[PATCH 5.9 203/391] ACPI: configfs: Add missing config_item_put() to fix refcount leak

[Greg Kroah-Hartman]

From: Hanjun Guo <guohanjun@xxxxxxxxxx>

commit 9a2e849fb6de471b82d19989a7944d3b7671793c upstream.

config_item_put() should be called in the drop_item callback, to
decrement refcount for the config item.

Fixes: 772bf1e2878ec ("ACPI: configfs: Unload SSDT on configfs entry removal")
Signed-off-by: Hanjun Guo <guohanjun@xxxxxxxxxx>
[ rjw: Subject edit ]
Cc: 4.13+ <stable@xxxxxxxxxxxxxxx> # 4.13+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 drivers/acpi/acpi_configfs.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/acpi/acpi_configfs.c
+++ b/drivers/acpi/acpi_configfs.c
@@ -228,6 +228,7 @@ static void acpi_table_drop_item(struct
 
 	ACPI_INFO(("Host-directed Dynamic ACPI Table Unload"));
 	acpi_unload_table(table->index);
+	config_item_put(cfg);
 }
 
 static struct configfs_group_operations acpi_table_group_ops = {