linux-kernel - [PATCH] drm/meson: Fix reference count leak in meson_encoder_dsi

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Message-Id: <20251027084258.79180-1-linmq006@gmail.com>
Date: Mon, 27 Oct 2025 16:42:58 +0800
From: Miaoqian Lin <linmq006@...il.com>
To: Neil Armstrong <neil.armstrong@...aro.org>,
	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>,
	Kevin Hilman <khilman@...libre.com>,
	Jerome Brunet <jbrunet@...libre.com>,
	Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
	Nicolas Belin <nbelin@...libre.com>,
	Jagan Teki <jagan@...rulasolutions.com>,
	dri-devel@...ts.freedesktop.org,
	linux-amlogic@...ts.infradead.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Cc: linmq006@...il.com,
	stable@...r.kernel.org
Subject: [PATCH] drm/meson: Fix reference count leak in meson_encoder_dsi_probe

The of_graph_get_remote_node() function returns a device node with its
reference count incremented. The caller is responsible for calling
of_node_put() to release this reference when done.

Fixes: 42dcf15f901c ("drm/meson: add DSI encoder")
Cc: stable@...r.kernel.org
Signed-off-by: Miaoqian Lin <linmq006@...il.com>
---
 drivers/gpu/drm/meson/meson_encoder_dsi.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/meson/meson_encoder_dsi.c b/drivers/gpu/drm/meson/meson_encoder_dsi.c
index 6c6624f9ba24..01edf46e30d0 100644
--- a/drivers/gpu/drm/meson/meson_encoder_dsi.c
+++ b/drivers/gpu/drm/meson/meson_encoder_dsi.c
@@ -121,6 +121,7 @@ int meson_encoder_dsi_probe(struct meson_drm *priv)
 	}
 
 	meson_encoder_dsi->next_bridge = of_drm_find_bridge(remote);
+	of_node_put(remote);
 	if (!meson_encoder_dsi->next_bridge)
 		return dev_err_probe(priv->dev, -EPROBE_DEFER,
 				     "Failed to find DSI transceiver bridge\n");
-- 
2.39.5 (Apple Git-154)