[PATCH] drm/panel: Fix node reference leak in rpi_touchscreen_probe()
From: Wentao Liang <hidden>
Date: 2026-09-16 18:06:31
Also in:
dri-devel, lkml, stable
Subsystem:
drm drivers, drm drivers and misc gpu patches, drm panel drivers, the rest · Maintainers:
David Airlie, Simona Vetter, Maarten Lankhorst, Maxime Ripard, Thomas Zimmermann, Neil Armstrong, Linus Torvalds
of_graph_get_remote_port() returns a reference to the remote port
node. On the success path that reference is passed to the registered
DSI device and released with it, but if mipi_dsi_device_register_full()
fails the reference is never dropped. Release it on the error path.
Fixes: 2f733d6194bd ("drm/panel: Add support for the Raspberry Pi 7" Touchscreen.")
Cc: stable@vger.kernel.org
Signed-off-by: Wentao Liang <redacted>
---
drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c b/drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c
index dc4bb8ad9131..c14776561623 100644
--- a/drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c
+++ b/drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c@@ -428,6 +428,7 @@ static int rpi_touchscreen_probe(struct i2c_client *i2c) if (IS_ERR(ts->dsi)) { dev_err(dev, "DSI device registration failed: %ld\n", PTR_ERR(ts->dsi)); + of_node_put(info.node); return PTR_ERR(ts->dsi); }
--
2.34.1