[PATCH] ACPI: configfs: Add the missing config_item_put() to fix refcount leak

[Hanjun Guo <guohanjun@xxxxxxxxxx>]

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

diff --git a/drivers/acpi/acpi_configfs.c b/drivers/acpi/acpi_configfs.c
index 88c8af4..cf91f49 100644
--- 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 = {
-- 
1.7.12.4