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software node: Let args be NULL in software_node_get_reference_args
[ Upstream commit1eaea4b360
] 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:b06184acf7
("software node: Add software_node_get_reference_args()") Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Link: https://lore.kernel.org/r/20231109101010.1329587-3-sakari.ailus@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
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1 changed files with 3 additions and 0 deletions
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@ -541,6 +541,9 @@ software_node_get_reference_args(const struct fwnode_handle *fwnode,
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if (nargs > NR_FWNODE_REFERENCE_ARGS)
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return -EINVAL;
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if (!args)
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return 0;
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args->fwnode = software_node_get(refnode);
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args->nargs = nargs;
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