[PATCH 6.18 575/752] drm: of: drm_of_panel_bridge_remove(): fix device_node leak

Sasha Levin
2026-02-28T17:56:26Z

From: Luca Ceresoli <luca.ceresoli@bootlin.com>

[ Upstream commit a4b4385d0523e39a7c058cb5a6c8269e513126ca ]

drm_of_panel_bridge_remove() uses of_graph_get_remote_node() to get a
device_node but does not put the node reference.

Fixes: c70087e8f16f ("drm/drm_of: add drm_of_panel_bridge_remove function")
Cc: stable@vger.kernel.org # v4.15
Acked-by: Maxime Ripard <mripard@kernel.org>
Link: https://patch.msgid.link/20260109-drm-bridge-alloc-getput-drm_of_find_bridge-2-v2-1-8bad3ef90b9f@bootlin.com
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
include/drm/drm_of.h | 3 +++
1 file changed, 3 insertions(+)

diff --git a/include/drm/drm_of.h b/include/drm/drm_of.h
index 7f0256dae3f13..f3e55ea2174c0 100644
--- a/include/drm/drm_of.h
+++ b/include/drm/drm_of.h
@@ -5,6 +5,7 @@
#include <linux/err.h>
#include <linux/of_graph.h>
#if IS_ENABLED(CONFIG_OF) && IS_ENABLED(CONFIG_DRM_PANEL_BRIDGE)
+#include <linux/of.h>
#include <drm/drm_bridge.h>
#endif

@@ -173,6 +174,8 @@ static inline int drm_of_panel_bridge_remove(const struct device_node *np,
bridge = of_drm_find_bridge(remote);
drm_panel_bridge_remove(bridge);

+ of_node_put(remote);
+
return 0;
#else
return -EINVAL;
--
2.51.0