[PATCH] ARM: OMAP2+: Fix refcount leak in omapdss_init_of

From: Miaoqian Lin
Date: Wed Jun 01 2022 - 00:49:13 EST


omapdss_find_dss_of_node() calls of_find_compatible_node() to get device
node. of_find_compatible_node() returns a node pointer with refcount
incremented, we should use of_node_put() on it when done.
Add missing of_node_put() in later error path and normal path.

Fixes: e0c827aca0730 ("drm/omap: Populate DSS children in omapdss driver")
Signed-off-by: Miaoqian Lin <linmq006@xxxxxxxxx>
---
arch/arm/mach-omap2/display.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/arch/arm/mach-omap2/display.c b/arch/arm/mach-omap2/display.c
index 21413a9b7b6c..ed2cb2649cf6 100644
--- a/arch/arm/mach-omap2/display.c
+++ b/arch/arm/mach-omap2/display.c
@@ -259,11 +259,13 @@ static int __init omapdss_init_of(void)

if (!pdev) {
pr_err("Unable to find DSS platform device\n");
+ of_node_put(node);
return -ENODEV;
}

r = of_platform_populate(node, NULL, NULL, &pdev->dev);
put_device(&pdev->dev);
+ of_node_put(node);
if (r) {
pr_err("Unable to populate DSS submodule devices\n");
return r;
--
2.25.1