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The NULL pointer would be set to pointer p2d and then NULL pointer p2d would be dereferenced. Fix this by returning early from imx8qxp_pxl2dpi_bridge_destroy() if !p2d is true. Fixes: 900699ba830f ("drm/bridge: imx8qxp-pxl2dpi: get/put the companion br= idge") Signed-off-by: Liu Ying Reviewed-by: Frank Li Reviewed-by: Luca Ceresoli --- drivers/gpu/drm/bridge/imx/imx8qxp-pxl2dpi.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/bridge/imx/imx8qxp-pxl2dpi.c b/drivers/gpu/drm= /bridge/imx/imx8qxp-pxl2dpi.c index f0814702b641..9dc2b3d2ecef 100644 --- a/drivers/gpu/drm/bridge/imx/imx8qxp-pxl2dpi.c +++ b/drivers/gpu/drm/bridge/imx/imx8qxp-pxl2dpi.c @@ -67,6 +67,9 @@ static void imx8qxp_pxl2dpi_bridge_destroy(struct drm_bri= dge *bridge) { struct imx8qxp_pxl2dpi *p2d =3D bridge->driver_private; =20 + if (!p2d) + return; + drm_bridge_put(p2d->companion); } =20 --=20 2.43.0