ACPI: configfs: Add missing config_item_put() to fix refcount leak

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@huawei.com>
[ rjw: Subject edit ]
Cc: 4.13+ <stable@vger.kernel.org> # 4.13+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/acpi/acpi_configfs.c b/drivers/acpi/acpi_configfs.c
index 88c8af455ea3f2fb92eb4ad7f5b856ec2efe817c..cf91f49101eac8d64ae16f47500cd177758baed9 100644 (file)
--- a/drivers/acpi/acpi_configfs.c
+++ b/drivers/acpi/acpi_configfs.c
@@ -228,6 +228,7 @@ static void acpi_table_drop_item(struct config_group *group,
 
        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 = {