This is a note to let you know that I've just added the patch titled
software node: Let args be NULL in software_node_get_reference_args
to the 5.4-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:
software-node-let-args-be-null-in-software_node_get_.patch
and it can be found in the queue-5.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 6d2c75d5db1a5d08ccddb94db56b4cdeff70dfe2
Author: Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxx>
Date: Thu Nov 9 12:10:09 2023 +0200
software node: Let args be NULL in software_node_get_reference_args
[ Upstream commit 1eaea4b3604eb9ca7d9a1e73d88fc121bb4061f5 ]
fwnode_get_property_reference_args() may not be called with args argument
NULL and while OF already supports this. Add the missing NULL check.
The purpose is to be able to count the references.
Fixes: b06184acf751 ("software node: Add software_node_get_reference_args()")
Signed-off-by: Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxx>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Reviewed-by: Heikki Krogerus <heikki.krogerus@xxxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20231109101010.1329587-3-sakari.ailus@xxxxxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/base/swnode.c b/drivers/base/swnode.c
index 4c3b9813b284..636d52d1a1b8 100644
--- a/drivers/base/swnode.c
+++ b/drivers/base/swnode.c
@@ -604,6 +604,9 @@ software_node_get_reference_args(const struct fwnode_handle *fwnode,
if (nargs > NR_FWNODE_REFERENCE_ARGS)
return -EINVAL;
+ if (!args)
+ return 0;
+
args->fwnode = software_node_get(refnode);
args->nargs = nargs;
