gpu/drm/drm_bridge.c
+++ b/drivers/gpu/drm/drm_bridge.c
@@ -1460,19 +1460,11 @@ EXPORT_SYMBOL(drm_of_find_bridge);
  */
 struct drm_bridge *of_drm_find_bridge(struct device_node *np)
 {
-	struct drm_bridge *bridge;
-
-	mutex_lock(&bridge_lock);
+	struct drm_bridge *bridge = drm_of_find_bridge(np);
 
-	list_for_each_entry(bridge, &bridge_list, list) {
-		if (bridge->of_node == np) {
-			mutex_unlock(&bridge_lock);
-			return bridge;
-		}
-	}
+	drm_bridge_put(bridge);
 
-	mutex_unlock(&bridge_lock);
-	return NULL;
+	return bridge;
 }
 EXPORT_SYMBOL(of_drm_find_bridge);
 #endif

-- 
2.51.1



  parent reply	other threads:[~2025-11-19 13:06 UTC|newest]

Thread overview: 39+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-11-19 13:05 [PATCH 00/26] drm/bridge: add drm_of_find_bridge(), deprecate of_drm_find_bridge() Luca Ceresoli
2025-11-19 13:05 ` [PATCH 01/26] drm/bridge: add drm_of_find_bridge() Luca Ceresoli
2025-11-19 14:22   ` Louis Chauvet
2025-11-19 14:29     ` Luca Ceresoli
2025-11-24 10:15   ` Maxime Ripard
2025-11-19 13:05 ` [PATCH 02/26] drm/bridge: deprecate of_drm_find_bridge() Luca Ceresoli
2025-11-19 14:28   ` Louis Chauvet
2025-11-19 15:13     ` Luca Ceresoli
2025-11-24 10:18     ` Maxime Ripard
2025-11-19 13:05 ` [PATCH 03/26] drm/todo: add entry about converting to drm_of_find_bridge() Luca Ceresoli
2025-11-24 10:21   ` Maxime Ripard
2025-11-19 13:05 ` Luca Ceresoli [this message]
2025-11-24 10:22   ` [PATCH 04/26] drm/bridge: make of_drm_find_bridge() a wrapper of drm_of_find_bridge() Maxime Ripard
2025-11-19 13:05 ` [PATCH 05/26] drm/arcpgu: convert to drm_of_find_bridge() Luca Ceresoli
2025-11-19 13:05 ` [PATCH 06/26] drm/bridge: add devm_drm_of_find_bridge Luca Ceresoli
2025-11-19 14:33   ` Louis Chauvet
2025-11-19 15:05     ` Luca Ceresoli
2025-11-24 10:39   ` Maxime Ripard
2025-11-19 13:05 ` [PATCH 07/26] drm/bridge: ite-it66121: use devm_drm_of_find_bridge() to put the next bridge Luca Ceresoli
2025-11-19 14:36   ` Louis Chauvet
2025-11-19 13:05 ` [PATCH 08/26] drm/bridge: imx8qxp-pixel-combiner: " Luca Ceresoli
2025-11-19 13:05 ` [PATCH 09/26] drm/bridge: simple-bridge: " Luca Ceresoli
2025-11-19 13:05 ` [PATCH 10/26] drm/bridge: tpd12s015: " Luca Ceresoli
2025-11-19 13:05 ` [PATCH 11/26] drm/bridge: thc63lvd1024: " Luca Ceresoli
2025-11-19 13:05 ` [PATCH 12/26] drm/bridge: imx8qxp-pxl2dpi: use devm_drm_of_find_bridge() to put the next and companion bridges Luca Ceresoli
2025-11-19 13:05 ` [PATCH 13/26] drm/bridge: lt8912b: use devm_drm_of_find_bridge() to put the hdmi bridge Luca Ceresoli
2025-11-19 13:05 ` [PATCH 14/26] drm/bridge: tfp410: use devm_drm_of_find_bridge() to put the next bridge Luca Ceresoli
2025-11-19 13:05 ` [PATCH 15/26] drm/bridge: imx8qxp-ldb: use devm_drm_of_find_bridge() to put the companion bridge Luca Ceresoli
2025-11-19 13:05 ` [PATCH 16/26] drm/rcar-du: lvds: use devm_drm_of_find_bridge() to put the next bridge Luca Ceresoli
2025-11-19 13:05 ` [PATCH 17/26] drm/meson: encoder_*: " Luca Ceresoli
2025-11-19 13:05 ` [PATCH 18/26] drm/bridge: sii902x: " Luca Ceresoli
2025-11-19 13:05 ` [PATCH 19/26] drm/mediatek: " Luca Ceresoli
2025-11-19 13:05 ` [PATCH 20/26] drm/kmb: dsi: " Luca Ceresoli
2025-11-19 13:05 ` [PATCH 21/26] drm/imx/ipuv3: " Luca Ceresoli
2025-11-19 13:05 ` [PATCH 22/26] drm/exynos: hdmi: " Luca Ceresoli
2025-11-19 13:05 ` [PATCH 23/26] drm/bridge: dw-hdmi: " Luca Ceresoli
2025-11-19 13:05 ` [PATCH 24/26] drm/bridge: imx8qxp-pixel-link: simplify logic to find " Luca Ceresoli
2025-11-19 13:05 ` [PATCH 25/26] drm/bridge: imx8qxp-pixel-link: simplify freeing of the remote device_node Luca Ceresoli
2025-11-19 13:05 ` [PATCH 26/26] drm/bridge: imx8qxp-pixel-link: convert to drm_of_find_bridge() Luca Ceresoli

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