From: Yang Yingliang yangyingliang@huawei.com
[ Upstream commit 60d865bd5a9b15a3961eb1c08bd4155682a3c81e ]
In of_fwnode_get_reference_args(), the refcount of of_args.np has been incremented in the case of successful return from of_parse_phandle_with_args() or of_parse_phandle_with_fixed_args().
Decrement the refcount if of_args is not returned to the caller of of_fwnode_get_reference_args().
Fixes: 3e3119d3088f ("device property: Introduce fwnode_property_get_reference_args") Signed-off-by: Yang Yingliang yangyingliang@huawei.com Reviewed-by: Sakari Ailus sakari.ailus@linux.intel.com Reviewed-by: Frank Rowand frowand.list@gmail.com Link: https://lore.kernel.org/r/20221121023209.3909759-1-yangyingliang@huawei.com Signed-off-by: Rob Herring robh@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/of/property.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/of/property.c b/drivers/of/property.c index 1d7d24e7094b..8f998351bf4f 100644 --- a/drivers/of/property.c +++ b/drivers/of/property.c @@ -956,8 +956,10 @@ of_fwnode_get_reference_args(const struct fwnode_handle *fwnode, nargs, index, &of_args); if (ret < 0) return ret; - if (!args) + if (!args) { + of_node_put(of_args.np); return 0; + }
args->nargs = of_args.args_count; args->fwnode = of_fwnode_handle(of_args.np);