From: Hanjun Guo <guohanjun@huawei.com>
Date: Fri, 18 Sep 2020 09:13:28 +0000 (+0800)
Subject: ACPI: configfs: Add missing config_item_put() to fix refcount leak
X-Git-Tag: v5.10-rc1~149^2~3^4
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=9a2e849fb6de471b82d19989a7944d3b7671793c;p=thirdparty%2Fkernel%2Flinux.git

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

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>
---

diff --git a/drivers/acpi/acpi_configfs.c b/drivers/acpi/acpi_configfs.c
index 88c8af455ea3f..cf91f49101eac 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 = {