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of: Fix a refcounting bug in __of_attach_node_sysfs() 

[ Upstream commit 8a325dd06f ]

The problem in this code is that if kobject_add() fails, then it should
call of_node_put(np) to drop the reference count.  I've actually moved
the of_node_get(np) later in the function to avoid needing to do clean
up.

Fixes: 5b2c2f5a0e ("of: overlay: add missing of_node_get() in __of_attach_node_sysfs")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5.4-rM2-2.2.x-imx-squashed
Dan Carpenter 2020-05-20 15:04:14 +03:00 committed by Greg Kroah-Hartman
parent f9db526da5
commit cde05d643e
1 changed files with 1 additions and 2 deletions
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3
drivers/of/kobj.c
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@ -134,8 +134,6 @@ int __of_attach_node_sysfs(struct device_node *np)
if (!name)
return -ENOMEM;
of_node_get(np);
rc = kobject_add(&np->kobj, parent, "%s", name);
kfree(name);
if (rc)
@ -144,6 +142,7 @@ int __of_attach_node_sysfs(struct device_node *np)
for_each_property_of_node(np, pp)
__of_add_property_sysfs(np, pp);
of_node_get(np);
return 0;
}