* [PATCH] drm/rockchip: dsi: Fix second reference leak in dw_mipi_dsi_rockchip_host_detach()
@ 2026-09-16 18:14 Wentao Liang
0 siblings, 0 replies; only message in thread
From: Wentao Liang @ 2026-09-16 18:14 UTC (permalink / raw)
To: airlied
Cc: andrzej.hajda, andy.yan, dri-devel, heiko, hjc, linux-arm-kernel,
linux-kernel, linux-rockchip, maarten.lankhorst, mripard, simona,
tzimmermann, Wentao Liang, stable
The reference to the dual-DSI partner device obtained through
dw_mipi_dsi_rockchip_find_second() is never released after removing
the partner component. Drop it once component_del() is done.
Fixes: cf6d100dd238 ("drm/rockchip: dsi: add dual mipi support")
Cc: stable@vger.kernel.org
Signed-off-by: Wentao Liang <vulab@iscas.ac.cn>
---
drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c b/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c
index 2c1f1c53ddda..7f2d3cd28694 100644
--- a/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c
+++ b/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c
@@ -1101,8 +1101,10 @@ static int dw_mipi_dsi_rockchip_host_detach(void *priv_data,
struct device *second;
second = dw_mipi_dsi_rockchip_find_second(dsi);
- if (second && !IS_ERR(second))
+ if (second && !IS_ERR(second)) {
component_del(second, &dw_mipi_dsi_rockchip_ops);
+ put_device(second);
+ }
component_del(dsi->dev, &dw_mipi_dsi_rockchip_ops);
--
2.34.1
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2026-09-16 18:14 [PATCH] drm/rockchip: dsi: Fix second reference leak in dw_mipi_dsi_rockchip_host_detach() Wentao Liang
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