This is a note to let you know that I've just added the patch titled
of: property: decrement node refcount in of_fwnode_get_reference_args()
to the 4.19-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
of-property-decrement-node-refcount-in-of_fwnode_get.patch
and it can be found in the queue-4.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 3fcfc04b30201a937cec535bc89c1dc8622ca264
Author: Yang Yingliang <yangyingliang@xxxxxxxxxx>
Date: Mon Nov 21 10:32:09 2022 +0800
of: property: decrement node refcount in of_fwnode_get_reference_args()
[ 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@xxxxxxxxxx>
Reviewed-by: Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxx>
Reviewed-by: Frank Rowand <frowand.list@xxxxxxxxx>
Link: https://lore.kernel.org/r/20221121023209.3909759-1-yangyingliang@xxxxxxxxxx
Signed-off-by: Rob Herring <robh@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/of/property.c b/drivers/of/property.c
index 43720c2de138..13c7e55f5cba 100644
--- a/drivers/of/property.c
+++ b/drivers/of/property.c
@@ -918,8 +918,10 @@ 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);
