From d58ef256781398ad115aef44de0a02ad27ea6c3a Mon Sep 17 00:00:00 2001 From: Liang He Date: Tue, 26 Jul 2022 09:07:22 +0800 Subject: [PATCH] drm/meson: Fix refcount bugs in meson_vpu_has_available_connectors() [ Upstream commit 91b3c8dbe898df158fd2a84675f3a284ff6666f7 ] In this function, there are two refcount leak bugs: (1) when breaking out of for_each_endpoint_of_node(), we need call the of_node_put() for the 'ep'; (2) we should call of_node_put() for the reference returned by of_graph_get_remote_port() when it is not used anymore. Fixes: bbbe775ec5b5 ("drm: Add support for Amlogic Meson Graphic Controller") Signed-off-by: Liang He Acked-by: Martin Blumenstingl Acked-by: Neil Armstrong Signed-off-by: Neil Armstrong Link: https://patchwork.freedesktop.org/patch/msgid/20220726010722.1319416-1-windhl@126.com Signed-off-by: Sasha Levin --- drivers/gpu/drm/meson/meson_drv.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/meson/meson_drv.c b/drivers/gpu/drm/meson/meson_drv.c index 61a6536e7e61..9a39afc3939b 100644 --- a/drivers/gpu/drm/meson/meson_drv.c +++ b/drivers/gpu/drm/meson/meson_drv.c @@ -124,8 +124,11 @@ static bool meson_vpu_has_available_connectors(struct device *dev) for_each_endpoint_of_node(dev->of_node, ep) { /* If the endpoint node exists, consider it enabled */ remote = of_graph_get_remote_port(ep); - if (remote) + if (remote) { + of_node_put(remote); + of_node_put(ep); return true; + } } return false;