[PATCH] ACPI: property: Fix fwnode refcount leak in acpi_fwnode_graph_parse_endpoint()

[Haotian Zhang <vulab@iscas.ac.cn>]

acpi_fwnode_graph_parse_endpoint() calls fwnode_get_parent() to obtain the
parent fwnode but returns without calling fwnode_handle_put() on it. This
leads to a fwnode refcount leak and prevents the parent node from being
released properly.

Call fwnode_handle_put() on the parent fwnode before returning to
fix the leak.

Fixes: 3b27d00e7b6d ("device property: Move fwnode graph ops to firmware specific locations")
Signed-off-by: Haotian Zhang <vulab@iscas.ac.cn>
---
 drivers/acpi/property.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/acpi/property.c b/drivers/acpi/property.c
index 1b997a5497e7..7f8790e8dc4e 100644
--- a/drivers/acpi/property.c
+++ b/drivers/acpi/property.c
@@ -1714,6 +1714,7 @@ static int acpi_fwnode_graph_parse_endpoint(const struct fwnode_handle *fwnode,
 	if (fwnode_property_read_u32(fwnode, "reg", &endpoint->id))
 		fwnode_property_read_u32(fwnode, "endpoint", &endpoint->id);
 
+	fwnode_handle_put(port_fwnode);
 	return 0;
 }
 
-- 
2.25.1